COMP: git merge with master conflict resolution

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;
 };
 
 

src/OSspecific/POSIX/fileMonitor.C

@@ -170,7 +170,9 @@ namespace Foam
                         << "inotify instances" << endl
                         << "    (/proc/sys/fs/inotify/max_user_instances"
                         << " on Linux)" << endl
-                        << "    or switch off runTimeModifiable." << endl
+                        << "    , switch off runTimeModifiable." << endl
+                        << "    or compile this file with FOAM_USE_STAT to use"
+                        << " time stamps instead of inotify." << endl
                         << "    Continuing without additional file monitoring."
                         << endl;
                 }

src/OpenFOAM/db/functionObjects/OutputFilterFunctionObject/OutputFilterFunctionObject.C

@@ -128,7 +128,10 @@ bool Foam::OutputFilterFunctionObject<OutputFilter>::start()
 
 
 template<class OutputFilter>
-bool Foam::OutputFilterFunctionObject<OutputFilter>::execute()
+bool Foam::OutputFilterFunctionObject<OutputFilter>::execute
+(
+    const bool forceWrite
+)
 {
     if (enabled_)
     {
@@ -139,7 +142,7 @@ bool Foam::OutputFilterFunctionObject<OutputFilter>::execute()
 
         ptr_->execute();
 
-        if (outputControl_.output())
+        if (forceWrite || outputControl_.output())
         {
             ptr_->write();
         }

src/OpenFOAM/db/functionObjects/OutputFilterFunctionObject/OutputFilterFunctionObject.H

@@ -183,7 +183,7 @@ public:
             virtual bool start();
 
             //- Called at each ++ or += of the time-loop
-            virtual bool execute();
+            virtual bool execute(const bool forceWrite);
 
             //- Called when Time::run() determines that the time-loop exits
             virtual bool end();

src/OpenFOAM/db/functionObjects/functionObject/functionObject.C

@@ -112,7 +112,7 @@ const Foam::word& Foam::functionObject::name() const
 
 bool Foam::functionObject::end()
 {
-    return execute();
+    return execute(false);
 }
 
 

src/OpenFOAM/db/functionObjects/functionObject/functionObject.H

@@ -147,8 +147,9 @@ public:
         //- Called at the start of the time-loop
         virtual bool start() = 0;
 
-        //- Called at each ++ or += of the time-loop
-        virtual bool execute() = 0;
+        //- Called at each ++ or += of the time-loop. forceWrite overrides the
+        //  outputControl behaviour.
+        virtual bool execute(const bool forceWrite) = 0;
 
         //- Called when Time::run() determines that the time-loop exits.
         //  By default it simply calls execute().

src/OpenFOAM/db/functionObjects/functionObjectList/functionObjectList.C

@@ -144,7 +144,7 @@ bool Foam::functionObjectList::start()
 }
 
 
-bool Foam::functionObjectList::execute()
+bool Foam::functionObjectList::execute(const bool forceWrite)
 {
     bool ok = true;
 
@@ -157,7 +157,7 @@ bool Foam::functionObjectList::execute()
 
         forAll(*this, objectI)
         {
-            ok = operator[](objectI).execute() && ok;
+            ok = operator[](objectI).execute(forceWrite) && ok;
         }
     }
 

src/OpenFOAM/db/functionObjects/functionObjectList/functionObjectList.H

@@ -153,8 +153,10 @@ public:
         //- Called at the start of the time-loop
         virtual bool start();
 
-        //- Called at each ++ or += of the time-loop
-        virtual bool execute();
+        //- Called at each ++ or += of the time-loop. forceWrite overrides
+        //  the usual outputControl behaviour and forces writing always
+        //  (used in postprocessing mode)
+        virtual bool execute(const bool forceWrite = false);
 
         //- Called when Time::run() determines that the time-loop exits
         virtual bool end();

src/finiteVolume/Make/files

@@ -287,6 +287,7 @@ $(ddtSchemes)/steadyStateDdtScheme/steadyStateDdtSchemes.C
 $(ddtSchemes)/EulerDdtScheme/EulerDdtSchemes.C
 $(ddtSchemes)/CoEulerDdtScheme/CoEulerDdtSchemes.C
 $(ddtSchemes)/SLTSDdtScheme/SLTSDdtSchemes.C
+$(ddtSchemes)/localEulerDdtScheme/localEulerDdtSchemes.C
 $(ddtSchemes)/backwardDdtScheme/backwardDdtSchemes.C
 $(ddtSchemes)/boundedBackwardDdtScheme/boundedBackwardDdtScheme.C
 $(ddtSchemes)/boundedBackwardDdtScheme/boundedBackwardDdtSchemes.C

src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.C

@@ -0,0 +1,584 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  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 "localEulerDdtScheme.H"
+#include "surfaceInterpolate.H"
+#include "fvMatrices.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace fv
+{
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+template<class Type>
+const volScalarField& localEulerDdtScheme<Type>::localRDeltaT() const
+{
+    return mesh().objectRegistry::lookupObject<volScalarField>(rDeltaTName_);
+}
+
+
+template<class Type>
+tmp<GeometricField<Type, fvPatchField, volMesh> >
+localEulerDdtScheme<Type>::fvcDdt
+(
+    const dimensioned<Type>& dt
+)
+{
+    const volScalarField& rDeltaT = localRDeltaT();
+
+    IOobject ddtIOobject
+    (
+        "ddt(" + dt.name() + ')',
+        mesh().time().timeName(),
+        mesh()
+    );
+
+    if (mesh().moving())
+    {
+        tmp<GeometricField<Type, fvPatchField, volMesh> > tdtdt
+        (
+            new GeometricField<Type, fvPatchField, volMesh>
+            (
+                ddtIOobject,
+                mesh(),
+                dimensioned<Type>
+                (
+                    "0",
+                    dt.dimensions()/dimTime,
+                    pTraits<Type>::zero
+                )
+            )
+        );
+
+        tdtdt().internalField() =
+            rDeltaT.internalField()*dt.value()*(1.0 - mesh().V0()/mesh().V());
+
+        return tdtdt;
+    }
+    else
+    {
+        return tmp<GeometricField<Type, fvPatchField, volMesh> >
+        (
+            new GeometricField<Type, fvPatchField, volMesh>
+            (
+                ddtIOobject,
+                mesh(),
+                dimensioned<Type>
+                (
+                    "0",
+                    dt.dimensions()/dimTime,
+                    pTraits<Type>::zero
+                ),
+                calculatedFvPatchField<Type>::typeName
+            )
+        );
+    }
+}
+
+
+template<class Type>
+tmp<GeometricField<Type, fvPatchField, volMesh> >
+localEulerDdtScheme<Type>::fvcDdt
+(
+    const GeometricField<Type, fvPatchField, volMesh>& vf
+)
+{
+    const volScalarField& rDeltaT = localRDeltaT();
+
+    IOobject ddtIOobject
+    (
+        "ddt(" + vf.name() + ')',
+        mesh().time().timeName(),
+        mesh()
+    );
+
+    if (mesh().moving())
+    {
+        return tmp<GeometricField<Type, fvPatchField, volMesh> >
+        (
+            new GeometricField<Type, fvPatchField, volMesh>
+            (
+                ddtIOobject,
+                mesh(),
+                rDeltaT.dimensions()*vf.dimensions(),
+                rDeltaT.internalField()*
+                (
+                    vf.internalField()
+                  - vf.oldTime().internalField()*mesh().V0()/mesh().V()
+                ),
+                rDeltaT.boundaryField()*
+                (
+                    vf.boundaryField() - vf.oldTime().boundaryField()
+                )
+            )
+        );
+    }
+    else
+    {
+        return tmp<GeometricField<Type, fvPatchField, volMesh> >
+        (
+            new GeometricField<Type, fvPatchField, volMesh>
+            (
+                ddtIOobject,
+                rDeltaT*(vf - vf.oldTime())
+            )
+        );
+    }
+}
+
+
+template<class Type>
+tmp<GeometricField<Type, fvPatchField, volMesh> >
+localEulerDdtScheme<Type>::fvcDdt
+(
+    const dimensionedScalar& rho,
+    const GeometricField<Type, fvPatchField, volMesh>& vf
+)
+{
+    const volScalarField& rDeltaT = localRDeltaT();
+
+    IOobject ddtIOobject
+    (
+        "ddt(" + rho.name() + ',' + vf.name() + ')',
+        mesh().time().timeName(),
+        mesh()
+    );
+
+    if (mesh().moving())
+    {
+        return tmp<GeometricField<Type, fvPatchField, volMesh> >
+        (
+            new GeometricField<Type, fvPatchField, volMesh>
+            (
+                ddtIOobject,
+                mesh(),
+                rDeltaT.dimensions()*rho.dimensions()*vf.dimensions(),
+                rDeltaT.internalField()*rho.value()*
+                (
+                    vf.internalField()
+                  - vf.oldTime().internalField()*mesh().V0()/mesh().V()
+                ),
+                rDeltaT.boundaryField()*rho.value()*
+                (
+                    vf.boundaryField() - vf.oldTime().boundaryField()
+                )
+            )
+        );
+    }
+    else
+    {
+        return tmp<GeometricField<Type, fvPatchField, volMesh> >
+        (
+            new GeometricField<Type, fvPatchField, volMesh>
+            (
+                ddtIOobject,
+                rDeltaT*rho*(vf - vf.oldTime())
+            )
+        );
+    }
+}
+
+
+template<class Type>
+tmp<GeometricField<Type, fvPatchField, volMesh> >
+localEulerDdtScheme<Type>::fvcDdt
+(
+    const volScalarField& rho,
+    const GeometricField<Type, fvPatchField, volMesh>& vf
+)
+{
+    const volScalarField& rDeltaT = localRDeltaT();
+
+    IOobject ddtIOobject
+    (
+        "ddt(" + rho.name() + ',' + vf.name() + ')',
+        mesh().time().timeName(),
+        mesh()
+    );
+
+    if (mesh().moving())
+    {
+        return tmp<GeometricField<Type, fvPatchField, volMesh> >
+        (
+            new GeometricField<Type, fvPatchField, volMesh>
+            (
+                ddtIOobject,
+                mesh(),
+                rDeltaT.dimensions()*rho.dimensions()*vf.dimensions(),
+                rDeltaT.internalField()*
+                (
+                    rho.internalField()*vf.internalField()
+                  - rho.oldTime().internalField()
+                   *vf.oldTime().internalField()*mesh().V0()/mesh().V()
+                ),
+                rDeltaT.boundaryField()*
+                (
+                    rho.boundaryField()*vf.boundaryField()
+                  - rho.oldTime().boundaryField()
+                   *vf.oldTime().boundaryField()
+                )
+            )
+        );
+    }
+    else
+    {
+        return tmp<GeometricField<Type, fvPatchField, volMesh> >
+        (
+            new GeometricField<Type, fvPatchField, volMesh>
+            (
+                ddtIOobject,
+                rDeltaT*(rho*vf - rho.oldTime()*vf.oldTime())
+            )
+        );
+    }
+}
+
+
+template<class Type>
+tmp<fvMatrix<Type> >
+localEulerDdtScheme<Type>::fvmDdt
+(
+    const GeometricField<Type, fvPatchField, volMesh>& vf
+)
+{
+    tmp<fvMatrix<Type> > tfvm
+    (
+        new fvMatrix<Type>
+        (
+            vf,
+            vf.dimensions()*dimVol/dimTime
+        )
+    );
+
+    fvMatrix<Type>& fvm = tfvm();
+
+    const scalarField& rDeltaT = localRDeltaT().internalField();
+
+    fvm.diag() = rDeltaT*mesh().V();
+
+    if (mesh().moving())
+    {
+        fvm.source() = rDeltaT*vf.oldTime().internalField()*mesh().V0();
+    }
+    else
+    {
+        fvm.source() = rDeltaT*vf.oldTime().internalField()*mesh().V();
+    }
+
+    return tfvm;
+}
+
+
+template<class Type>
+tmp<fvMatrix<Type> >
+localEulerDdtScheme<Type>::fvmDdt
+(
+    const dimensionedScalar& rho,
+    const GeometricField<Type, fvPatchField, volMesh>& vf
+)
+{
+    tmp<fvMatrix<Type> > tfvm
+    (
+        new fvMatrix<Type>
+        (
+            vf,
+            rho.dimensions()*vf.dimensions()*dimVol/dimTime
+        )
+    );
+    fvMatrix<Type>& fvm = tfvm();
+
+    const scalarField& rDeltaT = localRDeltaT().internalField();
+
+    fvm.diag() = rDeltaT*rho.value()*mesh().V();
+
+    if (mesh().moving())
+    {
+        fvm.source() = rDeltaT
+            *rho.value()*vf.oldTime().internalField()*mesh().V0();
+    }
+    else
+    {
+        fvm.source() = rDeltaT
+            *rho.value()*vf.oldTime().internalField()*mesh().V();
+    }
+
+    return tfvm;
+}
+
+
+template<class Type>
+tmp<fvMatrix<Type> >
+localEulerDdtScheme<Type>::fvmDdt
+(
+    const volScalarField& rho,
+    const GeometricField<Type, fvPatchField, volMesh>& vf
+)
+{
+    tmp<fvMatrix<Type> > tfvm
+    (
+        new fvMatrix<Type>
+        (
+            vf,
+            rho.dimensions()*vf.dimensions()*dimVol/dimTime
+        )
+    );
+    fvMatrix<Type>& fvm = tfvm();
+
+    const scalarField& rDeltaT = localRDeltaT().internalField();
+
+    fvm.diag() = rDeltaT*rho.internalField()*mesh().V();
+
+    if (mesh().moving())
+    {
+        fvm.source() = rDeltaT
+            *rho.oldTime().internalField()
+            *vf.oldTime().internalField()*mesh().V0();
+    }
+    else
+    {
+        fvm.source() = rDeltaT
+            *rho.oldTime().internalField()
+            *vf.oldTime().internalField()*mesh().V();
+    }
+
+    return tfvm;
+}
+
+
+template<class Type>
+tmp<typename localEulerDdtScheme<Type>::fluxFieldType>
+localEulerDdtScheme<Type>::fvcDdtPhiCorr
+(
+    const volScalarField& rA,
+    const GeometricField<Type, fvPatchField, volMesh>& U,
+    const fluxFieldType& phi
+)
+{
+    IOobject ddtIOobject
+    (
+        "ddtPhiCorr(" + rA.name() + ',' + U.name() + ',' + phi.name() + ')',
+        mesh().time().timeName(),
+        mesh()
+    );
+
+    if (mesh().moving())
+    {
+        return tmp<fluxFieldType>
+        (
+            new fluxFieldType
+            (
+                ddtIOobject,
+                mesh(),
+                dimensioned<typename flux<Type>::type>
+                (
+                    "0",
+                    rA.dimensions()*phi.dimensions()/dimTime,
+                    pTraits<typename flux<Type>::type>::zero
+                )
+            )
+        );
+    }
+    else
+    {
+        const volScalarField& rDeltaT = localRDeltaT();
+
+        return tmp<fluxFieldType>
+        (
+            new fluxFieldType
+            (
+                ddtIOobject,
+                fvcDdtPhiCoeff(U.oldTime(), phi.oldTime())*
+                (
+                    fvc::interpolate(rDeltaT*rA)*phi.oldTime()
+                  - (fvc::interpolate(rDeltaT*rA*U.oldTime()) & mesh().Sf())
+                )
+            )
+        );
+    }
+}
+
+
+template<class Type>
+tmp<typename localEulerDdtScheme<Type>::fluxFieldType>
+localEulerDdtScheme<Type>::fvcDdtPhiCorr
+(
+    const volScalarField& rA,
+    const volScalarField& rho,
+    const GeometricField<Type, fvPatchField, volMesh>& U,
+    const fluxFieldType& phi
+)
+{
+    IOobject ddtIOobject
+    (
+        "ddtPhiCorr("
+      + rA.name() + ',' + rho.name() + ',' + U.name() + ',' + phi.name() + ')',
+        mesh().time().timeName(),
+        mesh()
+    );
+
+    if (mesh().moving())
+    {
+        return tmp<fluxFieldType>
+        (
+            new fluxFieldType
+            (
+                ddtIOobject,
+                mesh(),
+                dimensioned<typename flux<Type>::type>
+                (
+                    "0",
+                    rA.dimensions()*rho.dimensions()*phi.dimensions()/dimTime,
+                    pTraits<typename flux<Type>::type>::zero
+                )
+            )
+        );
+    }
+    else
+    {
+        const volScalarField& rDeltaT = localRDeltaT();
+
+        if
+        (
+            U.dimensions() == dimVelocity
+         && phi.dimensions() == dimVelocity*dimArea
+        )
+        {
+            return tmp<fluxFieldType>
+            (
+                new fluxFieldType
+                (
+                    ddtIOobject,
+                    fvcDdtPhiCoeff(U.oldTime(), phi.oldTime())
+                   *(
+                        fvc::interpolate(rDeltaT*rA*rho.oldTime())*phi.oldTime()
+                      - (fvc::interpolate(rDeltaT*rA*rho.oldTime()*U.oldTime())
+                      & mesh().Sf())
+                    )
+                )
+            );
+        }
+        else if
+        (
+            U.dimensions() == dimVelocity
+         && phi.dimensions() == dimDensity*dimVelocity*dimArea
+        )
+        {
+            return tmp<fluxFieldType>
+            (
+                new fluxFieldType
+                (
+                    ddtIOobject,
+                    fvcDdtPhiCoeff
+                    (
+                        U.oldTime(),
+                        phi.oldTime()/fvc::interpolate(rho.oldTime())
+                    )
+                   *(
+                        fvc::interpolate(rDeltaT*rA*rho.oldTime())
+                       *phi.oldTime()/fvc::interpolate(rho.oldTime())
+                      - (
+                            fvc::interpolate
+                            (
+                                rDeltaT*rA*rho.oldTime()*U.oldTime()
+                            ) & mesh().Sf()
+                        )
+                    )
+                )
+            );
+        }
+        else if
+        (
+            U.dimensions() == dimDensity*dimVelocity
+         && phi.dimensions() == dimDensity*dimVelocity*dimArea
+        )
+        {
+            return tmp<fluxFieldType>
+            (
+                new fluxFieldType
+                (
+                    ddtIOobject,
+                    fvcDdtPhiCoeff(rho.oldTime(), U.oldTime(), phi.oldTime())
+                   *(
+                        fvc::interpolate(rDeltaT*rA)*phi.oldTime()
+                      - (
+                            fvc::interpolate(rDeltaT*rA*U.oldTime())&mesh().Sf()
+                        )
+                    )
+                )
+            );
+        }
+        else
+        {
+            FatalErrorIn
+            (
+                "localEulerDdtScheme<Type>::fvcDdtPhiCorr"
+            )   << "dimensions of phi are not correct"
+                << abort(FatalError);
+
+            return fluxFieldType::null();
+        }
+    }
+}
+
+
+template<class Type>
+tmp<surfaceScalarField> localEulerDdtScheme<Type>::meshPhi
+(
+    const GeometricField<Type, fvPatchField, volMesh>&
+)
+{
+    return tmp<surfaceScalarField>
+    (
+        new surfaceScalarField
+        (
+            IOobject
+            (
+                "meshPhi",
+                mesh().time().timeName(),
+                mesh()
+            ),
+            mesh(),
+            dimensionedScalar("0", dimVolume/dimTime, 0.0)
+        )
+    );
+}
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace fv
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// ************************************************************************* //

src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtScheme.H

@@ -0,0 +1,210 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  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/>.
+
+Class
+    Foam::fv::localEulerDdtScheme
+
+Description
+    Local time-step first-order Euler implicit/explicit ddt.
+    The reciprocal of the local time-step field is looked-up from the
+    database with the name provided.
+
+    This scheme should only be used for steady-state computations
+    using transient codes where local time-stepping is preferably to
+    under-relaxation for transport consistency reasons.
+
+    See also CoEulerDdtScheme.
+
+SourceFiles
+    localEulerDdtScheme.C
+    localEulerDdtSchemes.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef localEulerDdtScheme_H
+#define localEulerDdtScheme_H
+
+#include "ddtScheme.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace fv
+{
+
+/*---------------------------------------------------------------------------*\
+                       Class localEulerDdtScheme Declaration
+\*---------------------------------------------------------------------------*/
+
+template<class Type>
+class localEulerDdtScheme
+:
+    public fv::ddtScheme<Type>
+{
+    // Private Data
+
+        //- Name of the reciprocal local time-step field
+        word rDeltaTName_;
+
+
+    // Private Member Functions
+
+        //- Disallow default bitwise copy construct
+        localEulerDdtScheme(const localEulerDdtScheme&);
+
+        //- Disallow default bitwise assignment
+        void operator=(const localEulerDdtScheme&);
+
+        //- Return the reciprocal of the local time-step
+        const volScalarField& localRDeltaT() const;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("localEuler");
+
+
+    // Constructors
+
+        //- Construct from mesh and Istream
+        localEulerDdtScheme(const fvMesh& mesh, Istream& is)
+        :
+            ddtScheme<Type>(mesh, is),
+            rDeltaTName_(is)
+        {}
+
+
+    // Member Functions
+
+        //- Return mesh reference
+        const fvMesh& mesh() const
+        {
+            return fv::ddtScheme<Type>::mesh();
+        }
+
+        tmp<GeometricField<Type, fvPatchField, volMesh> > fvcDdt
+        (
+            const dimensioned<Type>&
+        );
+
+        tmp<GeometricField<Type, fvPatchField, volMesh> > fvcDdt
+        (
+            const GeometricField<Type, fvPatchField, volMesh>&
+        );
+
+        tmp<GeometricField<Type, fvPatchField, volMesh> > fvcDdt
+        (
+            const dimensionedScalar&,
+            const GeometricField<Type, fvPatchField, volMesh>&
+        );
+
+        tmp<GeometricField<Type, fvPatchField, volMesh> > fvcDdt
+        (
+            const volScalarField&,
+            const GeometricField<Type, fvPatchField, volMesh>&
+        );
+
+        tmp<fvMatrix<Type> > fvmDdt
+        (
+            const GeometricField<Type, fvPatchField, volMesh>&
+        );
+
+        tmp<fvMatrix<Type> > fvmDdt
+        (
+            const dimensionedScalar&,
+            const GeometricField<Type, fvPatchField, volMesh>&
+        );
+
+        tmp<fvMatrix<Type> > fvmDdt
+        (
+            const volScalarField&,
+            const GeometricField<Type, fvPatchField, volMesh>&
+        );
+
+        typedef typename ddtScheme<Type>::fluxFieldType fluxFieldType;
+
+        tmp<fluxFieldType> fvcDdtPhiCorr
+        (
+            const volScalarField& rA,
+            const GeometricField<Type, fvPatchField, volMesh>& U,
+            const fluxFieldType& phi
+        );
+
+        tmp<fluxFieldType> fvcDdtPhiCorr
+        (
+            const volScalarField& rA,
+            const volScalarField& rho,
+            const GeometricField<Type, fvPatchField, volMesh>& U,
+            const fluxFieldType& phi
+        );
+
+        tmp<surfaceScalarField> meshPhi
+        (
+            const GeometricField<Type, fvPatchField, volMesh>&
+        );
+};
+
+
+template<>
+tmp<surfaceScalarField> localEulerDdtScheme<scalar>::fvcDdtPhiCorr
+(
+    const volScalarField& rA,
+    const volScalarField& U,
+    const surfaceScalarField& phi
+);
+
+
+template<>
+tmp<surfaceScalarField> localEulerDdtScheme<scalar>::fvcDdtPhiCorr
+(
+    const volScalarField& rA,
+    const volScalarField& rho,
+    const volScalarField& U,
+    const surfaceScalarField& phi
+);
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace fv
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#ifdef NoRepository
+#   include "localEulerDdtScheme.C"
+#endif
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

src/finiteVolume/finiteVolume/ddtSchemes/localEulerDdtScheme/localEulerDdtSchemes.C

@@ -0,0 +1,39 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  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 "localEulerDdtScheme.H"
+#include "fvMesh.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace fv
+{
+    makeFvDdtScheme(localEulerDdtScheme)
+}
+}
+
+// ************************************************************************* //

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])
             );
         }
     }

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

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
 

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
 

src/postProcessing/functionObjects/field/streamLine/streamLine.C

@@ -53,16 +53,10 @@ void Foam::streamLine::track()
         initialParticles
     );
 
-    //Pout<< "Seeding particles." << endl;
-
     const sampledSet& seedPoints = sampledSetPtr_();
 
     forAll(seedPoints, i)
     {
-        //Pout<< "Seeded particle at " << seedPoints[i]
-        //    << " at cell:" << seedPoints.cells()[i]
-        //    << endl;
-
         particles.addParticle
         (
             new streamLineParticle
@@ -228,6 +222,7 @@ void Foam::streamLine::track()
         vvInterp,
         UIndex,         // index of U in vvInterp
         trackForward_,  // track in +u direction
+        nSubCycle_,     // step through cells in steps?
         allTracks_,
         allScalars_,
         allVectors_
@@ -299,6 +294,19 @@ void Foam::streamLine::read(const dictionary& dict)
         UName_ = dict.lookupOrDefault<word>("U", "U");
         dict.lookup("trackForward") >> trackForward_;
         dict.lookup("lifeTime") >> lifeTime_;
+        if (lifeTime_ < 1)
+        {
+            FatalErrorIn(":streamLine::read(const dictionary&)")
+                << "Illegal value " << lifeTime_ << " for lifeTime"
+                << exit(FatalError);
+        }
+
+        dict.lookup("nSubCycle") >> nSubCycle_;
+        if (nSubCycle_ < 1)
+        {
+            nSubCycle_ = 1;
+        }
+
         cloudName_ = dict.lookupOrDefault<word>("cloudName", "streamLine");
         dict.lookup("seedSampleSet") >> seedSet_;
 
@@ -326,7 +334,6 @@ void Foam::streamLine::execute()
 {
 //    const Time& runTime = const_cast<Time&>(obr_.time());
 //    Pout<< "**streamLine::execute : time:" << runTime.timeName() << endl;
-//    Pout<< "**streamLine::execute : time:" << runTime.timeIndex() << endl;
 //
 //    bool isOutputTime = false;
 //

src/postProcessing/functionObjects/field/streamLine/streamLine.H

@@ -92,6 +92,9 @@ class streamLine
         //- Maximum lifetime (= number of cells) of particle
         label lifeTime_;
 
+        //- Number of subcycling steps
+        label nSubCycle_;
+
         //- Optional specified name of particles
         word cloudName_;
 

src/postProcessing/functionObjects/field/streamLine/streamLineParticle.C

@@ -36,6 +36,24 @@ namespace Foam
 
 // * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
+// Estimate dt to cross cell in a few steps
+Foam::scalar Foam::streamLineParticle::calcSubCycleDeltaT
+(
+    streamLineParticle::trackData& td,
+    const scalar dt,
+    const vector& U
+) const
+{
+    streamLineParticle testParticle(*this);
+    bool oldKeepParticle = td.keepParticle;
+    bool oldSwitchProcessor = td.switchProcessor;
+    scalar fraction = testParticle.trackToFace(position()+dt*U, td);
+    td.keepParticle = oldKeepParticle;
+    td.switchProcessor = oldSwitchProcessor;
+    // Adapt the dt to subdivide the trajectory into 4 substeps.
+    return dt *fraction/td.nSubCycle_;
+}
+
 Foam::vector Foam::streamLineParticle::interpolateFields
 (
     const streamLineParticle::trackData& td,
@@ -171,34 +189,56 @@ bool Foam::streamLineParticle::move
     && lifeTime_ > 0
     )
     {
-        // TBD: implement subcycling so step through cells in more than
-        //      one step.
-
         // set the lagrangian time-step
         scalar dt = min(dtMax, tEnd);
 
-        // Store current position and sampled velocity.
-        --lifeTime_;
-        sampledPositions_.append(position());
-        vector U = interpolateFields(td, position(), cell());
-
-        if (!td.trackForward_)
+        // Cross cell in steps
+        for (label subIter = 0; subIter < td.nSubCycle_; subIter++)
         {
-            U = -U;
-        }
+            --lifeTime_;
 
-        dt *= trackToFace(position()+dt*U, td);
+            // Store current position and sampled velocity.
+            sampledPositions_.append(position());
+            vector U = interpolateFields(td, position(), cell());
 
-        tEnd -= dt;
-        stepFraction() = 1.0 - tEnd/trackTime;
+            if (!td.trackForward_)
+            {
+                U = -U;
+            }
 
-        if (tEnd <= ROOTVSMALL)
-        {
-            // Force removal
-            lifeTime_ = 0;
+
+            if (subIter == 0 && td.nSubCycle_ > 1)
+            {
+                // Adapt dt to cross cell in a few steps
+                dt = calcSubCycleDeltaT(td, dt, U);
+            }
+            else if (subIter == td.nSubCycle_-1)
+            {
+                // Do full step on last subcycle
+                dt = min(dtMax, tEnd);
+            }
+
+
+            scalar fraction = trackToFace(position()+dt*U, td);
+            dt *= fraction;
+
+            tEnd -= dt;
+            stepFraction() = 1.0 - tEnd/deltaT;
+
+            if (tEnd <= ROOTVSMALL)
+            {
+                // Force removal
+                lifeTime_ = 0;
+            }
+
+            if (!td.keepParticle || td.switchProcessor || lifeTime_ == 0)
+            {
+                break;
+            }
         }
     }
 
+
     if (!td.keepParticle || lifeTime_ == 0)
     {
         if (lifeTime_ == 0)

src/postProcessing/functionObjects/field/streamLine/streamLineParticle.H

@@ -72,6 +72,7 @@ public:
         const PtrList<interpolationCellPoint<vector> >& vvInterp_;
         const label UIndex_;
         const bool trackForward_;
+        const label nSubCycle_;
 
         DynamicList<vectorList>& allPositions_;
         List<DynamicList<scalarList> >& allScalars_;
@@ -87,6 +88,7 @@ public:
                 const PtrList<interpolationCellPoint<vector> >& vvInterp,
                 const label UIndex,
                 const bool trackForward,
+                const label nSubCycle,
                 DynamicList<List<point> >& allPositions,
                 List<DynamicList<scalarList> >& allScalars,
                 List<DynamicList<vectorList> >& allVectors
@@ -97,6 +99,7 @@ public:
                 vvInterp_(vvInterp),
                 UIndex_(UIndex),
                 trackForward_(trackForward),
+                nSubCycle_(nSubCycle),
                 allPositions_(allPositions),
                 allScalars_(allScalars),
                 allVectors_(allVectors)
@@ -123,6 +126,15 @@ private:
 
     // Private Member Functions
 
+        //- Estimate dt to cross from current face to next one in nSubCycle
+        //  steps.
+        scalar calcSubCycleDeltaT
+        (
+            streamLineParticle::trackData& td,
+            const scalar dt,
+            const vector& U
+        ) const;
+
         //- Interpolate all quantities; return interpolated velocity.
         vector interpolateFields
         (