From 78ee5c8c6c85fde1ffe9f5197007506826b3336d Mon Sep 17 00:00:00 2001
From: graham <g.macpherson@opencfd.co.uk>
Date: Fri, 22 Oct 2010 12:42:32 +0100
Subject: [PATCH 1/6] ENH: libgenericPatchFields for subsetMesh.

---
 .../utilities/mesh/manipulation/subsetMesh/Make/options        | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/applications/utilities/mesh/manipulation/subsetMesh/Make/options b/applications/utilities/mesh/manipulation/subsetMesh/Make/options
index d27c95d033..969020c4af 100644
--- a/applications/utilities/mesh/manipulation/subsetMesh/Make/options
+++ b/applications/utilities/mesh/manipulation/subsetMesh/Make/options
@@ -4,4 +4,5 @@ EXE_INC = \
 
 EXE_LIBS = \
     -lfiniteVolume \
-    -lmeshTools
+    -lmeshTools \
+    -lgenericPatchFields

From a67a967d9ac3a2066d06740f2924ccab8c9b7751 Mon Sep 17 00:00:00 2001
From: Henry <Henry>
Date: Mon, 25 Oct 2010 17:49:04 +0100
Subject: [PATCH 2/6] finiteVolume: Added fvcSmooth which provides field
 smoothing operations: smooth, sweep and spread

---
 src/finiteVolume/Make/files                   |   1 +
 .../finiteVolume/fvc/fvcSmooth/fvcSmooth.C    | 318 ++++++++++++++++++
 .../finiteVolume/fvc/fvcSmooth/fvcSmooth.H    |  73 ++++
 .../finiteVolume/fvc/fvcSmooth/smoothData.H   | 204 +++++++++++
 .../finiteVolume/fvc/fvcSmooth/smoothDataI.H  | 192 +++++++++++
 .../finiteVolume/fvc/fvcSmooth/sweepData.H    | 205 +++++++++++
 .../finiteVolume/fvc/fvcSmooth/sweepDataI.H   | 208 ++++++++++++
 7 files changed, 1201 insertions(+)
 create mode 100644 src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.C
 create mode 100644 src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.H
 create mode 100644 src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothData.H
 create mode 100644 src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothDataI.H
 create mode 100644 src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepData.H
 create mode 100644 src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepDataI.H

diff --git a/src/finiteVolume/Make/files b/src/finiteVolume/Make/files
index 21b90fa409..dc325c1ddf 100644
--- a/src/finiteVolume/Make/files
+++ b/src/finiteVolume/Make/files
@@ -337,6 +337,7 @@ $(laplacianSchemes)/laplacianScheme/laplacianSchemes.C
 $(laplacianSchemes)/gaussLaplacianScheme/gaussLaplacianSchemes.C
 
 finiteVolume/fvc/fvcMeshPhi.C
+finiteVolume/fvc/fvcSmooth/fvcSmooth.C
 
 general = cfdTools/general
 $(general)/findRefCell/findRefCell.C
diff --git a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.C b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.C
new file mode 100644
index 0000000000..c04d16dcc9
--- /dev/null
+++ b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.C
@@ -0,0 +1,318 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2010-2010 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "fvcSmooth.H"
+#include "volFields.H"
+#include "FaceCellWave.H"
+#include "smoothData.H"
+#include "sweepData.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+Foam::scalar Foam::smoothData::maxRatio = 1.0;
+
+void Foam::fvc::smooth
+(
+    volScalarField& field,
+    const scalar coeff
+)
+{
+    const fvMesh& mesh = field.mesh();
+    smoothData::maxRatio = 1 + coeff;
+
+    DynamicList<label> changedFaces(mesh.nFaces()/100 + 100);
+    DynamicList<smoothData> changedFacesInfo(changedFaces.size());
+
+    const unallocLabelList& owner = mesh.owner();
+    const unallocLabelList& neighbour = mesh.neighbour();
+
+    forAll(owner, facei)
+    {
+        const label own = owner[facei];
+        const label nbr = neighbour[facei];
+
+        // Check if owner value much larger than neighbour value or vice versa
+        if (field[own] > smoothData::maxRatio*field[nbr])
+        {
+            changedFaces.append(facei);
+            changedFacesInfo.append(smoothData(field[own]));
+        }
+        else if (field[nbr] > smoothData::maxRatio*field[own])
+        {
+            changedFaces.append(facei);
+            changedFacesInfo.append(smoothData(field[nbr]));
+        }
+    }
+
+    // Insert all faces of coupled patches - FaceCellWave will correct them
+    forAll(mesh.boundaryMesh(), patchi)
+    {
+        const polyPatch& patch = mesh.boundaryMesh()[patchi];
+
+        if (patch.coupled())
+        {
+            forAll(patch, patchFacei)
+            {
+                label facei = patch.start() + patchFacei;
+                label own = mesh.faceOwner()[facei];
+
+                changedFaces.append(facei);
+                changedFacesInfo.append(smoothData(field[own]));
+            }
+        }
+    }
+
+    changedFaces.shrink();
+    changedFacesInfo.shrink();
+
+    // Set initial field on cells
+    List<smoothData> cellData(mesh.nCells());
+
+    forAll(field, celli)
+    {
+        cellData[celli] = field[celli];
+    }
+
+    // Set initial field on faces
+    List<smoothData> faceData(mesh.nFaces());
+
+
+    // Propagate information over whole domain
+    FaceCellWave<smoothData > smoothData
+    (
+        mesh,
+        changedFaces,
+        changedFacesInfo,
+        faceData,
+        cellData,
+        mesh.globalData().nTotalCells()    // max iterations
+    );
+
+    forAll(field, celli)
+    {
+        field[celli] = cellData[celli].value();
+    }
+
+    field.correctBoundaryConditions();
+}
+
+
+void Foam::fvc::spread
+(
+    volScalarField& field,
+    const volScalarField& alpha,
+    const label nLayers
+)
+{
+    const fvMesh& mesh = field.mesh();
+    smoothData::maxRatio = 1;
+
+    DynamicList<label> changedFaces(mesh.nFaces()/100 + 100);
+    DynamicList<smoothData> changedFacesInfo(changedFaces.size());
+
+    // Set initial field on cells
+    List<smoothData> cellData(mesh.nCells());
+
+    forAll(field, celli)
+    {
+        cellData[celli] = field[celli];
+    }
+
+    // Set initial field on faces
+    List<smoothData> faceData(mesh.nFaces());
+
+    const unallocLabelList& owner = mesh.owner();
+    const unallocLabelList& neighbour = mesh.neighbour();
+
+    forAll(owner, facei)
+    {
+        const label own = owner[facei];
+        const label nbr = neighbour[facei];
+
+        if
+        (
+            (alpha[own] > 0.01 && alpha[own] < 0.99)
+         || (alpha[nbr] > 0.01 && alpha[nbr] < 0.99)
+        )
+        {
+            if (mag(alpha[own] - alpha[nbr]) > 0.2)
+            {
+                changedFaces.append(facei);
+                changedFacesInfo.append
+                (
+                    smoothData(max(field[own], field[nbr]))
+                );
+            }
+        }
+    }
+
+    // Insert all faces of coupled patches - FaceCellWave will correct them
+    forAll(mesh.boundaryMesh(), patchi)
+    {
+        const polyPatch& patch = mesh.boundaryMesh()[patchi];
+
+        if (patch.coupled())
+        {
+            forAll(patch, patchFacei)
+            {
+                label facei = patch.start() + patchFacei;
+                label own = mesh.faceOwner()[facei];
+
+                scalarField alphapn =
+                    alpha.boundaryField()[patchi].patchNeighbourField();
+
+                if
+                (
+                    (alpha[own] > 0.01 && alpha[own] < 0.99)
+                 || (alphapn[patchFacei] > 0.01 && alphapn[patchFacei] < 0.99)
+                )
+                {
+                    if (mag(alpha[own] - alphapn[patchFacei]) > 0.2)
+                    {
+                        changedFaces.append(facei);
+                        changedFacesInfo.append(smoothData(field[own]));
+                    }
+                }
+            }
+        }
+    }
+
+    changedFaces.shrink();
+    changedFacesInfo.shrink();
+
+    // Propagate information over whole domain
+    FaceCellWave<smoothData> smoothData
+    (
+        mesh,
+        faceData,
+        cellData
+    );
+
+    smoothData.setFaceInfo(changedFaces, changedFacesInfo);
+
+    smoothData.iterate(nLayers);
+
+    forAll(field, celli)
+    {
+        field[celli] = cellData[celli].value();
+    }
+
+    field.correctBoundaryConditions();
+}
+
+
+void Foam::fvc::sweep
+(
+    volScalarField& field,
+    const volScalarField& alpha,
+    const label nLayers
+)
+{
+    const fvMesh& mesh = field.mesh();
+
+    DynamicList<label> changedFaces(mesh.nFaces()/100 + 100);
+    DynamicList<sweepData> changedFacesInfo(changedFaces.size());
+
+    // Set initial field on cells
+    List<sweepData> cellData(mesh.nCells());
+
+    // Set initial field on faces
+    List<sweepData> faceData(mesh.nFaces());
+
+    const unallocLabelList& owner = mesh.owner();
+    const unallocLabelList& neighbour = mesh.neighbour();
+    const vectorField& Cf = mesh.faceCentres();
+
+    forAll(owner, facei)
+    {
+        const label own = owner[facei];
+        const label nbr = neighbour[facei];
+
+        if (mag(alpha[own] - alpha[nbr]) > 0.2)
+        {
+            changedFaces.append(facei);
+            changedFacesInfo.append
+            (
+                sweepData(max(field[own], field[nbr]),
+                Cf[facei])
+            );
+        }
+    }
+
+    // Insert all faces of coupled patches - FaceCellWave will correct them
+    forAll(mesh.boundaryMesh(), patchi)
+    {
+        const polyPatch& patch = mesh.boundaryMesh()[patchi];
+
+        if (patch.coupled())
+        {
+            forAll(patch, patchFacei)
+            {
+                label facei = patch.start() + patchFacei;
+                label own = mesh.faceOwner()[facei];
+
+                scalarField alphapn =
+                    alpha.boundaryField()[patchi].patchNeighbourField();
+
+                if (mag(alpha[own] - alphapn[patchFacei]) > 0.2)
+                {
+                    changedFaces.append(facei);
+                    changedFacesInfo.append
+                    (
+                        sweepData(field[own], Cf[facei])
+                    );
+                }
+            }
+        }
+    }
+
+    changedFaces.shrink();
+    changedFacesInfo.shrink();
+
+    // Propagate information over whole domain
+    FaceCellWave<sweepData> sweepData
+    (
+        mesh,
+        faceData,
+        cellData
+    );
+
+    sweepData.setFaceInfo(changedFaces, changedFacesInfo);
+
+    sweepData.iterate(nLayers);
+
+    forAll(field, celli)
+    {
+        if (cellData[celli].valid())
+        {
+            field[celli] = max(field[celli], cellData[celli].value());
+        }
+    }
+
+    field.correctBoundaryConditions();
+}
+
+
+// ************************************************************************* //
diff --git a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.H b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.H
new file mode 100644
index 0000000000..ced147e3dc
--- /dev/null
+++ b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.H
@@ -0,0 +1,73 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2010-2010 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+function
+    Foam::fvc::smooth
+
+Description
+    Function that uses smoothData to apply spatial smoothing of a
+    volume field using the FaceCellWave algorithm
+
+SourceFiles
+    fvcSmooth.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef fvcSmooth_H
+#define fvcSmooth_H
+
+#include "volFieldsFwd.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace fvc
+{
+    void smooth
+    (
+        volScalarField& field,
+        const scalar coeff
+    );
+
+    void spread
+    (
+        volScalarField& field,
+        const volScalarField& alpha,
+        const label nLayers
+    );
+
+    void sweep
+    (
+        volScalarField& field,
+        const volScalarField& alpha,
+        const label nLayers
+    );
+}
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //
diff --git a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothData.H b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothData.H
new file mode 100644
index 0000000000..b55c93a52a
--- /dev/null
+++ b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothData.H
@@ -0,0 +1,204 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2010-2010 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::smoothData
+
+Description
+    Helper class used by the smoothVolField class
+
+Files
+    smoothData.H
+    smoothDataI.H
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef smoothData_H
+#define smoothData_H
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+/*---------------------------------------------------------------------------*\
+                       Class smoothData Declaration
+\*---------------------------------------------------------------------------*/
+
+class smoothData
+{
+    scalar value_;
+
+    // Private Member Functions
+
+        //- Update - gets information from neighbouring face/cell and
+        //  uses this to update itself (if necessary) and return true
+        inline bool update
+        (
+            const smoothData& svf,
+            const scalar scale,
+            const scalar tol
+        );
+
+
+public:
+
+    // Static data members
+
+        //- Field fraction
+        static scalar maxRatio;
+
+
+    // Constructors
+
+        //- Construct null
+        inline smoothData();
+
+        //- Construct from inverse field value
+        inline smoothData(const scalar value);
+
+
+    // Member Functions
+
+        // Access
+
+            //- Return value
+            scalar value() const
+            {
+                return value_;
+            }
+
+
+        // Needed by FaceCellWave
+
+            //- Check whether origin has been changed at all or
+            //  still contains original (invalid) value
+            inline bool valid() const;
+
+            //- Check for identical geometrical data
+            //  Used for cyclics checking
+            inline bool sameGeometry
+            (
+                const polyMesh&,
+                const smoothData&,
+                const scalar
+            ) const;
+
+            //- Convert any absolute coordinates into relative to
+            //  (patch)face centre
+            inline void leaveDomain
+            (
+                const polyMesh&,
+                const polyPatch&,
+                const label patchFaceI,
+                const point& faceCentre
+            );
+
+            //- Reverse of leaveDomain
+            inline void enterDomain
+            (
+                const polyMesh&,
+                const polyPatch&,
+                const label patchFaceI,
+                const point& faceCentre
+            );
+
+            //- Apply rotation matrix to any coordinates
+            inline void transform
+            (
+                const polyMesh&,
+                const tensor&
+            );
+
+            //- Influence of neighbouring face
+            inline bool updateCell
+            (
+                const polyMesh&,
+                const label thisCellI,
+                const label neighbourFaceI,
+                const smoothData& svf,
+                const scalar tol
+            );
+
+            //- Influence of neighbouring cell
+            inline bool updateFace
+            (
+                const polyMesh&,
+                const label thisFaceI,
+                const label neighbourCellI,
+                const smoothData& svf,
+                const scalar tol
+            );
+
+            //- Influence of different value on same face
+            inline bool updateFace
+            (
+                const polyMesh&,
+                const label thisFaceI,
+                const smoothData& svf,
+                const scalar tol
+            );
+
+
+        // Member Operators
+
+            inline void operator=(const scalar value);
+
+            // Needed for List IO
+            inline bool operator==(const smoothData&) const;
+
+            inline bool operator!=(const smoothData&) const;
+
+
+        // IOstream Operators
+
+            friend Ostream& operator<<
+            (
+                Ostream& os,
+                const smoothData& svf
+            )
+            {
+                return os  << svf.value_;
+            }
+
+            friend Istream& operator>>(Istream& is, smoothData& svf)
+            {
+                return is  >> svf.value_;
+            }
+};
+
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#include "smoothDataI.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //
diff --git a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothDataI.H b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothDataI.H
new file mode 100644
index 0000000000..3faaa694b6
--- /dev/null
+++ b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothDataI.H
@@ -0,0 +1,192 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2010-2010 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+inline bool Foam::smoothData::update
+(
+    const smoothData::smoothData& svf,
+    const scalar scale,
+    const scalar tol
+)
+{
+    if (!valid() || (value_ < VSMALL))
+    {
+        // My value not set - take over neighbour
+        value_ = svf.value()/scale;
+
+        // Something changed - let caller know
+        return true;
+    }
+    else if (svf.value() > (1 + tol)*scale*value_)
+    {
+        // Neighbour is too big for me - Up my value
+        value_ = svf.value()/scale;
+
+        // Something changed - let caller know
+        return true;
+    }
+    else
+    {
+        // Neighbour is not too big for me or change is too small
+        // Nothing changed
+        return false;
+    }
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+inline Foam::smoothData::smoothData()
+:
+    value_(-GREAT)
+{}
+
+
+inline Foam::smoothData::smoothData(const scalar value)
+:
+    value_(value)
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+inline bool Foam::smoothData::valid() const
+{
+    return value_ > -SMALL;
+}
+
+
+inline bool Foam::smoothData::sameGeometry
+(
+    const polyMesh&,
+    const smoothData&,
+    const scalar
+) const
+{
+    return true;
+}
+
+
+inline void Foam::smoothData::leaveDomain
+(
+    const polyMesh&,
+    const polyPatch&,
+    const label,
+    const point&
+)
+{}
+
+
+inline void Foam::smoothData::transform
+(
+    const polyMesh&,
+    const tensor&
+)
+{}
+
+
+inline void Foam::smoothData::enterDomain
+(
+    const polyMesh&,
+    const polyPatch&,
+    const label,
+    const point&
+)
+{}
+
+
+inline bool Foam::smoothData::updateCell
+(
+    const polyMesh&,
+    const label,
+    const label,
+    const smoothData& svf,
+    const scalar tol
+)
+{
+    // Take over info from face if more than deltaRatio larger
+    return update(svf, maxRatio, tol);
+}
+
+
+inline bool Foam::smoothData::updateFace
+(
+    const polyMesh&,
+    const label,
+    const label,
+    const smoothData& svf,
+    const scalar tol
+)
+{
+    // Take over information from cell without any scaling (scale = 1.0)
+    return update(svf, 1.0, tol);
+}
+
+
+// Update this (face) with coupled face information.
+inline bool Foam::smoothData::updateFace
+(
+    const polyMesh&,
+    const label,
+    const smoothData& svf,
+    const scalar tol
+)
+{
+    // Take over information from coupled face without any scaling (scale = 1.0)
+    return update(svf, 1.0, tol);
+}
+
+
+// * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //
+
+inline void Foam::smoothData::operator=
+(
+    const scalar value
+)
+{
+    value_ = value;
+}
+
+
+inline bool Foam::smoothData::operator==
+(
+    const smoothData& rhs
+) const
+{
+    return value_ == rhs.value();
+}
+
+
+inline bool Foam::smoothData::operator!=
+(
+    const smoothData& rhs
+) const
+{
+    return !(*this == rhs);
+}
+
+
+// ************************************************************************* //
diff --git a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepData.H b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepData.H
new file mode 100644
index 0000000000..ebee81c0f7
--- /dev/null
+++ b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepData.H
@@ -0,0 +1,205 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2010-2010 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::sweepData
+
+Description
+    Helper class used by fvcSmooth
+
+Files
+    sweepData.H
+    sweepDataI.H
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef sweepData_H
+#define sweepData_H
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+/*---------------------------------------------------------------------------*\
+                       Class sweepData Declaration
+\*---------------------------------------------------------------------------*/
+
+class sweepData
+{
+    scalar value_;
+    point origin_;
+
+    // Private Member Functions
+
+        //- Update - gets information from neighbouring face/cell and
+        //  uses this to update itself (if necessary) and return true
+        inline bool update
+        (
+            const sweepData& svf,
+            const point& position,
+            const scalar tol
+        );
+
+
+public:
+
+    // Constructors
+
+        //- Construct null
+        inline sweepData();
+
+        //- Construct from component
+        inline sweepData(const scalar value, const point& origin);
+
+
+    // Member Functions
+
+        // Access
+
+            //- Return value
+            scalar value() const
+            {
+                return value_;
+            }
+
+            //- Return origin
+            const point& origin() const
+            {
+                return origin_;
+            }
+
+
+        // Needed by FaceCellWave
+
+            //- Check whether origin has been changed at all or
+            //  still contains original (invalid) value
+            inline bool valid() const;
+
+            //- Check for identical geometrical data
+            //  Used for cyclics checking
+            inline bool sameGeometry
+            (
+                const polyMesh&,
+                const sweepData&,
+                const scalar
+            ) const;
+
+            //- Convert any absolute coordinates into relative to
+            //  (patch)face centre
+            inline void leaveDomain
+            (
+                const polyMesh&,
+                const polyPatch&,
+                const label patchFaceI,
+                const point& faceCentre
+            );
+
+            //- Reverse of leaveDomain
+            inline void enterDomain
+            (
+                const polyMesh&,
+                const polyPatch&,
+                const label patchFaceI,
+                const point& faceCentre
+            );
+
+            //- Apply rotation matrix to any coordinates
+            inline void transform
+            (
+                const polyMesh&,
+                const tensor&
+            );
+
+            //- Influence of neighbouring face
+            inline bool updateCell
+            (
+                const polyMesh&,
+                const label thisCellI,
+                const label neighbourFaceI,
+                const sweepData& svf,
+                const scalar tol
+            );
+
+            //- Influence of neighbouring cell
+            inline bool updateFace
+            (
+                const polyMesh&,
+                const label thisFaceI,
+                const label neighbourCellI,
+                const sweepData& svf,
+                const scalar tol
+            );
+
+            //- Influence of different value on same face
+            inline bool updateFace
+            (
+                const polyMesh&,
+                const label thisFaceI,
+                const sweepData& svf,
+                const scalar tol
+            );
+
+
+        // Member Operators
+
+            inline void operator=(const scalar value);
+
+            // Needed for List IO
+            inline bool operator==(const sweepData&) const;
+
+            inline bool operator!=(const sweepData&) const;
+
+
+        // IOstream Operators
+
+            friend Ostream& operator<<
+            (
+                Ostream& os,
+                const sweepData& svf
+            )
+            {
+                return os << svf.value_ << svf.origin_;
+            }
+
+            friend Istream& operator>>(Istream& is, sweepData& svf)
+            {
+                return is >> svf.value_ >> svf.origin_;
+            }
+};
+
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#include "sweepDataI.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //
diff --git a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepDataI.H b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepDataI.H
new file mode 100644
index 0000000000..651c5e4e52
--- /dev/null
+++ b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepDataI.H
@@ -0,0 +1,208 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2010-2010 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "transform.H"
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+inline bool Foam::sweepData::update
+(
+    const sweepData::sweepData& svf,
+    const point& position,
+    const scalar tol
+)
+{
+    if (!valid())
+    {
+        operator=(svf);
+        return true;
+    }
+
+    scalar myDist2 = magSqr(position - origin());
+
+    if (myDist2 < SMALL)
+    {
+        if (svf.value() > value())
+        {
+            operator=(svf);
+            return true;
+        }
+        else
+        {
+            return false;
+        }
+    }
+
+    scalar dist2 = magSqr(position - svf.origin());
+
+    if (dist2 < myDist2)
+    {
+        operator=(svf);
+        return true;
+    }
+
+    return false;
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+inline Foam::sweepData::sweepData()
+:
+    value_(-GREAT),
+    origin_(vector::max)
+{}
+
+
+inline Foam::sweepData::sweepData(const scalar value, const point& origin)
+:
+    value_(value),
+    origin_(origin)
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+inline bool Foam::sweepData::valid() const
+{
+    return value_ > -SMALL;
+}
+
+
+inline bool Foam::sweepData::sameGeometry
+(
+    const polyMesh&,
+    const sweepData&,
+    const scalar
+) const
+{
+    return true;
+}
+
+
+inline void Foam::sweepData::leaveDomain
+(
+    const polyMesh&,
+    const polyPatch&,
+    const label,
+    const point& faceCentre
+)
+{
+    origin_ -= faceCentre;
+}
+
+
+inline void Foam::sweepData::transform
+(
+    const polyMesh&,
+    const tensor& rotTensor
+)
+{
+    origin_ = Foam::transform(rotTensor, origin_);
+}
+
+
+inline void Foam::sweepData::enterDomain
+(
+    const polyMesh&,
+    const polyPatch&,
+    const label,
+    const point& faceCentre
+)
+{
+    // back to absolute form
+    origin_ += faceCentre;
+}
+
+
+inline bool Foam::sweepData::updateCell
+(
+    const polyMesh& mesh,
+    const label thisCellI,
+    const label,
+    const sweepData& svf,
+    const scalar tol
+)
+{
+    return update(svf, mesh.cellCentres()[thisCellI], tol);
+}
+
+
+inline bool Foam::sweepData::updateFace
+(
+    const polyMesh& mesh,
+    const label thisFaceI,
+    const label,
+    const sweepData& svf,
+    const scalar tol
+)
+{
+    return update(svf, mesh.faceCentres()[thisFaceI], tol);
+}
+
+
+// Update this (face) with coupled face information.
+inline bool Foam::sweepData::updateFace
+(
+    const polyMesh& mesh,
+    const label thisFaceI,
+    const sweepData& svf,
+    const scalar tol
+)
+{
+    return update(svf, mesh.faceCentres()[thisFaceI], tol);
+}
+
+
+// * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //
+
+inline void Foam::sweepData::operator=
+(
+    const scalar value
+)
+{
+    value_ = value;
+}
+
+
+inline bool Foam::sweepData::operator==
+(
+    const sweepData& rhs
+) const
+{
+    return origin() == rhs.origin();
+}
+
+
+inline bool Foam::sweepData::operator!=
+(
+    const sweepData& rhs
+) const
+{
+    return !(*this == rhs);
+}
+
+
+// ************************************************************************* //

From 730481aed3e00a66a8a85ecee4643824e42db5fd Mon Sep 17 00:00:00 2001
From: Henry <Henry>
Date: Mon, 25 Oct 2010 17:49:56 +0100
Subject: [PATCH 3/6] LTSInterFoam: Initial version of interFoam supporting
 local time-stepping for acceleration to steady-state

---
 .../solvers/multiphase/interFoam/Allwclean    |   1 +
 .../solvers/multiphase/interFoam/Allwmake     |   1 +
 .../interFoam/LTSInterFoam/LTSInterFoam.C     | 101 +++
 .../multiphase/interFoam/LTSInterFoam/MULES.C |  83 +++
 .../multiphase/interFoam/LTSInterFoam/MULES.H | 136 ++++
 .../interFoam/LTSInterFoam/MULESTemplates.C   | 602 ++++++++++++++++++
 .../interFoam/LTSInterFoam/Make/files         |   4 +
 .../interFoam/LTSInterFoam/Make/options       |  15 +
 .../interFoam/LTSInterFoam/alphaEqn.H         |  36 ++
 .../interFoam/LTSInterFoam/alphaEqnSubCycle.H |  35 +
 .../LTSInterFoam/setInitialrDeltaT.H          |  30 +
 .../interFoam/LTSInterFoam/setrDeltaT.H       | 109 ++++
 12 files changed, 1153 insertions(+)
 create mode 100644 applications/solvers/multiphase/interFoam/LTSInterFoam/LTSInterFoam.C
 create mode 100644 applications/solvers/multiphase/interFoam/LTSInterFoam/MULES.C
 create mode 100644 applications/solvers/multiphase/interFoam/LTSInterFoam/MULES.H
 create mode 100644 applications/solvers/multiphase/interFoam/LTSInterFoam/MULESTemplates.C
 create mode 100644 applications/solvers/multiphase/interFoam/LTSInterFoam/Make/files
 create mode 100644 applications/solvers/multiphase/interFoam/LTSInterFoam/Make/options
 create mode 100644 applications/solvers/multiphase/interFoam/LTSInterFoam/alphaEqn.H
 create mode 100644 applications/solvers/multiphase/interFoam/LTSInterFoam/alphaEqnSubCycle.H
 create mode 100644 applications/solvers/multiphase/interFoam/LTSInterFoam/setInitialrDeltaT.H
 create mode 100644 applications/solvers/multiphase/interFoam/LTSInterFoam/setrDeltaT.H

diff --git a/applications/solvers/multiphase/interFoam/Allwclean b/applications/solvers/multiphase/interFoam/Allwclean
index 350d4b268b..2c54bfa321 100755
--- a/applications/solvers/multiphase/interFoam/Allwclean
+++ b/applications/solvers/multiphase/interFoam/Allwclean
@@ -6,5 +6,6 @@ wclean
 wclean interDyMFoam
 wclean MRFInterFoam
 wclean porousInterFoam
+wclean LTSInterFoam
 
 # ----------------------------------------------------------------- end-of-file
diff --git a/applications/solvers/multiphase/interFoam/Allwmake b/applications/solvers/multiphase/interFoam/Allwmake
index b25e4440e6..8044426582 100755
--- a/applications/solvers/multiphase/interFoam/Allwmake
+++ b/applications/solvers/multiphase/interFoam/Allwmake
@@ -6,5 +6,6 @@ wmake
 wmake interDyMFoam
 wmake MRFInterFoam
 wmake porousInterFoam
+wmake LTSInterFoam
 
 # ----------------------------------------------------------------- end-of-file
diff --git a/applications/solvers/multiphase/interFoam/LTSInterFoam/LTSInterFoam.C b/applications/solvers/multiphase/interFoam/LTSInterFoam/LTSInterFoam.C
new file mode 100644
index 0000000000..9fcb19a7cc
--- /dev/null
+++ b/applications/solvers/multiphase/interFoam/LTSInterFoam/LTSInterFoam.C
@@ -0,0 +1,101 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Application
+    interFoam
+
+Description
+    Solver for 2 incompressible, isothermal immiscible fluids using a VOF
+    (volume of fluid) phase-fraction based interface capturing approach.
+
+    The momentum and other fluid properties are of the "mixture" and a single
+    momentum equation is solved.
+
+    Turbulence modelling is generic, i.e.  laminar, RAS or LES may be selected.
+
+    For a two-fluid approach see twoPhaseEulerFoam.
+
+\*---------------------------------------------------------------------------*/
+
+#include "fvCFD.H"
+#include "MULES.H"
+#include "subCycle.H"
+#include "interfaceProperties.H"
+#include "twoPhaseMixture.H"
+#include "turbulenceModel.H"
+#include "fvcSmooth.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+int main(int argc, char *argv[])
+{
+    #include "setRootCase.H"
+    #include "createTime.H"
+    #include "createMesh.H"
+    #include "readPISOControls.H"
+    #include "initContinuityErrs.H"
+    #include "createFields.H"
+    #include "correctPhi.H"
+    #include "CourantNo.H"
+    #include "setInitialrDeltaT.H"
+
+    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+    Info<< "\nStarting time loop\n" << endl;
+
+    while (runTime.run())
+    {
+        #include "readPISOControls.H"
+
+        runTime++;
+
+        Info<< "Time = " << runTime.timeName() << nl << endl;
+
+        #include "setrDeltaT.H"
+
+        twoPhaseProperties.correct();
+
+        #include "alphaEqnSubCycle.H"
+        turbulence->correct();
+        #include "UEqn.H"
+
+        // --- PISO loop
+        for (int corr=0; corr<nCorr; corr++)
+        {
+            #include "pEqn.H"
+        }
+
+        runTime.write();
+
+        Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
+            << "  ClockTime = " << runTime.elapsedClockTime() << " s"
+            << nl << endl;
+    }
+
+    Info<< "End\n" << endl;
+
+    return 0;
+}
+
+
+// ************************************************************************* //
diff --git a/applications/solvers/multiphase/interFoam/LTSInterFoam/MULES.C b/applications/solvers/multiphase/interFoam/LTSInterFoam/MULES.C
new file mode 100644
index 0000000000..e281ae575c
--- /dev/null
+++ b/applications/solvers/multiphase/interFoam/LTSInterFoam/MULES.C
@@ -0,0 +1,83 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "MULES.H"
+#include "upwind.H"
+#include "uncorrectedSnGrad.H"
+#include "gaussConvectionScheme.H"
+#include "gaussLaplacianScheme.H"
+#include "uncorrectedSnGrad.H"
+#include "surfaceInterpolate.H"
+#include "fvcSurfaceIntegrate.H"
+#include "slicedSurfaceFields.H"
+#include "syncTools.H"
+
+#include "fvCFD.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+void Foam::MULES::explicitLTSSolve
+(
+    volScalarField& psi,
+    const surfaceScalarField& phi,
+    surfaceScalarField& phiPsi,
+    const scalar psiMax,
+    const scalar psiMin
+)
+{
+    explicitLTSSolve
+    (
+        geometricOneField(),
+        psi,
+        phi,
+        phiPsi,
+        zeroField(), zeroField(),
+        psiMax, psiMin
+    );
+}
+
+
+void Foam::MULES::implicitSolve
+(
+    volScalarField& psi,
+    const surfaceScalarField& phi,
+    surfaceScalarField& phiPsi,
+    const scalar psiMax,
+    const scalar psiMin
+)
+{
+    implicitSolve
+    (
+        geometricOneField(),
+        psi,
+        phi,
+        phiPsi,
+        zeroField(), zeroField(),
+        psiMax, psiMin
+    );
+}
+
+
+// ************************************************************************* //
diff --git a/applications/solvers/multiphase/interFoam/LTSInterFoam/MULES.H b/applications/solvers/multiphase/interFoam/LTSInterFoam/MULES.H
new file mode 100644
index 0000000000..729b041aa6
--- /dev/null
+++ b/applications/solvers/multiphase/interFoam/LTSInterFoam/MULES.H
@@ -0,0 +1,136 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Global
+    MULES
+
+Description
+    MULES: Multidimensional universal limiter with explicit solution.
+
+    Solve a convective-only transport equation using an explicit universal
+    multi-dimensional limiter.
+
+    Parameters are the variable to solve, the normal convective flux and the
+    actual explicit flux of the variable which is also used to return limited
+    flux used in the bounded-solution.
+
+SourceFiles
+    MULES.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef MULES_H
+#define MULES_H
+
+#include "volFields.H"
+#include "surfaceFieldsFwd.H"
+#include "primitiveFieldsFwd.H"
+#include "zeroField.H"
+#include "geometricOneField.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace MULES
+{
+
+template<class RhoType, class SpType, class SuType>
+void explicitLTSSolve
+(
+    const RhoType& rho,
+    volScalarField& psi,
+    const surfaceScalarField& phiBD,
+    surfaceScalarField& phiPsi,
+    const SpType& Sp,
+    const SuType& Su,
+    const scalar psiMax,
+    const scalar psiMin
+);
+
+void explicitLTSSolve
+(
+    volScalarField& psi,
+    const surfaceScalarField& phiBD,
+    surfaceScalarField& phiPsi,
+    const scalar psiMax,
+    const scalar psiMin
+);
+
+template<class RhoType, class SpType, class SuType>
+void implicitSolve
+(
+    const RhoType& rho,
+    volScalarField& gamma,
+    const surfaceScalarField& phi,
+    surfaceScalarField& phiCorr,
+    const SpType& Sp,
+    const SuType& Su,
+    const scalar psiMax,
+    const scalar psiMin
+);
+
+void implicitSolve
+(
+    volScalarField& gamma,
+    const surfaceScalarField& phi,
+    surfaceScalarField& phiCorr,
+    const scalar psiMax,
+    const scalar psiMin
+);
+
+template<class RhoType, class SpType, class SuType>
+void limiter
+(
+    scalarField& allLambda,
+    const RhoType& rho,
+    const volScalarField& psi,
+    const surfaceScalarField& phiBD,
+    const surfaceScalarField& phiCorr,
+    const SpType& Sp,
+    const SuType& Su,
+    const scalar psiMax,
+    const scalar psiMin,
+    const label nLimiterIter
+);
+
+} // End namespace MULES
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#ifdef NoRepository
+#   include "MULESTemplates.C"
+#endif
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //
diff --git a/applications/solvers/multiphase/interFoam/LTSInterFoam/MULESTemplates.C b/applications/solvers/multiphase/interFoam/LTSInterFoam/MULESTemplates.C
new file mode 100644
index 0000000000..a6d3a3f6b2
--- /dev/null
+++ b/applications/solvers/multiphase/interFoam/LTSInterFoam/MULESTemplates.C
@@ -0,0 +1,602 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "MULES.H"
+#include "upwind.H"
+#include "uncorrectedSnGrad.H"
+#include "gaussConvectionScheme.H"
+#include "gaussLaplacianScheme.H"
+#include "uncorrectedSnGrad.H"
+#include "surfaceInterpolate.H"
+#include "fvcSurfaceIntegrate.H"
+#include "slicedSurfaceFields.H"
+#include "syncTools.H"
+
+#include "fvCFD.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+template<class RhoType, class SpType, class SuType>
+void Foam::MULES::explicitLTSSolve
+(
+    const RhoType& rho,
+    volScalarField& psi,
+    const surfaceScalarField& phi,
+    surfaceScalarField& phiPsi,
+    const SpType& Sp,
+    const SuType& Su,
+    const scalar psiMax,
+    const scalar psiMin
+)
+{
+    Info<< "MULES: Solving for " << psi.name() << endl;
+
+    const fvMesh& mesh = psi.mesh();
+    psi.correctBoundaryConditions();
+
+    surfaceScalarField phiBD = upwind<scalar>(psi.mesh(), phi).flux(psi);
+
+    surfaceScalarField& phiCorr = phiPsi;
+    phiCorr -= phiBD;
+
+    scalarField allLambda(mesh.nFaces(), 1.0);
+
+    slicedSurfaceScalarField lambda
+    (
+        IOobject
+        (
+            "lambda",
+            mesh.time().timeName(),
+            mesh,
+            IOobject::NO_READ,
+            IOobject::NO_WRITE,
+            false
+        ),
+        mesh,
+        dimless,
+        allLambda,
+        false   // Use slices for the couples
+    );
+
+    limiter
+    (
+        allLambda,
+        rho,
+        psi,
+        phiBD,
+        phiCorr,
+        Sp.field(),
+        Su.field(),
+        psiMax,
+        psiMin,
+        3
+    );
+
+    phiPsi = phiBD + lambda*phiCorr;
+
+    scalarField& psiIf = psi;
+    const scalarField& psi0 = psi.oldTime();
+
+    const volScalarField& rDeltaT =
+        mesh.objectRegistry::lookupObject<volScalarField>("rSubDeltaT");
+
+    psiIf = 0.0;
+    fvc::surfaceIntegrate(psiIf, phiPsi);
+
+    if (mesh.moving())
+    {
+        psiIf =
+        (
+            mesh.Vsc0()*rho.oldTime()*psi0*rDeltaT/mesh.Vsc()
+          + Su.field()
+          - psiIf
+        )/(rho*rDeltaT - Sp.field());
+    }
+    else
+    {
+        psiIf =
+        (
+            rho.oldTime()*psi0*rDeltaT
+          + Su.field()
+          - psiIf
+        )/(rho*rDeltaT - Sp.field());
+    }
+
+    psi.correctBoundaryConditions();
+}
+
+
+template<class RhoType, class SpType, class SuType>
+void Foam::MULES::implicitSolve
+(
+    const RhoType& rho,
+    volScalarField& psi,
+    const surfaceScalarField& phi,
+    surfaceScalarField& phiPsi,
+    const SpType& Sp,
+    const SuType& Su,
+    const scalar psiMax,
+    const scalar psiMin
+)
+{
+    const fvMesh& mesh = psi.mesh();
+
+    const dictionary& MULEScontrols = mesh.solverDict(psi.name());
+
+    label maxIter
+    (
+        readLabel(MULEScontrols.lookup("maxIter"))
+    );
+
+    label nLimiterIter
+    (
+        readLabel(MULEScontrols.lookup("nLimiterIter"))
+    );
+
+    scalar maxUnboundedness
+    (
+        readScalar(MULEScontrols.lookup("maxUnboundedness"))
+    );
+
+    scalar CoCoeff
+    (
+        readScalar(MULEScontrols.lookup("CoCoeff"))
+    );
+
+    scalarField allCoLambda(mesh.nFaces());
+
+    {
+        surfaceScalarField Cof =
+            mesh.time().deltaT()*mesh.surfaceInterpolation::deltaCoeffs()
+           *mag(phi)/mesh.magSf();
+
+        slicedSurfaceScalarField CoLambda
+        (
+            IOobject
+            (
+                "CoLambda",
+                mesh.time().timeName(),
+                mesh,
+                IOobject::NO_READ,
+                IOobject::NO_WRITE,
+                false
+            ),
+            mesh,
+            dimless,
+            allCoLambda,
+            false   // Use slices for the couples
+        );
+
+        CoLambda == 1.0/max(CoCoeff*Cof, scalar(1));
+    }
+
+    scalarField allLambda(allCoLambda);
+    //scalarField allLambda(mesh.nFaces(), 1.0);
+
+    slicedSurfaceScalarField lambda
+    (
+        IOobject
+        (
+            "lambda",
+            mesh.time().timeName(),
+            mesh,
+            IOobject::NO_READ,
+            IOobject::NO_WRITE,
+            false
+        ),
+        mesh,
+        dimless,
+        allLambda,
+        false   // Use slices for the couples
+    );
+
+    linear<scalar> CDs(mesh);
+    upwind<scalar> UDs(mesh, phi);
+    //fv::uncorrectedSnGrad<scalar> snGrads(mesh);
+
+    fvScalarMatrix psiConvectionDiffusion
+    (
+        fvm::ddt(rho, psi)
+      + fv::gaussConvectionScheme<scalar>(mesh, phi, UDs).fvmDiv(phi, psi)
+        //- fv::gaussLaplacianScheme<scalar, scalar>(mesh, CDs, snGrads)
+        //.fvmLaplacian(Dpsif, psi)
+      - fvm::Sp(Sp, psi)
+      - Su
+    );
+
+    surfaceScalarField phiBD = psiConvectionDiffusion.flux();
+
+    surfaceScalarField& phiCorr = phiPsi;
+    phiCorr -= phiBD;
+
+    for (label i=0; i<maxIter; i++)
+    {
+        if (i != 0 && i < 4)
+        {
+            allLambda = allCoLambda;
+        }
+
+        limiter
+        (
+            allLambda,
+            rho,
+            psi,
+            phiBD,
+            phiCorr,
+            Sp.field(),
+            Su.field(),
+            psiMax,
+            psiMin,
+            nLimiterIter
+        );
+
+        solve
+        (
+            psiConvectionDiffusion + fvc::div(lambda*phiCorr),
+            MULEScontrols
+        );
+
+        scalar maxPsiM1 = gMax(psi.internalField()) - 1.0;
+        scalar minPsi = gMin(psi.internalField());
+
+        scalar unboundedness = max(max(maxPsiM1, 0.0), -min(minPsi, 0.0));
+
+        if (unboundedness < maxUnboundedness)
+        {
+            break;
+        }
+        else
+        {
+            Info<< "MULES: max(" << psi.name() << " - 1) = " << maxPsiM1
+                << " min(" << psi.name() << ") = " << minPsi << endl;
+
+            phiBD = psiConvectionDiffusion.flux();
+
+            /*
+            word gammaScheme("div(phi,gamma)");
+            word gammarScheme("div(phirb,gamma)");
+
+            const surfaceScalarField& phir =
+                mesh.lookupObject<surfaceScalarField>("phir");
+
+            phiCorr =
+                fvc::flux
+                (
+                    phi,
+                    psi,
+                    gammaScheme
+                )
+              + fvc::flux
+                (
+                    -fvc::flux(-phir, scalar(1) - psi, gammarScheme),
+                    psi,
+                    gammarScheme
+                )
+                - phiBD;
+            */
+        }
+    }
+
+    phiPsi = psiConvectionDiffusion.flux() + lambda*phiCorr;
+}
+
+
+template<class RhoType, class SpType, class SuType>
+void Foam::MULES::limiter
+(
+    scalarField& allLambda,
+    const RhoType& rho,
+    const volScalarField& psi,
+    const surfaceScalarField& phiBD,
+    const surfaceScalarField& phiCorr,
+    const SpType& Sp,
+    const SuType& Su,
+    const scalar psiMax,
+    const scalar psiMin,
+    const label nLimiterIter
+)
+{
+    const scalarField& psiIf = psi;
+    const volScalarField::GeometricBoundaryField& psiBf = psi.boundaryField();
+
+    const scalarField& psi0 = psi.oldTime();
+
+    const fvMesh& mesh = psi.mesh();
+
+    const unallocLabelList& owner = mesh.owner();
+    const unallocLabelList& neighb = mesh.neighbour();
+    tmp<volScalarField::DimensionedInternalField> tVsc = mesh.Vsc();
+    const scalarField& V = tVsc();
+
+    const volScalarField& rDeltaT =
+        mesh.objectRegistry::lookupObject<volScalarField>("rSubDeltaT");
+
+    const scalarField& phiBDIf = phiBD;
+    const surfaceScalarField::GeometricBoundaryField& phiBDBf =
+        phiBD.boundaryField();
+
+    const scalarField& phiCorrIf = phiCorr;
+    const surfaceScalarField::GeometricBoundaryField& phiCorrBf =
+        phiCorr.boundaryField();
+
+    slicedSurfaceScalarField lambda
+    (
+        IOobject
+        (
+            "lambda",
+            mesh.time().timeName(),
+            mesh,
+            IOobject::NO_READ,
+            IOobject::NO_WRITE,
+            false
+        ),
+        mesh,
+        dimless,
+        allLambda,
+        false   // Use slices for the couples
+    );
+
+    scalarField& lambdaIf = lambda;
+    surfaceScalarField::GeometricBoundaryField& lambdaBf =
+        lambda.boundaryField();
+
+    scalarField psiMaxn(psiIf.size(), psiMin);
+    scalarField psiMinn(psiIf.size(), psiMax);
+
+    scalarField sumPhiBD(psiIf.size(), 0.0);
+
+    scalarField sumPhip(psiIf.size(), VSMALL);
+    scalarField mSumPhim(psiIf.size(), VSMALL);
+
+    forAll(phiCorrIf, facei)
+    {
+        label own = owner[facei];
+        label nei = neighb[facei];
+
+        psiMaxn[own] = max(psiMaxn[own], psiIf[nei]);
+        psiMinn[own] = min(psiMinn[own], psiIf[nei]);
+
+        psiMaxn[nei] = max(psiMaxn[nei], psiIf[own]);
+        psiMinn[nei] = min(psiMinn[nei], psiIf[own]);
+
+        sumPhiBD[own] += phiBDIf[facei];
+        sumPhiBD[nei] -= phiBDIf[facei];
+
+        scalar phiCorrf = phiCorrIf[facei];
+
+        if (phiCorrf > 0.0)
+        {
+            sumPhip[own] += phiCorrf;
+            mSumPhim[nei] += phiCorrf;
+        }
+        else
+        {
+            mSumPhim[own] -= phiCorrf;
+            sumPhip[nei] -= phiCorrf;
+        }
+    }
+
+    forAll(phiCorrBf, patchi)
+    {
+        const fvPatchScalarField& psiPf = psiBf[patchi];
+        const scalarField& phiBDPf = phiBDBf[patchi];
+        const scalarField& phiCorrPf = phiCorrBf[patchi];
+
+        const labelList& pFaceCells = mesh.boundary()[patchi].faceCells();
+
+        if (psiPf.coupled())
+        {
+            scalarField psiPNf = psiPf.patchNeighbourField();
+
+            forAll(phiCorrPf, pFacei)
+            {
+                label pfCelli = pFaceCells[pFacei];
+
+                psiMaxn[pfCelli] = max(psiMaxn[pfCelli], psiPNf[pFacei]);
+                psiMinn[pfCelli] = min(psiMinn[pfCelli], psiPNf[pFacei]);
+            }
+        }
+        else
+        {
+            forAll(phiCorrPf, pFacei)
+            {
+                label pfCelli = pFaceCells[pFacei];
+
+                psiMaxn[pfCelli] = max(psiMaxn[pfCelli], psiPf[pFacei]);
+                psiMinn[pfCelli] = min(psiMinn[pfCelli], psiPf[pFacei]);
+            }
+        }
+
+        forAll(phiCorrPf, pFacei)
+        {
+            label pfCelli = pFaceCells[pFacei];
+
+            sumPhiBD[pfCelli] += phiBDPf[pFacei];
+
+            scalar phiCorrf = phiCorrPf[pFacei];
+
+            if (phiCorrf > 0.0)
+            {
+                sumPhip[pfCelli] += phiCorrf;
+            }
+            else
+            {
+                mSumPhim[pfCelli] -= phiCorrf;
+            }
+        }
+    }
+
+    psiMaxn = min(psiMaxn, psiMax);
+    psiMinn = max(psiMinn, psiMin);
+
+    //scalar smooth = 0.5;
+    //psiMaxn = min((1.0 - smooth)*psiIf + smooth*psiMaxn, psiMax);
+    //psiMinn = max((1.0 - smooth)*psiIf + smooth*psiMinn, psiMin);
+
+    if (mesh.moving())
+    {
+        tmp<volScalarField::DimensionedInternalField> V0 = mesh.Vsc0();
+
+        psiMaxn =
+            V*((rho*rDeltaT - Sp)*psiMaxn - Su)
+          - (V0()*rDeltaT)*rho.oldTime()*psi0
+          + sumPhiBD;
+
+        psiMinn =
+            V*(Su - (rho*rDeltaT - Sp)*psiMinn)
+          + (V0*rDeltaT)*rho.oldTime()*psi0
+          - sumPhiBD;
+    }
+    else
+    {
+        psiMaxn =
+            V*((rho*rDeltaT - Sp)*psiMaxn - (rho.oldTime()*rDeltaT)*psi0 - Su)
+          + sumPhiBD;
+
+        psiMinn =
+            V*((rho*rDeltaT)*psi0 - (rho.oldTime()*rDeltaT - Sp)*psiMinn + Su)
+          - sumPhiBD;
+    }
+
+    scalarField sumlPhip(psiIf.size());
+    scalarField mSumlPhim(psiIf.size());
+
+    for(int j=0; j<nLimiterIter; j++)
+    {
+        sumlPhip = 0.0;
+        mSumlPhim = 0.0;
+
+        forAll(lambdaIf, facei)
+        {
+            label own = owner[facei];
+            label nei = neighb[facei];
+
+            scalar lambdaPhiCorrf = lambdaIf[facei]*phiCorrIf[facei];
+
+            if (lambdaPhiCorrf > 0.0)
+            {
+                sumlPhip[own] += lambdaPhiCorrf;
+                mSumlPhim[nei] += lambdaPhiCorrf;
+            }
+            else
+            {
+                mSumlPhim[own] -= lambdaPhiCorrf;
+                sumlPhip[nei] -= lambdaPhiCorrf;
+            }
+        }
+
+        forAll(lambdaBf, patchi)
+        {
+            scalarField& lambdaPf = lambdaBf[patchi];
+            const scalarField& phiCorrfPf = phiCorrBf[patchi];
+
+            const labelList& pFaceCells = mesh.boundary()[patchi].faceCells();
+
+            forAll(lambdaPf, pFacei)
+            {
+                label pfCelli = pFaceCells[pFacei];
+
+                scalar lambdaPhiCorrf = lambdaPf[pFacei]*phiCorrfPf[pFacei];
+
+                if (lambdaPhiCorrf > 0.0)
+                {
+                    sumlPhip[pfCelli] += lambdaPhiCorrf;
+                }
+                else
+                {
+                    mSumlPhim[pfCelli] -= lambdaPhiCorrf;
+                }
+            }
+        }
+
+        forAll (sumlPhip, celli)
+        {
+            sumlPhip[celli] =
+                max(min
+                (
+                    (sumlPhip[celli] + psiMaxn[celli])/mSumPhim[celli],
+                    1.0), 0.0
+                );
+
+            mSumlPhim[celli] =
+                max(min
+                (
+                    (mSumlPhim[celli] + psiMinn[celli])/sumPhip[celli],
+                    1.0), 0.0
+                );
+        }
+
+        const scalarField& lambdam = sumlPhip;
+        const scalarField& lambdap = mSumlPhim;
+
+        forAll(lambdaIf, facei)
+        {
+            if (phiCorrIf[facei] > 0.0)
+            {
+                lambdaIf[facei] = min
+                (
+                    lambdaIf[facei],
+                    min(lambdap[owner[facei]], lambdam[neighb[facei]])
+                );
+            }
+            else
+            {
+                lambdaIf[facei] = min
+                (
+                    lambdaIf[facei],
+                    min(lambdam[owner[facei]], lambdap[neighb[facei]])
+                );
+            }
+        }
+
+
+        forAll(lambdaBf, patchi)
+        {
+            fvsPatchScalarField& lambdaPf = lambdaBf[patchi];
+            const scalarField& phiCorrfPf = phiCorrBf[patchi];
+
+            const labelList& pFaceCells = mesh.boundary()[patchi].faceCells();
+
+            forAll(lambdaPf, pFacei)
+            {
+                label pfCelli = pFaceCells[pFacei];
+
+                if (phiCorrfPf[pFacei] > 0.0)
+                {
+                    lambdaPf[pFacei] = min(lambdaPf[pFacei], lambdap[pfCelli]);
+                }
+                else
+                {
+                    lambdaPf[pFacei] = min(lambdaPf[pFacei], lambdam[pfCelli]);
+                }
+            }
+        }
+
+        syncTools::syncFaceList(mesh, allLambda, minEqOp<scalar>());
+    }
+}
+
+
+// ************************************************************************* //
diff --git a/applications/solvers/multiphase/interFoam/LTSInterFoam/Make/files b/applications/solvers/multiphase/interFoam/LTSInterFoam/Make/files
new file mode 100644
index 0000000000..205812e978
--- /dev/null
+++ b/applications/solvers/multiphase/interFoam/LTSInterFoam/Make/files
@@ -0,0 +1,4 @@
+LTSInterFoam.C
+MULES.C
+
+EXE = $(FOAM_APPBIN)/LTSInterFoam
diff --git a/applications/solvers/multiphase/interFoam/LTSInterFoam/Make/options b/applications/solvers/multiphase/interFoam/LTSInterFoam/Make/options
new file mode 100644
index 0000000000..24349f694e
--- /dev/null
+++ b/applications/solvers/multiphase/interFoam/LTSInterFoam/Make/options
@@ -0,0 +1,15 @@
+EXE_INC = \
+    -I.. \
+    -I$(LIB_SRC)/transportModels \
+    -I$(LIB_SRC)/transportModels/incompressible/lnInclude \
+    -I$(LIB_SRC)/transportModels/interfaceProperties/lnInclude \
+    -I$(LIB_SRC)/turbulenceModels/incompressible/turbulenceModel \
+    -I$(LIB_SRC)/finiteVolume/lnInclude
+
+EXE_LIBS = \
+    -ltwoPhaseInterfaceProperties \
+    -lincompressibleTransportModels \
+    -lincompressibleTurbulenceModel \
+    -lincompressibleRASModels \
+    -lincompressibleLESModels \
+    -lfiniteVolume
diff --git a/applications/solvers/multiphase/interFoam/LTSInterFoam/alphaEqn.H b/applications/solvers/multiphase/interFoam/LTSInterFoam/alphaEqn.H
new file mode 100644
index 0000000000..a4cb6e7688
--- /dev/null
+++ b/applications/solvers/multiphase/interFoam/LTSInterFoam/alphaEqn.H
@@ -0,0 +1,36 @@
+{
+    word alphaScheme("div(phi,alpha)");
+    word alpharScheme("div(phirb,alpha)");
+
+    surfaceScalarField phic = mag(phi/mesh.magSf());
+    phic = min(interface.cAlpha()*phic, max(phic));
+    surfaceScalarField phir = phic*interface.nHatf();
+
+    for (int aCorr=0; aCorr<nAlphaCorr; aCorr++)
+    {
+        surfaceScalarField phiAlpha =
+            fvc::flux
+            (
+                phi,
+                alpha1,
+                alphaScheme
+            )
+          + fvc::flux
+            (
+                -fvc::flux(-phir, scalar(1) - alpha1, alpharScheme),
+                alpha1,
+                alpharScheme
+            );
+
+        MULES::explicitLTSSolve(alpha1, phi, phiAlpha, 1, 0);
+        //MULES::explicitSolve(alpha1, phi, phiAlpha, 1, 0);
+
+        rhoPhi = phiAlpha*(rho1 - rho2) + phi*rho2;
+    }
+
+    Info<< "Liquid phase volume fraction = "
+        << alpha1.weightedAverage(mesh.V()).value()
+        << "  Min(alpha1) = " << min(alpha1).value()
+        << "  Max(alpha1) = " << max(alpha1).value()
+        << endl;
+}
diff --git a/applications/solvers/multiphase/interFoam/LTSInterFoam/alphaEqnSubCycle.H b/applications/solvers/multiphase/interFoam/LTSInterFoam/alphaEqnSubCycle.H
new file mode 100644
index 0000000000..9aae37a8be
--- /dev/null
+++ b/applications/solvers/multiphase/interFoam/LTSInterFoam/alphaEqnSubCycle.H
@@ -0,0 +1,35 @@
+label nAlphaCorr
+(
+    readLabel(piso.lookup("nAlphaCorr"))
+);
+
+label nAlphaSubCycles
+(
+    readLabel(piso.lookup("nAlphaSubCycles"))
+);
+
+if (nAlphaSubCycles > 1)
+{
+    dimensionedScalar totalDeltaT = runTime.deltaT();
+    surfaceScalarField rhoPhiSum = 0.0*rhoPhi;
+
+    for
+    (
+        subCycle<volScalarField> alphaSubCycle(alpha1, nAlphaSubCycles);
+        !(++alphaSubCycle).end();
+    )
+    {
+#       include "alphaEqn.H"
+        rhoPhiSum += (runTime.deltaT()/totalDeltaT)*rhoPhi;
+    }
+
+    rhoPhi = rhoPhiSum;
+}
+else
+{
+#       include "alphaEqn.H"
+}
+
+interface.correct();
+
+rho == alpha1*rho1 + (scalar(1) - alpha1)*rho2;
diff --git a/applications/solvers/multiphase/interFoam/LTSInterFoam/setInitialrDeltaT.H b/applications/solvers/multiphase/interFoam/LTSInterFoam/setInitialrDeltaT.H
new file mode 100644
index 0000000000..1f2f082fb3
--- /dev/null
+++ b/applications/solvers/multiphase/interFoam/LTSInterFoam/setInitialrDeltaT.H
@@ -0,0 +1,30 @@
+scalar maxDeltaT
+(
+    piso.lookupOrDefault<scalar>("maxDeltaT", GREAT)
+);
+
+volScalarField rDeltaT
+(
+    IOobject
+    (
+        "rDeltaT",
+        runTime.timeName(),
+        mesh,
+        IOobject::NO_READ,
+        IOobject::AUTO_WRITE
+    ),
+    mesh,
+    1/dimensionedScalar("maxDeltaT", dimTime, maxDeltaT)
+);
+
+volScalarField rSubDeltaT
+(
+    IOobject
+    (
+        "rSubDeltaT",
+        runTime.timeName(),
+        mesh
+    ),
+    mesh,
+    1/dimensionedScalar("maxDeltaT", dimTime, maxDeltaT)
+);
diff --git a/applications/solvers/multiphase/interFoam/LTSInterFoam/setrDeltaT.H b/applications/solvers/multiphase/interFoam/LTSInterFoam/setrDeltaT.H
new file mode 100644
index 0000000000..f5b8450ddd
--- /dev/null
+++ b/applications/solvers/multiphase/interFoam/LTSInterFoam/setrDeltaT.H
@@ -0,0 +1,109 @@
+{
+    scalar maxCo
+    (
+        piso.lookupOrDefault<scalar>("maxCo", 0.9)
+    );
+
+    scalar maxAlphaCo
+    (
+        piso.lookupOrDefault<scalar>("maxAlphaCo", 0.2)
+    );
+
+    scalar rDeltaTSmoothingCoeff
+    (
+        piso.lookupOrDefault<scalar>("rDeltaTSmoothingCoeff", 0.1)
+    );
+
+    label nAlphaSpreadIter
+    (
+        piso.lookupOrDefault<label>("nAlphaSpreadIter", 1)
+    );
+
+    label nAlphaSweepIter
+    (
+        piso.lookupOrDefault<label>("nAlphaSweepIter", 5)
+    );
+
+    scalar rDeltaTDampingCoeff
+    (
+        piso.lookupOrDefault<scalar>("rDeltaTDampingCoeff", 1.0)
+    );
+
+    scalar maxDeltaT
+    (
+        piso.lookupOrDefault<scalar>("maxDeltaT", GREAT)
+    );
+
+    volScalarField rDeltaT0 = rDeltaT;
+
+    // Set the reciprocal time-step using an effective maximum Courant number
+    rDeltaT = max
+    (
+        1/dimensionedScalar("maxDeltaT", dimTime, maxDeltaT),
+        fvc::surfaceSum
+        (
+            mag(rhoPhi)*mesh.deltaCoeffs()/(maxCo*mesh.magSf())
+        )/rho
+    );
+
+    // Limit the time-step further in the region of the interface
+    {
+        surfaceScalarField alphaf = fvc::interpolate(alpha1);
+
+        surfaceScalarField SfUfbyDelta =
+            pos(alphaf - 0.01)*pos(0.99 - alphaf)
+           *mesh.surfaceInterpolation::deltaCoeffs()*mag(phi);
+
+        rDeltaT = max
+        (
+            rDeltaT,
+            fvc::surfaceSum(mag(SfUfbyDelta/(maxAlphaCo*mesh.magSf())))
+        );
+    }
+    Info<< "Flow time scale min/max = "
+        << gMin(1/rDeltaT.internalField())
+        << ", " << gMax(1/rDeltaT.internalField()) << endl;
+
+    if (rDeltaTSmoothingCoeff < 1.0)
+    {
+        fvc::smooth(rDeltaT, rDeltaTSmoothingCoeff);
+    }
+
+    if (nAlphaSpreadIter > 0)
+    {
+        fvc::spread(rDeltaT, alpha1, nAlphaSpreadIter);
+    }
+
+    if (nAlphaSweepIter > 0)
+    {
+        fvc::sweep(rDeltaT, alpha1, nAlphaSweepIter);
+    }
+
+    Info<< "Flow time scale min/max = "
+        << gMin(1/rDeltaT.internalField())
+        << ", " << gMax(1/rDeltaT.internalField()) << endl;
+
+    // Limit rate of change of time scale
+    // - reduce as much as required
+    // - only increase at a fraction of old time scale
+    if
+    (
+        rDeltaTDampingCoeff < 1.0
+     && runTime.timeIndex() > runTime.startTimeIndex() + 1
+    )
+    {
+        Info<< "Damping rDeltaT" << endl;
+        rDeltaT = rDeltaT0*max(rDeltaT/rDeltaT0, 1.0 - rDeltaTDampingCoeff);
+    }
+
+    Info<< "Flow time scale min/max = "
+        << gMin(1/rDeltaT.internalField())
+        << ", " << gMax(1/rDeltaT.internalField()) << endl;
+
+    label nAlphaSubCycles
+    (
+        readLabel(piso.lookup("nAlphaSubCycles"))
+    );
+
+    rSubDeltaT = rDeltaT*nAlphaSubCycles;
+}

From 2864fdfd56638e81cab68b2f759ab4ac3ceb12b2 Mon Sep 17 00:00:00 2001
From: Henry <Henry>
Date: Tue, 26 Oct 2010 09:41:41 +0100
Subject: [PATCH 4/6] SIBS: Corrected initial value of SIBS::redMin Resolves
 bug report: http://www.openfoam.com/mantisbt/view.php?id=64

---
 src/ODE/ODESolvers/SIBS/SIBS.C | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/ODE/ODESolvers/SIBS/SIBS.C b/src/ODE/ODESolvers/SIBS/SIBS.C
index 6018af2e14..41f73e78a1 100644
--- a/src/ODE/ODESolvers/SIBS/SIBS.C
+++ b/src/ODE/ODESolvers/SIBS/SIBS.C
@@ -37,8 +37,11 @@ namespace Foam
     const label SIBS::nSeq_[iMaxX_] = {2, 6, 10, 14, 22, 34, 50, 70};
 
     const scalar
-        SIBS::safe1 = 0.25, SIBS::safe2 = 0.7,
-        SIBS::redMax = 1.0e-5, SIBS::redMin = 0.0, SIBS::scaleMX = 0.1;
+        SIBS::safe1 = 0.25,
+        SIBS::safe2 = 0.7,
+        SIBS::redMax = 1.0e-5,
+        SIBS::redMin = 0.7,
+        SIBS::scaleMX = 0.1;
 };
 
 

From 4f8ea8d6afb01604ef208e28b5bce2d56f723439 Mon Sep 17 00:00:00 2001
From: andy <a.heather@opencfd.co.uk>
Date: Tue, 26 Oct 2010 11:53:56 +0100
Subject: [PATCH 5/6] BUG: Incorrect lookup name for alphak

---
 .../solvers/multiphase/bubbleFoam/createRASTurbulence.H         | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/applications/solvers/multiphase/bubbleFoam/createRASTurbulence.H b/applications/solvers/multiphase/bubbleFoam/createRASTurbulence.H
index 049b6c0b36..1ef67b292e 100644
--- a/applications/solvers/multiphase/bubbleFoam/createRASTurbulence.H
+++ b/applications/solvers/multiphase/bubbleFoam/createRASTurbulence.H
@@ -55,7 +55,7 @@
     (
         dimensionedScalar::lookupOrAddToDict
         (
-            "alphaEps",
+            "alphak",
             kEpsilonDict,
             1.0
         )

From f6f45959842334cbf72a13355a64b27a4044ee44 Mon Sep 17 00:00:00 2001
From: Henry <Henry>
Date: Tue, 26 Oct 2010 14:31:17 +0100
Subject: [PATCH 6/6] fvcSmooth: updated documentation

---
 .../finiteVolume/fvc/fvcSmooth/fvcSmooth.C     |  3 +--
 .../finiteVolume/fvc/fvcSmooth/fvcSmooth.H     | 18 ++++++++++++++----
 .../finiteVolume/fvc/fvcSmooth/smoothData.H    |  4 ++--
 .../finiteVolume/fvc/fvcSmooth/sweepData.H     |  4 ++--
 4 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.C b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.C
index c04d16dcc9..47cfb5582a 100644
--- a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.C
+++ b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.C
@@ -255,8 +255,7 @@ void Foam::fvc::sweep
             changedFaces.append(facei);
             changedFacesInfo.append
             (
-                sweepData(max(field[own], field[nbr]),
-                Cf[facei])
+                sweepData(max(field[own], field[nbr]), Cf[facei])
             );
         }
     }
diff --git a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.H b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.H
index ced147e3dc..2ce5b1b5d3 100644
--- a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.H
+++ b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/fvcSmooth.H
@@ -21,12 +21,22 @@ License
     You should have received a copy of the GNU General Public License
     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
-function
-    Foam::fvc::smooth
+InNamespace
+    Foam::fvc
 
 Description
-    Function that uses smoothData to apply spatial smoothing of a
-    volume field using the FaceCellWave algorithm
+    Provides functions smooth spread and sweep which use the FaceCellWave
+    algorithm to smooth and redistribute the first field argument.
+
+    smooth: smooths the field by ensuring the values in neighbouring
+            cells are at least coeff* the cell value.
+
+    spread: redistributes the field by spreading the maximum value within
+            the region defined by the value and gradient of alpha.
+
+    sweep: redistributes the field by sweeping the maximum value where the
+           gradient of alpha is large away from that starting point of the
+           sweep.
 
 SourceFiles
     fvcSmooth.C
diff --git a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothData.H b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothData.H
index b55c93a52a..d027f9f2a2 100644
--- a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothData.H
+++ b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/smoothData.H
@@ -25,9 +25,9 @@ Class
     Foam::smoothData
 
 Description
-    Helper class used by the smoothVolField class
+    Helper class used by the fvc::smooth and fvc::spread functions.
 
-Files
+SourceFiles
     smoothData.H
     smoothDataI.H
 
diff --git a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepData.H b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepData.H
index ebee81c0f7..1bfec88fdf 100644
--- a/src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepData.H
+++ b/src/finiteVolume/finiteVolume/fvc/fvcSmooth/sweepData.H
@@ -25,9 +25,9 @@ Class
     Foam::sweepData
 
 Description
-    Helper class used by fvcSmooth
+    Helper class used by fvc::sweep function.
 
-Files
+SourceFiles
     sweepData.H
     sweepDataI.H