ENH: Added new ceeateZeroDirectory utility

Uses a system/caseProperties file to select templates from
etc/caseDicts/createZeroDirectoryTemplates to enable high-level setup
of a case.
See
- etc/caseDicts/createZeroDirectoryTemplates
- tutorials/preProcessing/createZeroDirectory

tutorials/preProcessing/createZeroDirectory/cavity/Allclean

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# Source tutorial clean functions
+. $WM_PROJECT_DIR/bin/tools/CleanFunctions
+
+rm -rf 0 > /dev/null 2>&1
+
+cleanCase

tutorials/preProcessing/createZeroDirectory/cavity/Allrun

@@ -0,0 +1,9 @@
+#!/bin/sh
+# Source tutorial run functions
+. $WM_PROJECT_DIR/bin/tools/RunFunctions
+
+runApplication blockMesh
+
+runApplication createZeroDirectory
+
+runApplication $(getApplication)

tutorials/preProcessing/createZeroDirectory/cavity/constant/transportProperties

@@ -0,0 +1,21 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      transportProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+nu              nu [ 0 2 -1 0 0 0 0 ] 0.01;
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/cavity/system/blockMeshDict

@@ -0,0 +1,75 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      blockMeshDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+convertToMeters 0.1;
+
+vertices
+(
+    (0 0 0)
+    (1 0 0)
+    (1 1 0)
+    (0 1 0)
+    (0 0 0.1)
+    (1 0 0.1)
+    (1 1 0.1)
+    (0 1 0.1)
+);
+
+blocks
+(
+    hex (0 1 2 3 4 5 6 7) (20 20 1) simpleGrading (1 1 1)
+);
+
+edges
+(
+);
+
+boundary
+(
+    movingWall
+    {
+        type wall;
+        faces
+        (
+            (3 7 6 2)
+        );
+    }
+    fixedWalls
+    {
+        type wall;
+        faces
+        (
+            (0 4 7 3)
+            (2 6 5 1)
+            (1 5 4 0)
+        );
+    }
+    frontAndBack
+    {
+        type empty;
+        faces
+        (
+            (0 3 2 1)
+            (4 5 6 7)
+        );
+    }
+);
+
+mergePatchPairs
+(
+);
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/cavity/system/caseProperties

@@ -0,0 +1,56 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.0                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      caseProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+initialConditions
+{
+    U           uniform (0 0 0);
+    p           uniform 0;
+}
+
+boundaryConditions
+{
+    topWall
+    {
+        category        wall;
+        patches         (movingWall);
+        type            noSlip;
+        options
+        {
+            wallFunction    highReynolds;
+            motion          moving;
+        };
+        values
+        {
+            U           uniform (1 0 0);
+        }
+    }
+
+    walls
+    {
+        category        wall;
+        patches         (fixedWalls);
+        type            noSlip;
+        options
+        {
+            wallFunction    highReynolds;
+            motion          stationary;
+        };
+    }
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/cavity/system/controlDict

@@ -0,0 +1,50 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      controlDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+application     icoFoam;
+
+startFrom       startTime;
+
+startTime       0;
+
+stopAt          endTime;
+
+//endTime         0.5;
+endTime         0.005;
+
+deltaT          0.005;
+
+writeControl    timeStep;
+
+writeInterval   20;
+
+purgeWrite      0;
+
+writeFormat     ascii;
+
+writePrecision  6;
+
+writeCompression off;
+
+timeFormat      general;
+
+timePrecision   6;
+
+runTimeModifiable true;
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/cavity/system/fvSchemes

@@ -0,0 +1,60 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+ddtSchemes
+{
+    default         Euler;
+}
+
+gradSchemes
+{
+    default         Gauss linear;
+    grad(p)         Gauss linear;
+}
+
+divSchemes
+{
+    default         none;
+    div(phi,U)      Gauss linear;
+}
+
+laplacianSchemes
+{
+    default         none;
+    laplacian(nu,U) Gauss linear orthogonal;
+    laplacian((1|A(U)),p) Gauss linear orthogonal;
+}
+
+interpolationSchemes
+{
+    default         linear;
+    interpolate(HbyA) linear;
+}
+
+snGradSchemes
+{
+    default         orthogonal;
+}
+
+fluxRequired
+{
+    default         no;
+    p               ;
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/cavity/system/fvSolution

@@ -0,0 +1,46 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+solvers
+{
+    p
+    {
+        solver          PCG;
+        preconditioner  DIC;
+        tolerance       1e-06;
+        relTol          0;
+    }
+
+    U
+    {
+        solver          PBiCG;
+        preconditioner  DILU;
+        tolerance       1e-05;
+        relTol          0;
+    }
+}
+
+PISO
+{
+    nCorrectors     2;
+    nNonOrthogonalCorrectors 0;
+    pRefCell        0;
+    pRefValue       0;
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/motorBike/Allclean

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Source tutorial clean functions
+. $WM_PROJECT_DIR/bin/tools/CleanFunctions
+
+# remove surface and features
+\rm -f constant/triSurface/motorBike.obj.gz > /dev/null 2>&1
+\rm -rf constant/extendedFeatureEdgeMesh > /dev/null 2>&1
+\rm -f constant/triSurface/motorBike.eMesh > /dev/null 2>&1
+
+rm -rf 0 > /dev/null 2>&1
+
+cleanCase

tutorials/preProcessing/createZeroDirectory/motorBike/Allrun

@@ -0,0 +1,25 @@
+#!/bin/sh
+cd ${0%/*} || exit 1    # run from this directory
+
+# Source tutorial run functions
+. $WM_PROJECT_DIR/bin/tools/RunFunctions
+
+# copy motorbike surface from resources folder
+cp $FOAM_TUTORIALS/resources/geometry/motorBike.obj.gz constant/triSurface/
+runApplication surfaceFeatureExtract
+
+runApplication blockMesh
+
+runApplication decomposePar
+runParallel snappyHexMesh 6 -overwrite
+
+runParallel createZeroDirectory 6
+
+runParallel patchSummary 6
+runParallel potentialFoam 6 -noFunctionObjects
+runParallel $(getApplication) 6
+
+runApplication reconstructParMesh -constant
+runApplication reconstructPar -latestTime
+
+# ----------------------------------------------------------------- end-of-file

tutorials/preProcessing/createZeroDirectory/motorBike/constant/transportProperties

@@ -0,0 +1,21 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      transportProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+transportModel  Newtonian;
+
+nu              nu [0 2 -1 0 0 0 0] 1.5e-05;
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/motorBike/constant/triSurface/README

@@ -0,0 +1,4 @@
+Folder to house tri-surfaces
+
+The Allrun script copies the surface from the $FOAM_TUTORIALS/resources/geometry
+folder

tutorials/preProcessing/createZeroDirectory/motorBike/constant/turbulenceProperties

@@ -0,0 +1,28 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      turbulenceProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+simulationType RAS;
+
+RAS
+{
+    RASModel            kOmegaSST;
+
+    turbulence          on;
+
+    printCoeffs         on;
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/motorBike/system/blockMeshDict

@@ -0,0 +1,86 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      blockMeshDict;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+convertToMeters 1;
+
+vertices
+(
+    (-5 -4 0)
+    (15 -4 0)
+    (15  4 0)
+    (-5  4 0)
+    (-5 -4 8)
+    (15 -4 8)
+    (15  4 8)
+    (-5  4 8)
+);
+
+blocks
+(
+    hex (0 1 2 3 4 5 6 7) (20 8 8) simpleGrading (1 1 1)
+);
+
+edges
+(
+);
+
+boundary
+(
+    frontAndBack
+    {
+        type patch;
+        faces
+        (
+            (3 7 6 2)
+            (1 5 4 0)
+        );
+    }
+    inlet
+    {
+        type patch;
+        faces
+        (
+            (0 4 7 3)
+        );
+    }
+    outlet
+    {
+        type patch;
+        faces
+        (
+            (2 6 5 1)
+        );
+    }
+    lowerWall
+    {
+        type wall;
+        faces
+        (
+            (0 3 2 1)
+        );
+    }
+    upperWall
+    {
+        type patch;
+        faces
+        (
+            (4 5 6 7)
+        );
+    }
+);
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/motorBike/system/caseProperties

@@ -0,0 +1,115 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.0                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      caseProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+initialConditions
+{
+    U           uniform (20 0 0);
+    p           uniform 0;
+    k           uniform 0.24;
+    omega       uniform 1.78;
+    nut         uniform 0;
+}
+
+boundaryConditions
+{
+    motorbike
+    {
+        category        wall;
+        type            noSlip;
+        patches         (motorBikeGroup);
+        options
+        {
+            wallFunction    highReynolds;
+            motion          stationary;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+
+    inlet
+    {
+        category        inlet;
+        type            subSonic;
+        patches         (inlet);
+        options
+        {
+            flowSpecification fixedVelocity;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+
+    lowerWall
+    {
+        category        wall;
+        type            noSlip;
+        patches         (lowerWall);
+        options
+        {
+            wallFunction    highReynolds;
+            motion          stationary;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+
+    outlet
+    {
+        category        outlet;
+        type            subSonic;
+        patches         (outlet);
+        options
+        {
+            returnFlow      default;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+
+    upperWall
+    {
+        category        wall;
+        type            slip;
+        patches         (upperWall);
+        values
+        {
+            $:initialConditions;
+        }
+    }
+
+    frontAndBack
+    {
+        category        wall;
+        type            slip;
+        patches         (frontAndBack);
+        values
+        {
+            $:initialConditions;
+        }
+    }
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/motorBike/system/controlDict

@@ -0,0 +1,51 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      controlDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+// For patchSummary to find the boundary conditions
+libs            ("libincompressibleTurbulenceModels.so");
+
+application     simpleFoam;
+
+startFrom       startTime; // latestTime;
+
+startTime       0;
+
+stopAt          writeNow;   //endTime;
+
+endTime         500;
+
+deltaT          1;
+
+writeControl    timeStep;
+
+writeInterval   100;
+
+purgeWrite      0;
+
+writeFormat     binary;
+
+writePrecision  6;
+
+writeCompression uncompressed;
+
+timeFormat      general;
+
+timePrecision   6;
+
+runTimeModifiable true;
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/motorBike/system/decomposeParDict

@@ -0,0 +1,42 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      decomposeParDict;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+numberOfSubdomains 6;
+
+method          hierarchical;
+// method          ptscotch;
+
+simpleCoeffs
+{
+    n               (4 1 1);
+    delta           0.001;
+}
+
+hierarchicalCoeffs
+{
+    n               (3 2 1);
+    delta           0.001;
+    order           xyz;
+}
+
+manualCoeffs
+{
+    dataFile        "cellDecomposition";
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/motorBike/system/fvSchemes

@@ -0,0 +1,58 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+ddtSchemes
+{
+    default         steadyState;
+}
+
+gradSchemes
+{
+    default         Gauss linear;
+    grad(U)         cellLimited Gauss linear 1;
+}
+
+divSchemes
+{
+    default         none;
+    div(phi,U)      bounded Gauss linearUpwindV grad(U);
+    div(phi,k)      bounded Gauss upwind;
+    div(phi,omega)  bounded Gauss upwind;
+    div((nuEff*dev2(T(grad(U))))) Gauss linear;
+}
+
+laplacianSchemes
+{
+    default         Gauss linear corrected;
+}
+
+interpolationSchemes
+{
+    default         linear;
+}
+
+snGradSchemes
+{
+    default         corrected;
+}
+
+wallDist
+{
+    method meshWave;
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/motorBike/system/fvSolution

@@ -0,0 +1,92 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+solvers
+{
+    p
+    {
+        solver           GAMG;
+        tolerance        1e-7;
+        relTol           0.01;
+        smoother         GaussSeidel;
+        nPreSweeps       0;
+        nPostSweeps      2;
+        cacheAgglomeration on;
+        agglomerator     faceAreaPair;
+        nCellsInCoarsestLevel 10;
+        mergeLevels      1;
+    }
+
+    Phi
+    {
+        $p;
+    }
+
+    U
+    {
+        solver           smoothSolver;
+        smoother         GaussSeidel;
+        tolerance        1e-8;
+        relTol           0.1;
+        nSweeps          1;
+    }
+
+    k
+    {
+        solver           smoothSolver;
+        smoother         GaussSeidel;
+        tolerance        1e-8;
+        relTol           0.1;
+        nSweeps          1;
+    }
+
+    omega
+    {
+        solver           smoothSolver;
+        smoother         GaussSeidel;
+        tolerance        1e-8;
+        relTol           0.1;
+        nSweeps          1;
+    }
+}
+
+SIMPLE
+{
+    nNonOrthogonalCorrectors 0;
+    consistent yes;
+}
+
+potentialFlow
+{
+    nNonOrthogonalCorrectors 10;
+}
+
+relaxationFactors
+{
+    equations
+    {
+        U               0.9;
+        k               0.7;
+        omega           0.7;
+    }
+}
+
+cache
+{
+    grad(U);
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/motorBike/system/meshQualityDict

@@ -0,0 +1,24 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      meshQualityDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+// Include defaults parameters from master dictionary
+#includeEtc "caseDicts/meshQualityDict"
+
+//- minFaceWeight (0 -> 0.5)
+minFaceWeight 0.02;
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/motorBike/system/snappyHexMeshDict

@@ -0,0 +1,317 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      snappyHexMeshDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+// Which of the steps to run
+castellatedMesh true;
+snap            true;
+addLayers       true;
+
+
+// Geometry. Definition of all surfaces. All surfaces are of class
+// searchableSurface.
+// Surfaces are used
+// - to specify refinement for any mesh cell intersecting it
+// - to specify refinement for any mesh cell inside/outside/near
+// - to 'snap' the mesh boundary to the surface
+geometry
+{
+    motorBike.obj
+    {
+        type triSurfaceMesh;
+        name motorBike;
+    }
+
+    refinementBox
+    {
+        type searchableBox;
+        min (-1.0 -0.7 0.0);
+        max ( 8.0  0.7 2.5);
+    }
+};
+
+
+
+// Settings for the castellatedMesh generation.
+castellatedMeshControls
+{
+
+    // Refinement parameters
+    // ~~~~~~~~~~~~~~~~~~~~~
+
+    // If local number of cells is >= maxLocalCells on any processor
+    // switches from from refinement followed by balancing
+    // (current method) to (weighted) balancing before refinement.
+    maxLocalCells 100000;
+
+    // Overall cell limit (approximately). Refinement will stop immediately
+    // upon reaching this number so a refinement level might not complete.
+    // Note that this is the number of cells before removing the part which
+    // is not 'visible' from the keepPoint. The final number of cells might
+    // actually be a lot less.
+    maxGlobalCells 2000000;
+
+    // The surface refinement loop might spend lots of iterations refining just a
+    // few cells. This setting will cause refinement to stop if <= minimumRefine
+    // are selected for refinement. Note: it will at least do one iteration
+    // (unless the number of cells to refine is 0)
+    minRefinementCells 10;
+
+    // Allow a certain level of imbalance during refining
+    // (since balancing is quite expensive)
+    // Expressed as fraction of perfect balance (= overall number of cells /
+    // nProcs). 0=balance always.
+    maxLoadUnbalance 0.10;
+
+
+    // Number of buffer layers between different levels.
+    // 1 means normal 2:1 refinement restriction, larger means slower
+    // refinement.
+    nCellsBetweenLevels 3;
+
+
+
+    // Explicit feature edge refinement
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    // Specifies a level for any cell intersected by its edges.
+    // This is a featureEdgeMesh, read from constant/triSurface for now.
+    features
+    (
+        {
+            file "motorBike.eMesh";
+            level 6;
+        }
+    );
+
+
+
+    // Surface based refinement
+    // ~~~~~~~~~~~~~~~~~~~~~~~~
+
+    // Specifies two levels for every surface. The first is the minimum level,
+    // every cell intersecting a surface gets refined up to the minimum level.
+    // The second level is the maximum level. Cells that 'see' multiple
+    // intersections where the intersections make an
+    // angle > resolveFeatureAngle get refined up to the maximum level.
+
+    refinementSurfaces
+    {
+        motorBike
+        {
+            // Surface-wise min and max refinement level
+            level (5 6);
+
+            // Optional specification of patch type (default is wall). No
+            // constraint types (cyclic, symmetry) etc. are allowed.
+            patchInfo
+            {
+                type wall;
+                inGroups (motorBikeGroup);
+            }
+        }
+    }
+
+    // Resolve sharp angles
+    resolveFeatureAngle 30;
+
+
+    // Region-wise refinement
+    // ~~~~~~~~~~~~~~~~~~~~~~
+
+    // Specifies refinement level for cells in relation to a surface. One of
+    // three modes
+    // - distance. 'levels' specifies per distance to the surface the
+    //   wanted refinement level. The distances need to be specified in
+    //   descending order.
+    // - inside. 'levels' is only one entry and only the level is used. All
+    //   cells inside the surface get refined up to the level. The surface
+    //   needs to be closed for this to be possible.
+    // - outside. Same but cells outside.
+
+    refinementRegions
+    {
+        refinementBox
+        {
+            mode inside;
+            levels ((1E15 4));
+        }
+    }
+
+
+    // Mesh selection
+    // ~~~~~~~~~~~~~~
+
+    // After refinement patches get added for all refinementSurfaces and
+    // all cells intersecting the surfaces get put into these patches. The
+    // section reachable from the locationInMesh is kept.
+    // NOTE: This point should never be on a face, always inside a cell, even
+    // after refinement.
+    locationInMesh (3.0001 3.0001 0.43);
+
+
+    // Whether any faceZones (as specified in the refinementSurfaces)
+    // are only on the boundary of corresponding cellZones or also allow
+    // free-standing zone faces. Not used if there are no faceZones.
+    allowFreeStandingZoneFaces true;
+}
+
+
+
+// Settings for the snapping.
+snapControls
+{
+    //- Number of patch smoothing iterations before finding correspondence
+    //  to surface
+    nSmoothPatch 3;
+
+    //- Relative distance for points to be attracted by surface feature point
+    //  or edge. True distance is this factor times local
+    //  maximum edge length.
+    tolerance 2.0;
+
+    //- Number of mesh displacement relaxation iterations.
+    nSolveIter 30;
+
+    //- Maximum number of snapping relaxation iterations. Should stop
+    //  before upon reaching a correct mesh.
+    nRelaxIter 5;
+
+    // Feature snapping
+
+        //- Number of feature edge snapping iterations.
+        //  Leave out altogether to disable.
+        nFeatureSnapIter 10;
+
+        //- Detect (geometric only) features by sampling the surface
+        //  (default=false).
+        implicitFeatureSnap false;
+
+        //- Use castellatedMeshControls::features (default = true)
+        explicitFeatureSnap true;
+
+        //- Detect points on multiple surfaces (only for explicitFeatureSnap)
+        multiRegionFeatureSnap false;
+}
+
+
+
+// Settings for the layer addition.
+addLayersControls
+{
+    // Are the thickness parameters below relative to the undistorted
+    // size of the refined cell outside layer (true) or absolute sizes (false).
+    relativeSizes true;
+
+    // Per final patch (so not geometry!) the layer information
+    layers
+    {
+        "(lowerWall|motorBike).*"
+        {
+            nSurfaceLayers 1;
+        }
+    }
+
+    // Expansion factor for layer mesh
+    expansionRatio 1.0;
+
+    // Wanted thickness of final added cell layer. If multiple layers
+    // is the thickness of the layer furthest away from the wall.
+    // Relative to undistorted size of cell outside layer.
+    // See relativeSizes parameter.
+    finalLayerThickness 0.3;
+
+    // Minimum thickness of cell layer. If for any reason layer
+    // cannot be above minThickness do not add layer.
+    // Relative to undistorted size of cell outside layer.
+    minThickness 0.1;
+
+    // If points get not extruded do nGrow layers of connected faces that are
+    // also not grown. This helps convergence of the layer addition process
+    // close to features.
+    // Note: changed(corrected) w.r.t 17x! (didn't do anything in 17x)
+    nGrow 0;
+
+    // Advanced settings
+
+    // When not to extrude surface. 0 is flat surface, 90 is when two faces
+    // are perpendicular
+    featureAngle 60;
+
+    // At non-patched sides allow mesh to slip if extrusion direction makes
+    // angle larger than slipFeatureAngle.
+    slipFeatureAngle 30;
+
+    // Maximum number of snapping relaxation iterations. Should stop
+    // before upon reaching a correct mesh.
+    nRelaxIter 3;
+
+    // Number of smoothing iterations of surface normals
+    nSmoothSurfaceNormals 1;
+
+    // Number of smoothing iterations of interior mesh movement direction
+    nSmoothNormals 3;
+
+    // Smooth layer thickness over surface patches
+    nSmoothThickness 10;
+
+    // Stop layer growth on highly warped cells
+    maxFaceThicknessRatio 0.5;
+
+    // Reduce layer growth where ratio thickness to medial
+    // distance is large
+    maxThicknessToMedialRatio 0.3;
+
+    // Angle used to pick up medial axis points
+    // Note: changed(corrected) w.r.t 17x! 90 degrees corresponds to 130 in 17x.
+    minMedianAxisAngle 90;
+
+
+    // Create buffer region for new layer terminations
+    nBufferCellsNoExtrude 0;
+
+
+    // Overall max number of layer addition iterations. The mesher will exit
+    // if it reaches this number of iterations; possibly with an illegal
+    // mesh.
+    nLayerIter 50;
+}
+
+
+
+// Generic mesh quality settings. At any undoable phase these determine
+// where to undo.
+meshQualityControls
+{
+    #include "meshQualityDict"
+
+
+    // Advanced
+
+    //- Number of error distribution iterations
+    nSmoothScale 4;
+    //- Amount to scale back displacement at error points
+    errorReduction 0.75;
+}
+
+
+// Advanced
+
+// Merge tolerance. Is fraction of overall bounding box of initial mesh.
+// Note: the write tolerance needs to be higher than this.
+mergeTolerance 1e-6;
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/motorBike/system/surfaceFeatureExtractDict

@@ -0,0 +1,48 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      surfaceFeatureExtractDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+motorBike.obj
+{
+    // How to obtain raw features (extractFromFile || extractFromSurface)
+    extractionMethod    extractFromSurface;
+
+    extractFromSurfaceCoeffs
+    {
+        // Mark edges whose adjacent surface normals are at an angle less
+        // than includedAngle as features
+        // - 0  : selects no edges
+        // - 180: selects all edges
+        includedAngle   150;
+    }
+
+    subsetFeatures
+    {
+        // Keep nonManifold edges (edges with >2 connected faces)
+        nonManifoldEdges       no;
+
+        // Keep open edges (edges with 1 connected face)
+        openEdges       yes;
+    }
+
+
+    // Write options
+
+        // Write features to obj format for postprocessing
+        writeObj                yes;
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/Allclean

@@ -0,0 +1,21 @@
+#!/bin/sh
+cd ${0%/*} || exit 1    # run from this directory
+
+# Source tutorial clean functions
+. $WM_PROJECT_DIR/bin/tools/CleanFunctions
+
+rm -rf constant/extendedFeatureEdgeMesh > /dev/null 2>&1
+rm -f constant/triSurface/*.eMesh > /dev/null 2>&1
+rm -f constant/polyMesh/boundary
+
+cleanCase
+rm -rf VTK
+rm -rf constant/cellToRegion constant/polyMesh/sets
+rm -rf 0
+rm -rf constant/bottomAir/polyMesh
+rm -rf constant/topAir/polyMesh
+rm -rf constant/heater/polyMesh
+rm -rf constant/leftSolid/polyMesh
+rm -rf constant/rightSolid/polyMesh
+
+# ----------------------------------------------------------------- end-of-file

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/Allrun

@@ -0,0 +1,39 @@
+#!/bin/sh
+cd ${0%/*} || exit 1    # run from this directory
+
+
+# Source tutorial run functions
+. $WM_PROJECT_DIR/bin/tools/RunFunctions
+
+rm -rf constant/polyMesh/sets
+
+runApplication blockMesh
+
+runApplication surfaceFeatureExtract
+
+runApplication snappyHexMesh -overwrite
+runApplication splitMeshRegions -cellZones -overwrite
+
+for i in bottomAir topAir heater leftSolid rightSolid
+do
+    runApplication changeDictionary -region $i
+    mv log.changeDictionary log.changeDictionary.$i 2>&1
+done
+
+runApplication decomposePar -allRegions
+
+runParallel createZeroDirectory 4
+
+#-- Run in parallel
+runParallel $(getApplication) 4
+
+# Reconstruct
+runApplication reconstructPar -allRegions
+
+
+echo
+echo "creating files for paraview post-processing"
+echo
+paraFoam -touchAll
+
+# ----------------------------------------------------------------- end-of-file

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/bottomAir/g

@@ -0,0 +1,20 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       uniformDimensionedVectorField;
+    object      g;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 1 -2 0 0 0 0];
+value           (0 -9.81 0);
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/bottomAir/radiationProperties

@@ -0,0 +1,22 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      radiationProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+radiation       off;
+
+radiationModel  none;
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/bottomAir/thermophysicalProperties

@@ -0,0 +1,49 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant/bottomAir";
+    object      thermophysicalProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+thermoType
+{
+    type            heRhoThermo;
+    mixture         pureMixture;
+    transport       const;
+    thermo          hConst;
+    equationOfState perfectGas;
+    specie          specie;
+    energy          sensibleEnthalpy;
+}
+
+mixture
+{
+    specie
+    {
+        nMoles          1;
+        molWeight       28.9;
+    }
+    thermodynamics
+    {
+        Cp              1000;
+        Hf              0;
+    }
+    transport
+    {
+        mu              1.8e-05;
+        Pr              0.7;
+    }
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/bottomAir/turbulenceProperties

@@ -0,0 +1,19 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      turbulenceProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+simulationType  laminar;
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/heater/radiationProperties

@@ -0,0 +1,34 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      radiationProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+radiationModel  opaqueSolid;
+
+absorptionEmissionModel constantAbsorptionEmission;
+
+constantAbsorptionEmissionCoeffs
+{
+    absorptivity    absorptivity [ 0 -1 0 0 0 0 0 ] 0.0;  //opaque
+    emissivity      emissivity [ 0 -1 0 0 0 0 0 ] 0.1;
+    E               E [ 1 -1 -3 0 0 0 0 ] 0;
+}
+
+scatterModel    none;
+
+transmissivityModel none;
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/heater/thermophysicalProperties

@@ -0,0 +1,53 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      thermophysicalProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+thermoType
+{
+    type            heSolidThermo;
+    mixture         pureMixture;
+    transport       constIso;
+    thermo          hConst;
+    equationOfState rhoConst;
+    specie          specie;
+    energy          sensibleEnthalpy;
+}
+
+mixture
+{
+    specie
+    {
+        nMoles      1;
+        molWeight   12;
+    }
+
+    transport
+    {
+        kappa   80;
+    }
+
+    thermodynamics
+    {
+        Hf      0;
+        Cp      450;
+    }
+
+    equationOfState
+    {
+        rho     8000;
+    }
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/leftSolid/radiationProperties

@@ -0,0 +1,34 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      radiationProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+radiationModel  opaqueSolid;
+
+absorptionEmissionModel constantAbsorptionEmission;
+
+constantAbsorptionEmissionCoeffs
+{
+    absorptivity    absorptivity [ 0 -1 0 0 0 0 0 ] 0.0;  //opaque
+    emissivity      emissivity [ 0 -1 0 0 0 0 0 ] 0.1;
+    E               E [ 1 -1 -3 0 0 0 0 ] 0;
+}
+
+scatterModel    none;
+
+transmissivityModel none;
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/leftSolid/thermophysicalProperties

@@ -0,0 +1 @@
+../heater/thermophysicalProperties

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/regionProperties

@@ -0,0 +1,25 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      regionProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+regions
+(
+    fluid       (bottomAir topAir)
+    solid       (heater leftSolid rightSolid)
+);
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/rightSolid/radiationProperties

@@ -0,0 +1,34 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      radiationProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+radiationModel  opaqueSolid;
+
+absorptionEmissionModel constantAbsorptionEmission;
+
+constantAbsorptionEmissionCoeffs
+{
+    absorptivity    absorptivity [ 0 -1 0 0 0 0 0 ] 0.0;  //opaque
+    emissivity      emissivity [ 0 -1 0 0 0 0 0 ] 0.1;
+    E               E [ 1 -1 -3 0 0 0 0 ] 0;
+}
+
+scatterModel    none;
+
+transmissivityModel none;
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/rightSolid/thermophysicalProperties

@@ -0,0 +1 @@
+../heater/thermophysicalProperties

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/topAir/g

@@ -0,0 +1,20 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       uniformDimensionedVectorField;
+    object      g;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 1 -2 0 0 0 0];
+value           (0 -9.81 0);
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/topAir/radiationProperties

@@ -0,0 +1,22 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      radiationProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+radiation       off;
+
+radiationModel  none;
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/topAir/thermophysicalProperties

@@ -0,0 +1,49 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant/topAir";
+    object      thermophysicalProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+thermoType
+{
+    type            heRhoThermo;
+    mixture         pureMixture;
+    transport       const;
+    thermo          hConst;
+    equationOfState perfectGas;
+    specie          specie;
+    energy          sensibleEnthalpy;
+}
+
+mixture
+{
+    specie
+    {
+        nMoles          1;
+        molWeight       28.9;
+    }
+    thermodynamics
+    {
+        Cp              1000;
+        Hf              0;
+    }
+    transport
+    {
+        mu              1.8e-05;
+        Pr              0.7;
+    }
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/constant/topAir/turbulenceProperties

@@ -0,0 +1,19 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      turbulenceProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+simulationType  laminar;
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/README

@@ -0,0 +1,3 @@
+fvSolution is used for outer correctors specification.
+fvSchemes is only so that pre-processing activities can proceed
+

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/blockMeshDict

@@ -0,0 +1,96 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      blockMeshDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+convertToMeters 1;
+
+vertices
+(
+    (-0.1 -0.04  -0.05)
+    ( 0.1 -0.04  -0.05)
+    ( 0.1  0.04  -0.05)
+    (-0.1  0.04  -0.05)
+    (-0.1 -0.04   0.05)
+    ( 0.1 -0.04   0.05)
+    ( 0.1  0.04   0.05)
+    (-0.1  0.04   0.05)
+);
+
+blocks
+(
+    hex (0 1 2 3 4 5 6 7) (30 10 10) simpleGrading (1 1 1)
+);
+
+edges
+(
+);
+
+boundary
+(
+    maxY
+    {
+        type wall;
+        faces
+        (
+            (3 7 6 2)
+        );
+    }
+    minX
+    {
+        type patch;
+        faces
+        (
+            (0 4 7 3)
+        );
+    }
+    maxX
+    {
+        type patch;
+        faces
+        (
+            (2 6 5 1)
+        );
+    }
+    minY
+    {
+        type wall;
+        faces
+        (
+            (1 5 4 0)
+        );
+    }
+    minZ
+    {
+        type wall;
+        faces
+        (
+            (0 3 2 1)
+        );
+    }
+    maxZ
+    {
+        type wall;
+        faces
+        (
+            (4 5 6 7)
+        );
+    }
+);
+
+mergePatchPairs
+(
+);
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/bottomAir/caseProperties

@@ -0,0 +1,66 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.0                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      caseProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+initialConditions
+{
+    alphat  uniform 0;
+    U       uniform (0.01 0 0);
+    p       uniform 100000;
+    p_rgh   uniform 100000;
+    rho     uniform 8000;
+    T       uniform 300;
+}
+
+
+boundaryConditions
+{
+    thermalWalls
+    {
+        category    wall;
+        type        noSlip;
+        patches     (minX maxX minY minZ maxZ);
+        options
+        {
+            wallFunction highReynolds;
+            motion      stationary;
+            heatTransfer adiabatic;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+    thermalCoupledWalls
+    {
+        category    wall;
+        type        noSlip;
+        patches     (".*_to_.*");
+        options
+        {
+            wallFunction highReynolds;
+            motion      stationary;
+            heatTransfer thermalCoupled;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/bottomAir/changeDictionaryDict

@@ -0,0 +1,32 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      changeDictionaryDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dictionaryReplacement
+{
+    boundary
+    {
+        minX
+        {
+            type            wall;
+        }
+        maxX
+        {
+            type            wall;
+        }
+    }
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/bottomAir/decomposeParDict

@@ -0,0 +1,72 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    note        "mesh decomposition control dictionary";
+    location    "system";
+    object      decomposeParDict;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+numberOfSubdomains  4;
+
+//- Keep owner and neighbour on same processor for faces in zones:
+// preserveFaceZones (heater solid1 solid3);
+
+method          scotch;
+// method          hierarchical;
+// method          simple;
+// method          manual;
+
+simpleCoeffs
+{
+    n           (2 2 1);
+    delta       0.001;
+}
+
+hierarchicalCoeffs
+{
+    n           (2 2 1);
+    delta       0.001;
+    order       xyz;
+}
+
+scotchCoeffs
+{
+    //processorWeights
+    //(
+    //    1
+    //    1
+    //    1
+    //    1
+    //);
+    //writeGraph  true;
+    //strategy "b";
+}
+
+manualCoeffs
+{
+    dataFile    "decompositionData";
+}
+
+
+//// Is the case distributed
+//distributed     yes;
+//// Per slave (so nProcs-1 entries) the directory above the case.
+//roots
+//(
+//    "/tmp"
+//    "/tmp"
+//);
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/bottomAir/fvSchemes

@@ -0,0 +1,61 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+ddtSchemes
+{
+    default Euler;
+}
+
+gradSchemes
+{
+    default         Gauss linear;
+}
+
+divSchemes
+{
+    default         none;
+    div(phi,U)      Gauss upwind;
+    div(phi,K)      Gauss linear;
+    div(phi,h)      Gauss upwind;
+    div(phi,k)      Gauss upwind;
+    div(phi,epsilon) Gauss upwind;
+    div(phi,R)      Gauss upwind;
+    div(R)          Gauss linear;
+    div(((rho*nuEff)*dev2(T(grad(U))))) Gauss linear;
+}
+
+laplacianSchemes
+{
+    default         Gauss linear limited corrected 0.333;
+}
+
+interpolationSchemes
+{
+    default         linear;
+}
+
+snGradSchemes
+{
+    default         limited corrected 0.333;
+}
+
+fluxRequired
+{
+    default         no;
+    p_rgh;
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/bottomAir/fvSolution

@@ -0,0 +1,85 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+solvers
+{
+    "(rho|rhoFinal)"
+    {
+        solver          PCG
+        preconditioner  DIC;
+        tolerance       1e-7;
+        relTol          0;
+    }
+
+    p_rgh
+    {
+        solver          GAMG;
+        tolerance       1e-7;
+        relTol          0.01;
+
+        smoother        GaussSeidel;
+
+        cacheAgglomeration true;
+        nCellsInCoarsestLevel 10;
+        agglomerator    faceAreaPair;
+        mergeLevels     1;
+
+        maxIter         100;
+    }
+
+    p_rghFinal
+    {
+        $p_rgh;
+        tolerance        1e-7;
+        relTol           0;
+    }
+
+    "(U|h|k|epsilon|R)"
+    {
+        solver           PBiCG;
+        preconditioner   DILU;
+        tolerance        1e-7;
+        relTol           0.1;
+    }
+
+    "(U|h|k|epsilon|R)Final"
+    {
+        $U;
+        tolerance        1e-07;
+        relTol           0;
+    }
+}
+
+PIMPLE
+{
+    momentumPredictor   on;
+    nCorrectors         2;
+    nNonOrthogonalCorrectors 0;
+}
+
+relaxationFactors
+{
+    fields
+    {
+    }
+    equations
+    {
+        "h.*"           1;
+        "U.*"           1;
+    }
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/controlDict

@@ -0,0 +1,54 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      controlDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+application     chtMultiRegionFoam;
+
+startFrom       latestTime;
+
+startTime       0.001;
+
+stopAt          writeNow;   //endTime;
+
+endTime         75;
+
+deltaT          0.001;
+
+writeControl    adjustableRunTime;
+
+writeInterval   15;
+
+purgeWrite      0;
+
+writeFormat     ascii;
+
+writePrecision  7;
+
+writeCompression off;
+
+timeFormat      general;
+
+timePrecision   6;
+
+runTimeModifiable true;
+
+maxCo           0.3;
+
+maxDi           10.0;
+
+adjustTimeStep  yes;
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/decomposeParDict

@@ -0,0 +1,72 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    note        "mesh decomposition control dictionary";
+    location    "system";
+    object      decomposeParDict;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+numberOfSubdomains  4;
+
+//- Keep owner and neighbour on same processor for faces in zones:
+// preserveFaceZones (heater solid1 solid3);
+
+// method          scotch;
+method          hierarchical;
+// method          simple;
+// method          manual;
+
+simpleCoeffs
+{
+    n           (2 2 1);
+    delta       0.001;
+}
+
+hierarchicalCoeffs
+{
+    n           (2 2 1);
+    delta       0.001;
+    order       xyz;
+}
+
+scotchCoeffs
+{
+    //processorWeights
+    //(
+    //    1
+    //    1
+    //    1
+    //    1
+    //);
+    //writeGraph  true;
+    //strategy "b";
+}
+
+manualCoeffs
+{
+    dataFile    "decompositionData";
+}
+
+
+//// Is the case distributed
+//distributed     yes;
+//// Per slave (so nProcs-1 entries) the directory above the case.
+//roots
+//(
+//    "/tmp"
+//    "/tmp"
+//);
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/fvSchemes

@@ -0,0 +1,46 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+ddtSchemes
+{
+}
+
+gradSchemes
+{
+}
+
+divSchemes
+{
+}
+
+laplacianSchemes
+{
+}
+
+interpolationSchemes
+{
+}
+
+snGradSchemes
+{
+}
+
+fluxRequired
+{
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/fvSolution

@@ -0,0 +1,22 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+PIMPLE
+{
+    nOuterCorrectors 1;
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/heater/caseProperties

@@ -0,0 +1,73 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.0                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      caseProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+initialConditions
+{
+    p       uniform 100000;
+    T       uniform 300;
+}
+
+
+boundaryConditions
+{
+    fixedTemperature
+    {
+        category    wall;
+        type        thermal;
+        patches     (minY);
+        options
+        {
+            heatTransfer fixedTemperature;
+        }
+        values
+        {
+            $:initialConditions;
+            T       uniform 500;
+        }
+    }
+    thermalWalls
+    {
+        category    wall;
+        type        thermal;
+        patches     (minZ maxZ);
+        options
+        {
+            heatTransfer adiabatic;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+    thermalCoupledWalls
+    {
+        category    wall;
+        type        thermal;
+        patches     (".*_to_.*");
+        options
+        {
+            heatTransfer thermalCoupled;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/heater/changeDictionaryDict

@@ -0,0 +1,36 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      changeDictionaryDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dictionaryReplacement
+{
+    boundary
+    {
+        minY
+        {
+            type            patch;
+        }
+        minZ
+        {
+            type            patch;
+        }
+        maxZ
+        {
+            type            patch;
+        }
+    }
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/heater/decomposeParDict

@@ -0,0 +1,72 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    note        "mesh decomposition control dictionary";
+    location    "system";
+    object      decomposeParDict;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+numberOfSubdomains  4;
+
+//- Keep owner and neighbour on same processor for faces in zones:
+// preserveFaceZones (heater solid1 solid3);
+
+method          scotch;
+// method          hierarchical;
+// method          simple;
+// method          manual;
+
+simpleCoeffs
+{
+    n           (2 2 1);
+    delta       0.001;
+}
+
+hierarchicalCoeffs
+{
+    n           (2 2 1);
+    delta       0.001;
+    order       xyz;
+}
+
+scotchCoeffs
+{
+    //processorWeights
+    //(
+    //    1
+    //    1
+    //    1
+    //    1
+    //);
+    //writeGraph  true;
+    //strategy "b";
+}
+
+manualCoeffs
+{
+    dataFile    "decompositionData";
+}
+
+
+//// Is the case distributed
+//distributed     yes;
+//// Per slave (so nProcs-1 entries) the directory above the case.
+//roots
+//(
+//    "/tmp"
+//    "/tmp"
+//);
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/heater/fvSchemes

@@ -0,0 +1,53 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+ddtSchemes
+{
+    default Euler;
+}
+
+gradSchemes
+{
+    default         Gauss linear;
+}
+
+divSchemes
+{
+    default         none;
+}
+
+laplacianSchemes
+{
+    default             none;
+    laplacian(alpha,h)  Gauss linear limited corrected 0.333;
+}
+
+interpolationSchemes
+{
+    default         linear;
+}
+
+snGradSchemes
+{
+    default         limited corrected 0.333;
+}
+
+fluxRequired
+{
+    default         no;
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/heater/fvSolution

@@ -0,0 +1,40 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+solvers
+{
+    h
+    {
+        solver           PCG;
+        preconditioner   DIC;
+        tolerance        1e-06;
+        relTol           0.1;
+    }
+
+    hFinal
+    {
+        $h;
+        tolerance        1e-06;
+        relTol           0;
+    }
+}
+
+PIMPLE
+{
+    nNonOrthogonalCorrectors 1;
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/leftSolid/caseProperties

@@ -0,0 +1,59 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.0                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      caseProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+initialConditions
+{
+    p       uniform 100000;
+    rho     uniform 8000;
+    T       uniform 300;
+}
+
+
+boundaryConditions
+{
+    thermalWalls
+    {
+        category    wall;
+        type        thermal;
+        patches     (minX minZ maxZ);
+        options
+        {
+            heatTransfer adiabatic;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+    thermalCoupledWalls
+    {
+        category    wall;
+        type        thermal;
+        patches     (".*_to_.*");
+        options
+        {
+            heatTransfer thermalCoupled;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/leftSolid/changeDictionaryDict

@@ -0,0 +1,32 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      changeDictionaryDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dictionaryReplacement
+{
+    boundary
+    {
+        minZ
+        {
+            type            patch;
+        }
+        maxZ
+        {
+            type            patch;
+        }
+    }
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/leftSolid/decomposeParDict

@@ -0,0 +1,72 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    note        "mesh decomposition control dictionary";
+    location    "system";
+    object      decomposeParDict;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+numberOfSubdomains  4;
+
+//- Keep owner and neighbour on same processor for faces in zones:
+// preserveFaceZones (heater solid1 solid3);
+
+method          scotch;
+// method          hierarchical;
+// method          simple;
+// method          manual;
+
+simpleCoeffs
+{
+    n           (2 2 1);
+    delta       0.001;
+}
+
+hierarchicalCoeffs
+{
+    n           (2 2 1);
+    delta       0.001;
+    order       xyz;
+}
+
+scotchCoeffs
+{
+    //processorWeights
+    //(
+    //    1
+    //    1
+    //    1
+    //    1
+    //);
+    //writeGraph  true;
+    //strategy "b";
+}
+
+manualCoeffs
+{
+    dataFile    "decompositionData";
+}
+
+
+//// Is the case distributed
+//distributed     yes;
+//// Per slave (so nProcs-1 entries) the directory above the case.
+//roots
+//(
+//    "/tmp"
+//    "/tmp"
+//);
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/leftSolid/fvSchemes

@@ -0,0 +1,53 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+ddtSchemes
+{
+    default Euler;
+}
+
+gradSchemes
+{
+    default         Gauss linear;
+}
+
+divSchemes
+{
+    default         none;
+}
+
+laplacianSchemes
+{
+    default             none;
+    laplacian(alpha,h)  Gauss linear limited corrected 0.333;
+}
+
+interpolationSchemes
+{
+    default         linear;
+}
+
+snGradSchemes
+{
+    default         limited corrected 0.333;
+}
+
+fluxRequired
+{
+    default         no;
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/leftSolid/fvSolution

@@ -0,0 +1 @@
+../heater/fvSolution

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/rightSolid/caseProperties

@@ -0,0 +1,59 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.0                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      caseProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+initialConditions
+{
+    p       uniform 100000;
+    rho     uniform 8000;
+    T       uniform 300;
+}
+
+
+boundaryConditions
+{
+    thermalWalls
+    {
+        category    wall;
+        type        thermal;
+        patches     (maxX minZ maxZ);
+        options
+        {
+            heatTransfer adiabatic;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+    thermalCoupledWalls
+    {
+        category    wall;
+        type        thermal;
+        patches     (".*_to_.*");
+        options
+        {
+            heatTransfer thermalCoupled;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/rightSolid/changeDictionaryDict

@@ -0,0 +1,32 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      changeDictionaryDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dictionaryReplacement
+{
+    boundary
+    {
+        minZ
+        {
+            type            patch;
+        }
+        maxZ
+        {
+            type            patch;
+        }
+    }
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/rightSolid/decomposeParDict

@@ -0,0 +1,72 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    note        "mesh decomposition control dictionary";
+    location    "system";
+    object      decomposeParDict;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+numberOfSubdomains  4;
+
+//- Keep owner and neighbour on same processor for faces in zones:
+// preserveFaceZones (heater solid1 solid3);
+
+method          scotch;
+// method          hierarchical;
+// method          simple;
+// method          manual;
+
+simpleCoeffs
+{
+    n           (2 2 1);
+    delta       0.001;
+}
+
+hierarchicalCoeffs
+{
+    n           (2 2 1);
+    delta       0.001;
+    order       xyz;
+}
+
+scotchCoeffs
+{
+    //processorWeights
+    //(
+    //    1
+    //    1
+    //    1
+    //    1
+    //);
+    //writeGraph  true;
+    //strategy "b";
+}
+
+manualCoeffs
+{
+    dataFile    "decompositionData";
+}
+
+
+//// Is the case distributed
+//distributed     yes;
+//// Per slave (so nProcs-1 entries) the directory above the case.
+//roots
+//(
+//    "/tmp"
+//    "/tmp"
+//);
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/rightSolid/fvSchemes

@@ -0,0 +1,53 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+ddtSchemes
+{
+    default Euler;
+}
+
+gradSchemes
+{
+    default         Gauss linear;
+}
+
+divSchemes
+{
+    default         none;
+}
+
+laplacianSchemes
+{
+    default             none;
+    laplacian(alpha,h)  Gauss linear limited corrected 0.333;
+}
+
+interpolationSchemes
+{
+    default         linear;
+}
+
+snGradSchemes
+{
+    default         limited corrected 0.333;
+}
+
+fluxRequired
+{
+    default         no;
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/rightSolid/fvSolution

@@ -0,0 +1 @@
+../heater/fvSolution

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/snappyHexMeshDict

@@ -0,0 +1,419 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      autoHexMeshDict;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+// Which of the steps to run
+castellatedMesh true;
+snap            true;
+addLayers       false;
+
+
+// Geometry. Definition of all surfaces. All surfaces are of class
+// searchableSurface.
+// Surfaces are used
+// - to specify refinement for any mesh cell intersecting it
+// - to specify refinement for any mesh cell inside/outside/near
+// - to 'snap' the mesh boundary to the surface
+geometry
+{
+    bottomAir.stl
+    {
+        type triSurfaceMesh;
+        name bottomAir;
+    }
+
+    topAir.stl
+    {
+        type triSurfaceMesh;
+        name topAir;
+    }
+
+    leftSolid.stl
+    {
+        type triSurfaceMesh;
+        name leftSolid;
+    }
+
+    rightSolid.stl
+    {
+        type triSurfaceMesh;
+        name rightSolid;
+    }
+
+    heater.stl
+    {
+        type triSurfaceMesh;
+        name heater;
+    }
+
+    //refinementBox
+    //{
+    //    type searchableBox;
+    //    min (-0.3 -0.4 -0.1);
+    //    max ( 3.0  0.4  1.4);
+   // }
+};
+
+
+
+// Settings for the castellatedMesh generation.
+castellatedMeshControls
+{
+
+    // Refinement parameters
+    // ~~~~~~~~~~~~~~~~~~~~~
+
+    // If local number of cells is >= maxLocalCells on any processor
+    // switches from from refinement followed by balancing
+    // (current method) to (weighted) balancing before refinement.
+    maxLocalCells 100000;
+
+    // Overall cell limit (approximately). Refinement will stop immediately
+    // upon reaching this number so a refinement level might not complete.
+    // Note that this is the number of cells before removing the part which
+    // is not 'visible' from the keepPoint. The final number of cells might
+    // actually be a lot less.
+    maxGlobalCells 2000000;
+
+    // The surface refinement loop might spend lots of iterations
+    // refining just a few cells. This setting will cause refinement
+    // to stop if <= minimumRefine are selected for refinement. Note:
+    // it will at least do one iteration (unless the number of cells
+    // to refine is 0)
+    minRefinementCells 10;
+
+    // Number of buffer layers between different levels.
+    // 1 means normal 2:1 refinement restriction, larger means slower
+    // refinement.
+    nCellsBetweenLevels 2;
+
+
+
+    // Explicit feature edge refinement
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    // Specifies a level for any cell intersected by its edges.
+    // This is a featureEdgeMesh, read from constant/triSurface for now.
+    features
+    (
+        {
+            file "bottomAir.eMesh";
+            level 1;
+        }
+        {
+            file "heater.eMesh";
+            level 1;
+        }
+        {
+            file "leftSolid.eMesh";
+            level 1;
+        }
+        {
+            file "rightSolid.eMesh";
+            level 1;
+        }
+        {
+            file "topAir.eMesh";
+            level 1;
+        }
+    );
+
+
+
+    // Surface based refinement
+    // ~~~~~~~~~~~~~~~~~~~~~~~~
+
+    // Specifies two levels for every surface. The first is the minimum level,
+    // every cell intersecting a surface gets refined up to the minimum level.
+    // The second level is the maximum level. Cells that 'see' multiple
+    // intersections where the intersections make an
+    // angle > resolveFeatureAngle get refined up to the maximum level.
+
+    refinementSurfaces
+    {
+        bottomAir
+        {
+            // Surface-wise min and max refinement level
+            level (1 1);
+
+            faceZone bottomAir;
+            cellZone bottomAir;
+            cellZoneInside inside;
+        }
+
+        topAir
+        {
+            // Surface-wise min and max refinement level
+            level (1 1);
+
+            faceZone topAir;
+            cellZone topAir;
+            cellZoneInside inside;
+        }
+
+        heater
+        {
+            // Surface-wise min and max refinement level
+            level (0 0);
+
+            faceZone heater;
+            cellZone heater;
+            cellZoneInside inside;
+        }
+
+        leftSolid
+        {
+            // Surface-wise min and max refinement level
+            level (1 1);
+
+            faceZone leftSolid;
+            cellZone leftSolid;
+            cellZoneInside inside;
+        }
+
+        rightSolid
+        {
+            // Surface-wise min and max refinement level
+            level (1 1);
+
+            faceZone rightSolid;
+            cellZone rightSolid;
+            cellZoneInside inside;
+        }
+    }
+
+    // Resolve sharp angles
+    resolveFeatureAngle 30;
+
+
+    // Region-wise refinement
+    // ~~~~~~~~~~~~~~~~~~~~~~
+
+    // Specifies refinement level for cells in relation to a surface. One of
+    // three modes
+    // - distance. 'levels' specifies per distance to the surface the
+    //   wanted refinement level. The distances need to be specified in
+    //   descending order.
+    // - inside. 'levels' is only one entry and only the level is used. All
+    //   cells inside the surface get refined up to the level. The surface
+    //   needs to be closed for this to be possible.
+    // - outside. Same but cells outside.
+
+    refinementRegions
+    {
+        //refinementBox
+        //{
+        //    mode inside;
+        //    levels ((1E15 4));
+        //}
+    }
+
+
+    // Mesh selection
+    // ~~~~~~~~~~~~~~
+
+    // After refinement patches get added for all refinementSurfaces and
+    // all cells intersecting the surfaces get put into these patches. The
+    // section reachable from the locationInMesh is kept.
+    // NOTE: This point should never be on a face, always inside a cell, even
+    // after refinement.
+    locationInMesh (0.01 0.01 0.01);
+
+
+    // Whether any faceZones (as specified in the refinementSurfaces)
+    // are only on the boundary of corresponding cellZones or also allow
+    // free-standing zone faces. Not used if there are no faceZones.
+    allowFreeStandingZoneFaces false;
+}
+
+
+
+// Settings for the snapping.
+snapControls
+{
+    //- Number of patch smoothing iterations before finding correspondence
+    //  to surface
+    nSmoothPatch 3;
+
+    //- Relative distance for points to be attracted by surface feature point
+    //  or edge. True distance is this factor times local
+    //  maximum edge length.
+    tolerance 1.0;
+
+    //- Number of mesh displacement relaxation iterations.
+    nSolveIter 30;
+
+    //- Maximum number of snapping relaxation iterations. Should stop
+    //  before upon reaching a correct mesh.
+    nRelaxIter 5;
+
+    //- Highly experimental and wip: number of feature edge snapping
+    //  iterations. Leave out altogether to disable.
+    //  Of limited use in this case since faceZone faces not handled.
+    nFeatureSnapIter 10;
+}
+
+
+
+// Settings for the layer addition.
+addLayersControls
+{
+    relativeSizes true;
+
+    // Per final patch (so not geometry!) the layer information
+    layers
+    {
+        maxY
+        {
+            nSurfaceLayers 3;
+        }
+    }
+
+    // Expansion factor for layer mesh
+    expansionRatio 1.3;
+
+    // Wanted thickness of final added cell layer. If multiple layers
+    // is the thickness of the layer furthest away from the wall.
+    // Relative to undistorted size of cell outside layer.
+    finalLayerThickness 1;
+
+    // Minimum thickness of cell layer. If for any reason layer
+    // cannot be above minThickness do not add layer.
+    // Relative to undistorted size of cell outside layer.
+    minThickness 0.1;
+
+    // If points get not extruded do nGrow layers of connected faces that are
+    // also not grown. This helps convergence of the layer addition process
+    // close to features.
+    // Note: changed(corrected) w.r.t 17x! (didn't do anything in 17x)
+    nGrow 0;
+
+    // Advanced settings
+
+    // When not to extrude surface. 0 is flat surface, 90 is when two faces
+    // are perpendicular
+    featureAngle 30;
+
+    // Maximum number of snapping relaxation iterations. Should stop
+    // before upon reaching a correct mesh.
+    nRelaxIter 3;
+
+    // Number of smoothing iterations of surface normals
+    nSmoothSurfaceNormals 1;
+
+    // Number of smoothing iterations of interior mesh movement direction
+    nSmoothNormals 3;
+
+    // Smooth layer thickness over surface patches
+    nSmoothThickness 2;
+
+    // Stop layer growth on highly warped cells
+    maxFaceThicknessRatio 0.5;
+
+    // Reduce layer growth where ratio thickness to medial
+    // distance is large
+    maxThicknessToMedialRatio 1;
+
+    // Angle used to pick up medial axis points
+    // Note: changed(corrected) w.r.t 17x! 90 degrees corresponds to 130 in 17x.
+    minMedianAxisAngle 90;
+
+    // Create buffer region for new layer terminations
+    nBufferCellsNoExtrude 0;
+
+    // Overall max number of layer addition iterations. The mesher will exit
+    // if it reaches this number of iterations; possibly with an illegal
+    // mesh.
+    nLayerIter 50;
+}
+
+
+
+// Generic mesh quality settings. At any undoable phase these determine
+// where to undo.
+meshQualityControls
+{
+    //- Maximum non-orthogonality allowed. Set to 180 to disable.
+    maxNonOrtho 65;
+
+    //- Max skewness allowed. Set to <0 to disable.
+    maxBoundarySkewness 20;
+    maxInternalSkewness 4;
+
+    //- Max concaveness allowed. Is angle (in degrees) below which concavity
+    //  is allowed. 0 is straight face, <0 would be convex face.
+    //  Set to 180 to disable.
+    maxConcave 80;
+
+    //- Minimum pyramid volume. Is absolute volume of cell pyramid.
+    //  Set to very negative number (e.g. -1E30) to disable.
+    minVol 0;
+
+    //- Minimum quality of the tet formed by the face-centre
+    //  and variable base point minimum decomposition triangles and
+    //  the cell centre.  Set to very negative number (e.g. -1E30) to
+    //  disable.
+    //     <0 = inside out tet,
+    //      0 = flat tet
+    //      1 = regular tet
+    minTetQuality 1e-30;
+
+    //- Minimum face area. Set to <0 to disable.
+    minArea -1;
+
+    //- Minimum face twist. Set to <-1 to disable. dot product of face normal
+    //- and face centre triangles normal
+    minTwist 0.02;
+
+    //- minimum normalised cell determinant
+    //- 1 = hex, <= 0 = folded or flattened illegal cell
+    minDeterminant 0.001;
+
+    //- minFaceWeight (0 -> 0.5)
+    minFaceWeight 0.02;
+
+    //- minVolRatio (0 -> 1)
+    minVolRatio 0.01;
+
+    //must be >0 for Fluent compatibility
+    minTriangleTwist -1;
+
+
+    // Advanced
+
+    //- Number of error distribution iterations
+    nSmoothScale 4;
+    //- amount to scale back displacement at error points
+    errorReduction 0.75;
+}
+
+
+// Advanced
+
+// Flags for optional output
+// 0 : only write final meshes
+// 1 : write intermediate meshes
+// 2 : write volScalarField with cellLevel for postprocessing
+// 4 : write current intersections as .obj files
+debug 0;
+
+
+// Merge tolerance. Is fraction of overall bounding box of initial mesh.
+// Note: the write tolerance needs to be higher than this.
+mergeTolerance 1e-6;
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/surfaceFeatureExtractDict

@@ -0,0 +1,99 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      surfaceFeatureExtractDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+bottomAir.stl
+{
+    extractionMethod    extractFromSurface;
+
+    extractFromSurfaceCoeffs
+    {
+        // Mark edges whose adjacent surface normals are at an angle less
+        // than includedAngle as features
+        // - 0  : selects no edges
+        // - 180: selects all edges
+        includedAngle   150;
+    }
+
+    // Write options
+    writeFeatureEdgeMesh    yes;
+}
+heater.stl
+{
+    extractionMethod    extractFromSurface;
+
+    extractFromSurfaceCoeffs
+    {
+        // Mark edges whose adjacent surface normals are at an angle less
+        // than includedAngle as features
+        // - 0  : selects no edges
+        // - 180: selects all edges
+        includedAngle   150;
+    }
+
+    // Write options
+    writeFeatureEdgeMesh    yes;
+}
+leftSolid.stl
+{
+    extractionMethod    extractFromSurface;
+
+    extractFromSurfaceCoeffs
+    {
+        // Mark edges whose adjacent surface normals are at an angle less
+        // than includedAngle as features
+        // - 0  : selects no edges
+        // - 180: selects all edges
+        includedAngle   150;
+    }
+
+    // Write options
+    writeFeatureEdgeMesh    yes;
+}
+rightSolid.stl
+{
+    extractionMethod    extractFromSurface;
+
+    extractFromSurfaceCoeffs
+    {
+        // Mark edges whose adjacent surface normals are at an angle less
+        // than includedAngle as features
+        // - 0  : selects no edges
+        // - 180: selects all edges
+        includedAngle   150;
+    }
+
+    // Write options
+    writeFeatureEdgeMesh    yes;
+}
+topAir.stl
+{
+    extractionMethod    extractFromSurface;
+
+    extractFromSurfaceCoeffs
+    {
+        // Mark edges whose adjacent surface normals are at an angle less
+        // than includedAngle as features
+        // - 0  : selects no edges
+        // - 180: selects all edges
+        includedAngle   150;
+    }
+
+    // Write options
+    writeFeatureEdgeMesh    yes;
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/topAir/caseProperties

@@ -0,0 +1,93 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.0                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      caseProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+initialConditions
+{
+    alphat  uniform 0;
+    U       uniform (0.1 0 0);
+    p       uniform 100000;
+    p_rgh   uniform 100000;
+    T       uniform 300;
+}
+
+
+boundaryConditions
+{
+    inlet
+    {
+        category    inlet;
+        type        subSonic;
+        patches     (minX);
+        options
+        {
+            flowSpecification fixedVelocity;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+    outlet
+    {
+        category    outlet;
+        type        subSonic;
+        patches     (maxX);
+        options
+        {
+            returnFlow  wall;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+    thermalWalls
+    {
+        category    wall;
+        type        noSlip;
+        patches     (maxY minZ maxZ);
+        options
+        {
+            wallFunction highReynolds;
+            motion      stationary;
+            heatTransfer adiabatic;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+    thermalCoupledWalls
+    {
+        category    wall;
+        type        noSlip;
+        patches     (".*_to_.*");
+        options
+        {
+            wallFunction highReynolds;
+            motion      stationary;
+            heatTransfer thermalCoupled;
+        }
+        values
+        {
+            $:initialConditions;
+        }
+    }
+}
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/topAir/changeDictionaryDict

@@ -0,0 +1,21 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      changeDictionaryDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dictionaryReplacement
+{
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/topAir/decomposeParDict

@@ -0,0 +1,72 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    note        "mesh decomposition control dictionary";
+    location    "system";
+    object      decomposeParDict;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+numberOfSubdomains  4;
+
+//- Keep owner and neighbour on same processor for faces in zones:
+// preserveFaceZones (heater solid1 solid3);
+
+method          scotch;
+// method          hierarchical;
+// method          simple;
+// method          manual;
+
+simpleCoeffs
+{
+    n           (2 2 1);
+    delta       0.001;
+}
+
+hierarchicalCoeffs
+{
+    n           (2 2 1);
+    delta       0.001;
+    order       xyz;
+}
+
+scotchCoeffs
+{
+    //processorWeights
+    //(
+    //    1
+    //    1
+    //    1
+    //    1
+    //);
+    //writeGraph  true;
+    //strategy "b";
+}
+
+manualCoeffs
+{
+    dataFile    "decompositionData";
+}
+
+
+//// Is the case distributed
+//distributed     yes;
+//// Per slave (so nProcs-1 entries) the directory above the case.
+//roots
+//(
+//    "/tmp"
+//    "/tmp"
+//);
+
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/topAir/fvSchemes

@@ -0,0 +1,61 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+ddtSchemes
+{
+    default Euler;
+}
+
+gradSchemes
+{
+    default         Gauss linear;
+}
+
+divSchemes
+{
+    default         none;
+    div(phi,U)      Gauss upwind;
+    div(phi,K)      Gauss linear;
+    div(phi,h)      Gauss upwind;
+    div(phi,k)      Gauss upwind;
+    div(phi,epsilon) Gauss upwind;
+    div(phi,R)      Gauss upwind;
+    div(R)          Gauss linear;
+    div(((rho*nuEff)*dev2(T(grad(U))))) Gauss linear;
+}
+
+laplacianSchemes
+{
+    default         Gauss linear limited corrected 0.333;
+}
+
+interpolationSchemes
+{
+    default         linear;
+}
+
+snGradSchemes
+{
+    default         limited corrected 0.333;
+}
+
+fluxRequired
+{
+    default         no;
+    p_rgh;
+}
+
+// ************************************************************************* //

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/system/topAir/fvSolution

@@ -0,0 +1,85 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  2.2.2                                 |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+solvers
+{
+    "(rho|rhoFinal)"
+    {
+        solver          PCG
+        preconditioner  DIC;
+        tolerance       1e-7;
+        relTol          0;
+    }
+
+    p_rgh
+    {
+        solver           GAMG;
+        tolerance        1e-7;
+        relTol           0.01;
+
+        smoother         GaussSeidel;
+
+        cacheAgglomeration true;
+        nCellsInCoarsestLevel 10;
+        agglomerator     faceAreaPair;
+        mergeLevels      1;
+
+        maxIter          100;
+    }
+
+    p_rghFinal
+    {
+        $p_rgh;
+        tolerance        1e-7;
+        relTol           0;
+    }
+
+    "(U|h|k|epsilon|R)"
+    {
+        solver           PBiCG;
+        preconditioner   DILU;
+        tolerance        1e-7;
+        relTol           0.1;
+    }
+
+    "(U|h|k|epsilon|R)Final"
+    {
+        $U;
+        tolerance        1e-07;
+        relTol           0;
+    }
+}
+
+PIMPLE
+{
+    momentumPredictor   on;
+    nCorrectors         2;
+    nNonOrthogonalCorrectors 0;
+}
+
+relaxationFactors
+{
+    fields
+    {
+    }
+    equations
+    {
+        "h.*"           1;
+        "U.*"           1;
+    }
+}
+
+// ************************************************************************* //