Created a runnable tutorial out of the iglooWithFridges case to demonstrate the buoyantBoussinesqSimpleFoam code.

tutorials/mesh/snappyHexMesh/iglooWithFridges/0/T

@@ -0,0 +1,48 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  1.5                                   |
+|   \\  /    A nd           | Web:      http://www.OpenFOAM.org               |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volScalarField;
+    object      T;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 0 0 1 0 0 0];
+
+internalField   uniform 265;
+
+boundaryField
+{
+    ground
+    {
+        type            fixedValue;
+        value           uniform 265;
+    }
+
+    igloo_region0
+    {
+        type            fixedValue;
+        value           uniform 265;
+    }
+
+    twoFridgeFreezers_seal_0
+    {
+        type            fixedValue;
+        value           uniform 303;
+    }
+
+    twoFridgeFreezers_herring_1
+    {
+        type            fixedValue;
+        value           uniform 303;
+    }
+}
+
+// ************************************************************************* //

tutorials/mesh/snappyHexMesh/iglooWithFridges/0/U

@@ -0,0 +1,48 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  1.5                                   |
+|   \\  /    A nd           | Web:      http://www.OpenFOAM.org               |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volVectorField;
+    object      U;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 1 -1 0 0 0 0];
+
+internalField   uniform (0 0 0);
+
+boundaryField
+{
+    ground
+    {
+        type            fixedValue;
+        value           uniform (0 0 0);
+    }
+
+    igloo_region0
+    {
+        type            fixedValue;
+        value           uniform (0 0 0);
+    }
+
+    twoFridgeFreezers_seal_0
+    {
+        type            fixedValue;
+        value           uniform (0 0 0);
+    }
+
+    twoFridgeFreezers_herring_1
+    {
+        type            fixedValue;
+        value           uniform (0 0 0);
+    }
+}
+
+// ************************************************************************* //

tutorials/mesh/snappyHexMesh/iglooWithFridges/0/alphat

@@ -0,0 +1,50 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  1.5                                   |
+|   \\  /    A nd           | Web:      http://www.OpenFOAM.org               |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volScalarField;
+    location    "0";
+    object      alphat;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [1 -1 -1 0 0 0 0];
+
+internalField   uniform 0;
+
+boundaryField
+{
+    ground
+    {
+        type            alphatWallFunction;
+        value           uniform 0;
+    }
+
+    igloo_region0
+    {
+        type            alphatWallFunction;
+        value           uniform 0;
+    }
+
+    twoFridgeFreezers_seal_0
+    {
+        type            alphatWallFunction;
+        value           uniform 0;
+    }
+
+    twoFridgeFreezers_herring_1
+    {
+        type            alphatWallFunction;
+        value           uniform 0;
+    }
+}
+
+
+// ************************************************************************* //

tutorials/mesh/snappyHexMesh/iglooWithFridges/0/epsilon

@@ -0,0 +1,50 @@
+/*--------------------------------*- 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       volScalarField;
+    location    "0";
+    object      epsilon;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 2 -3 0 0 0 0];
+
+internalField   uniform 0.01;
+
+boundaryField
+{
+    ground
+    {
+        type            epsilonWallFunction;
+        value           uniform 0.01;
+    }
+
+    igloo_region0
+    {
+        type            epsilonWallFunction;
+        value           uniform 0.01;
+    }
+
+    twoFridgeFreezers_seal_0
+    {
+        type            epsilonWallFunction;
+        value           uniform 0.01;
+    }
+
+    twoFridgeFreezers_herring_1
+    {
+        type            epsilonWallFunction;
+        value           uniform 0.01;
+    }
+}
+
+
+// ************************************************************************* //

tutorials/mesh/snappyHexMesh/iglooWithFridges/0/k

@@ -0,0 +1,50 @@
+/*--------------------------------*- 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       volScalarField;
+    location    "0";
+    object      k;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 2 -2 0 0 0 0];
+
+internalField   uniform 0.1;
+
+boundaryField
+{
+    ground
+    {
+        type            kQRWallFunction;
+        value           uniform 0.1;
+    }
+
+    igloo_region0
+    {
+        type            kQRWallFunction;
+        value           uniform 0.1;
+    }
+
+    twoFridgeFreezers_seal_0
+    {
+        type            kQRWallFunction;
+        value           uniform 0.1;
+    }
+
+    twoFridgeFreezers_herring_1
+    {
+        type            kQRWallFunction;
+        value           uniform 0.1;
+    }
+}
+
+
+// ************************************************************************* //

tutorials/mesh/snappyHexMesh/iglooWithFridges/0/nut

@@ -0,0 +1,50 @@
+/*--------------------------------*- 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       volScalarField;
+    location    "0";
+    object      nut;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 2 -1 0 0 0 0];
+
+internalField   uniform 0;
+
+boundaryField
+{
+    ground
+    {
+        type            nutWallFunction;
+        value           uniform 0;
+    }
+
+    igloo_region0
+    {
+        type            nutWallFunction;
+        value           uniform 0;
+    }
+
+    twoFridgeFreezers_seal_0
+    {
+        type            nutWallFunction;
+        value           uniform 0;
+    }
+
+    twoFridgeFreezers_herring_1
+    {
+        type            nutWallFunction;
+        value           uniform 0;
+    }
+}
+
+
+// ************************************************************************* //

tutorials/mesh/snappyHexMesh/iglooWithFridges/0/p

@@ -0,0 +1,52 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  1.5                                   |
+|   \\  /    A nd           | Web:      http://www.OpenFOAM.org               |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volScalarField;
+    object      p;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 2 -2 0 0 0 0];
+
+internalField   uniform 0;
+
+boundaryField
+{
+    ground
+    {
+        type            fixedFluxBuoyantPressure;
+        rho             rhok;
+        value           uniform 0;
+    }
+
+    igloo_region0
+    {
+        type            fixedFluxBuoyantPressure;
+        rho             rhok;
+        value           uniform 0;
+    }
+
+    twoFridgeFreezers_seal_0
+    {
+        type            fixedFluxBuoyantPressure;
+        rho             rhok;
+        value           uniform 0;
+    }
+
+    twoFridgeFreezers_herring_1
+    {
+        type            fixedFluxBuoyantPressure;
+        rho             rhok;
+        value           uniform 0;
+    }
+}
+
+// ************************************************************************* //

tutorials/mesh/snappyHexMesh/iglooWithFridges/Allrun

@@ -0,0 +1,9 @@
+#!/bin/sh
+# Source tutorial run functions
+. $WM_PROJECT_DIR/bin/tools/RunFunctions
+
+runApplication blockMesh
+runApplication snappyHexMesh -overwrite
+runApplication setFields
+runApplication buoyantBoussinesqSimpleFoam
+

tutorials/mesh/snappyHexMesh/iglooWithFridges/constant/RASProperties

@@ -0,0 +1,100 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  1.5                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      RASProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+RASModel        kEpsilon;
+
+turbulence      on;
+
+printCoeffs     on;
+
+laminarCoeffs
+{
+}
+
+kEpsilonCoeffs
+{
+    Cmu             0.09;
+    C1              1.44;
+    C2              1.92;
+    C3              0.85;
+    alphah          1;
+    alphak          1;
+    alphaEps        0.76923;
+}
+
+RNGkEpsilonCoeffs
+{
+    Cmu             0.0845;
+    C1              1.42;
+    C2              1.68;
+    C3              -0.33;
+    alphah          1;
+    alphak          1.39;
+    alphaEps        1.39;
+    eta0            4.38;
+    beta            0.012;
+}
+
+LaunderSharmaKECoeffs
+{
+    Cmu             0.09;
+    C1              1.44;
+    C2              1.92;
+    C3              -0.33;
+    alphah          1;
+    alphak          1;
+    alphaEps        0.76923;
+}
+
+LRRCoeffs
+{
+    Cmu             0.09;
+    Clrr1           1.8;
+    Clrr2           0.6;
+    C1              1.44;
+    C2              1.92;
+    alphah          1;
+    Cs              0.25;
+    Ceps            0.15;
+    alphaR          1;
+    alphaEps        0.76923;
+}
+
+LaunderGibsonRSTMCoeffs
+{
+    Cmu             0.09;
+    Clg1            1.8;
+    Clg2            0.6;
+    C1              1.44;
+    C2              1.92;
+    alphah          1;
+    C1Ref           0.5;
+    C2Ref           0.3;
+    Cs              0.25;
+    Ceps            0.15;
+    alphaR          1;
+    alphaEps        0.76923;
+}
+
+wallFunctionCoeffs
+{
+    kappa           0.4187;
+    E               9;
+}
+
+
+// ************************************************************************* //

tutorials/mesh/snappyHexMesh/iglooWithFridges/constant/environmentalProperties

@@ -0,0 +1,20 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  1.5                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      environmentalProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+g               g [0 1 -2 0 0 0 0] (0 0 -9.81);
+
+// ************************************************************************* //

tutorials/mesh/snappyHexMesh/iglooWithFridges/constant/polyMesh/blockMeshDict

@@ -40,27 +40,32 @@ edges
 
 patches
 (
-    patch maxY
+    empty maxY
     (
         (3 7 6 2)
     )
-    patch minX
+
+    empty minX
     (
         (0 4 7 3)
     )
-    patch maxX
+
+    empty maxX
     (
         (2 6 5 1)
     )
-    patch minY
+
+    empty minY
     (
         (1 5 4 0)
     )
-    patch minZ
+
+    wall ground
     (
         (0 3 2 1)
     )
-    patch maxZ
+
+    empty maxZ
     (
         (4 5 6 7)
     )

tutorials/mesh/snappyHexMesh/iglooWithFridges/constant/transportProperties

@@ -0,0 +1,42 @@
+/*---------------------------------------------------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  1.5.x                                 |
+|   \\  /    A nd           | Web:      http://www.openfoam.org               |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+
+FoamFile
+{
+    version         2.0;
+    format          ascii;
+
+    root            "";
+    case            "";
+    instance        "";
+    local           "";
+
+    class           dictionary;
+    object          transportProperties;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+transportModel Newtonian;
+
+// Laminar viscosity
+nu              nu [0 2 -1 0 0 0 0] 1e-05;
+
+// Thermal expansion coefficient
+beta            beta [0 0 0 -1 0 0 0] 3e-03;
+
+// Reference temperature
+TRef            TRef [0 0 0 1 0 0 0] 300;
+
+// Laminar Prandtl number
+Pr              Pr [0 0 0 0 0 0 0] 0.9;
+
+// Turbulent Prandtl number
+Prt             Prt [0 0 0 0 0 0 0] 0.7;
+
+// ************************************************************************* //

tutorials/mesh/snappyHexMesh/iglooWithFridges/system/controlDict

@@ -15,25 +15,25 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-startFrom       latestTime;
+startFrom       startTime;
 
 startTime       0;
 
 stopAt          endTime;
 
-endTime         100;
+endTime         1000;
 
 deltaT          1;
 
 writeControl    timeStep;
 
-writeInterval   1;
+writeInterval   100;
 
 purgeWrite      0;
 
 writeFormat     ascii;
 
-writePrecision  7;
+writePrecision  6;
 
 writeCompression uncompressed;
 

tutorials/mesh/snappyHexMesh/iglooWithFridges/system/fvSchemes

@@ -17,33 +17,40 @@ FoamFile
 
 ddtSchemes
 {
-    default         Euler;
+    default         steadyState;
 }
 
 gradSchemes
 {
     default         Gauss linear;
-    grad(p)         Gauss linear;
 }
 
 divSchemes
 {
     default         none;
-    div(phi,U)      Gauss linear;
+    div(phi,U)      Gauss upwind;
+    div(phi,T)      Gauss upwind;
+    div(phi,k)      Gauss upwind;
+    div(phi,epsilon) Gauss upwind;
+    div(phi,R)      Gauss upwind;
+    div(R)          Gauss linear;
+    div((nuEff*dev(grad(U).T()))) Gauss linear;
 }
 
 laplacianSchemes
 {
     default         none;
-    laplacian(nu,U) Gauss linear corrected;
+    laplacian(nuEff,U) Gauss linear corrected;
-    laplacian(1|A(U),p) Gauss linear corrected;
+    laplacian((1|A(U)),p) Gauss linear corrected;
-    laplacian(diffusivity,cellMotionU) Gauss linear uncorrected;
+    laplacian(kappaEff,T) Gauss linear corrected;
+    laplacian(DkEff,k) Gauss linear corrected;
+    laplacian(DepsilonEff,epsilon) Gauss linear corrected;
+    laplacian(DREff,R) Gauss linear corrected;
 }
 
 interpolationSchemes
 {
     default         linear;
-    interpolate(HbyA) linear;
 }
 
 snGradSchemes

tutorials/mesh/snappyHexMesh/iglooWithFridges/system/fvSolution

@@ -16,15 +16,73 @@ FoamFile
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 solvers
-{}
-
-PISO
 {
-    nCorrectors     2;
+    p
+    {
+        solver          PCG;
+        preconditioner  DIC;
+        tolerance       1e-08;
+        relTol          0.01;
+    }
+
+    U
+    {
+        solver          PBiCG;
+        preconditioner  DILU;
+        tolerance       1e-05;
+        relTol          0.1;
+    }
+
+    T
+    {
+        solver          PBiCG;
+        preconditioner  DILU;
+        tolerance       1e-05;
+        relTol          0.1;
+    }
+
+    k
+    {
+        solver          PBiCG;
+        preconditioner  DILU;
+        tolerance       1e-05;
+        relTol          0.1;
+    }
+
+    epsilon
+    {
+        solver          PBiCG;
+        preconditioner  DILU;
+        tolerance       1e-05;
+        relTol          0.1;
+    }
+
+    R
+    {
+        solver          PBiCG;
+        preconditioner  DILU;
+        tolerance       1e-05;
+        relTol          0.1;
+    }
+}
+
+SIMPLE
+{
     nNonOrthogonalCorrectors 0;
     pRefCell        0;
     pRefValue       0;
 }
 
+relaxationFactors
+{
+    rho             1;
+    p               0.3;
+    U               0.7;
+    T               0.7;
+    k               0.7;
+    epsilon         0.7;
+    R               0.7;
+}
+
 
 // ************************************************************************* //

tutorials/mesh/snappyHexMesh/iglooWithFridges/system/snappyHexMeshDict

@@ -42,12 +42,13 @@ geometry
         min (0 0 0);
         max (1 1 1);
     }
+
     fridgeFreezer
     {
         type searchableSurfaceCollection;
 
         mergeSubRegions true;
-    
+
         freezer
         {
             surface box1;
@@ -73,12 +74,13 @@ geometry
             }
         }
     }
+
     twoFridgeFreezers
     {
         type searchableSurfaceCollection;
-    
+
         mergeSubRegions true;
-    
+
         seal
         {
             surface fridgeFreezer;