Initial commit

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/SRFSimpleFoam/Make/options

+EXE_INC = \
+    -I.. \
+    -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/meshTools/lnInclude \
+    -I$(LIB_SRC)/sampling/lnInclude \
+    -I$(LIB_SRC)/TurbulenceModels/turbulenceModels/lnInclude \
+    -I$(LIB_SRC)/TurbulenceModels/incompressible/lnInclude \
+    -I$(LIB_SRC)/transportModels \
+    -I$(LIB_SRC)/transportModels/incompressible/singlePhaseTransportModel
+
+EXE_LIBS = \
+    -lfiniteVolume \
+    -lfvOptions \
+    -lmeshTools \
+    -lsampling \
+    -lturbulenceModels \
+    -lincompressibleTurbulenceModels \
+    -lincompressibleTransportModels

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/SRFSimpleFoam/SRFSimpleFoam.C

+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2011-2017 OpenFOAM Foundation
+-------------------------------------------------------------------------------
+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
+    SRFSimpleFoam
+
+Group
+    grpIncompressibleSolvers
+
+Description
+    Steady-state solver for incompressible, turbulent flow of non-Newtonian
+    fluids in a single rotating frame.
+
+\*---------------------------------------------------------------------------*/
+
+#include "fvCFD.H"
+#include "singlePhaseTransportModel.H"
+#include "turbulentTransportModel.H"
+#include "SRFModel.H"
+#include "simpleControl.H"
+#include "fvOptions.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+int main(int argc, char *argv[])
+{
+    argList::addNote
+    (
+        "Steady-state solver for incompressible, turbulent flow"
+        " of non-Newtonian fluids in a single rotating frame."
+    );
+
+    #include "postProcess.H"
+
+    #include "addCheckCaseOptions.H"
+    #include "setRootCaseLists.H"
+    #include "createTime.H"
+    #include "createMesh.H"
+    #include "createControl.H"
+    #include "createFields.H"
+    #include "initContinuityErrs.H"
+
+    turbulence->validate();
+
+    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+    Info<< "\nStarting time loop\n" << endl;
+
+    while (simple.loop())
+    {
+        Info<< "Time = " << runTime.timeName() << nl << endl;
+
+        // --- Pressure-velocity SIMPLE corrector
+        {
+            #include "UrelEqn.H"
+            #include "pEqn.H"
+        }
+
+        U = Urel + SRF->U();
+
+        laminarTransport.correct();
+        turbulence->correct();
+
+        runTime.write();
+
+        runTime.printExecutionTime(Info);
+    }
+
+    Info<< "End\n" << endl;
+
+    return 0;
+}
+
+
+// ************************************************************************* //

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/SRFSimpleFoam/UrelEqn.H

+    // Relative momentum predictor
+
+    tmp<fvVectorMatrix> tUrelEqn
+    (
+        fvm::div(phi, Urel)
+      + turbulence->divDevReff(Urel)
+      + SRF->Su()
+     ==
+        fvOptions(Urel)
+    );
+    fvVectorMatrix& UrelEqn = tUrelEqn.ref();
+
+    UrelEqn.relax();
+
+    fvOptions.constrain(UrelEqn);
+
+    if (simple.momentumPredictor())
+    {
+        solve(UrelEqn == -fvc::grad(p));
+
+        fvOptions.correct(Urel);
+    }

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/SRFSimpleFoam/createFields.H

+Info<< "Reading field p\n" << endl;
+volScalarField p
+(
+    IOobject
+    (
+        "p",
+        runTime.timeName(),
+        mesh,
+        IOobject::MUST_READ,
+        IOobject::AUTO_WRITE
+    ),
+    mesh
+);
+
+Info<< "Reading field Urel\n" << endl;
+volVectorField Urel
+(
+    IOobject
+    (
+        "Urel",
+        runTime.timeName(),
+        mesh,
+        IOobject::MUST_READ,
+        IOobject::AUTO_WRITE
+    ),
+    mesh
+);
+
+Info<< "Reading/calculating face flux field phi\n" << endl;
+surfaceScalarField phi
+(
+    IOobject
+    (
+        "phi",
+        runTime.timeName(),
+        mesh,
+        IOobject::READ_IF_PRESENT,
+        IOobject::AUTO_WRITE
+    ),
+    linearInterpolate(Urel) & mesh.Sf()
+);
+
+label pRefCell = 0;
+scalar pRefValue = 0.0;
+setRefCell(p, simple.dict(), pRefCell, pRefValue);
+mesh.setFluxRequired(p.name());
+
+Info<< "Creating SRF model\n" << endl;
+autoPtr<SRF::SRFModel> SRF(SRF::SRFModel::New(Urel));
+
+// Construct the absolute velocity
+volVectorField U
+(
+    IOobject
+    (
+        "U",
+        runTime.timeName(),
+        mesh,
+        IOobject::NO_READ,
+        IOobject::AUTO_WRITE
+    ),
+    Urel + SRF->U()
+);
+
+singlePhaseTransportModel laminarTransport(U, phi);
+
+autoPtr<incompressible::turbulenceModel> turbulence
+(
+    incompressible::turbulenceModel::New(U, phi, laminarTransport)
+);
+
+#include "createFvOptions.H"

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/SRFSimpleFoam/pEqn.H

+{
+    volScalarField rAUrel(1.0/UrelEqn.A());
+    volVectorField HbyA("HbyA", Urel);
+    HbyA = rAUrel*UrelEqn.H();
+
+    surfaceScalarField phiHbyA("phiHbyA", fvc::flux(HbyA));
+    adjustPhi(phiHbyA, Urel, p);
+
+    tmp<volScalarField> rAtUrel(rAUrel);
+
+    if (simple.consistent())
+    {
+        rAtUrel = 1.0/(1.0/rAUrel - UrelEqn.H1());
+        phiHbyA +=
+            fvc::interpolate(rAtUrel() - rAUrel)*fvc::snGrad(p)*mesh.magSf();
+        HbyA -= (rAUrel - rAtUrel())*fvc::grad(p);
+    }
+
+    tUrelEqn.clear();
+
+    // Update the pressure BCs to ensure flux consistency
+    constrainPressure(p, Urel, phiHbyA, rAtUrel());
+
+    // Non-orthogonal pressure corrector loop
+    while (simple.correctNonOrthogonal())
+    {
+        fvScalarMatrix pEqn
+        (
+            fvm::laplacian(rAtUrel(), p) == fvc::div(phiHbyA)
+        );
+
+        pEqn.setReference(pRefCell, pRefValue);
+
+        pEqn.solve();
+
+        if (simple.finalNonOrthogonalIter())
+        {
+            phi = phiHbyA - pEqn.flux();
+        }
+    }
+
+    #include "continuityErrs.H"
+
+    // Explicitly relax pressure for momentum corrector
+    p.relax();
+
+    // Momentum corrector
+    Urel = HbyA - rAtUrel()*fvc::grad(p);
+    Urel.correctBoundaryConditions();
+    fvOptions.correct(Urel);
+}

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/UEqn.H

+    // Momentum predictor
+
+    MRF.correctBoundaryVelocity(U);
+
+    tmp<fvVectorMatrix> tUEqn
+    (
+        fvm::div(phi, U)
+      + MRF.DDt(U)
+      + turbulence->divDevReff(U)
+     ==
+        fvOptions(U)
+    );
+    fvVectorMatrix& UEqn = tUEqn.ref();
+
+    UEqn.relax();
+
+    fvOptions.constrain(UEqn);
+
+    if (simple.momentumPredictor())
+    {
+        solve(UEqn == -fvc::grad(p));
+
+        fvOptions.correct(U);
+    }

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/createFields.H

+Info<< "Reading field p\n" << endl;
+volScalarField p
+(
+    IOobject
+    (
+        "p",
+        runTime.timeName(),
+        mesh,
+        IOobject::MUST_READ,
+        IOobject::AUTO_WRITE
+    ),
+    mesh
+);
+
+Info<< "Reading field U\n" << endl;
+volVectorField U
+(
+    IOobject
+    (
+        "U",
+        runTime.timeName(),
+        mesh,
+        IOobject::MUST_READ,
+        IOobject::AUTO_WRITE
+    ),
+    mesh
+);
+
+#include "createPhi.H"
+
+
+label pRefCell = 0;
+scalar pRefValue = 0.0;
+setRefCell(p, simple.dict(), pRefCell, pRefValue);
+mesh.setFluxRequired(p.name());
+
+
+singlePhaseTransportModel laminarTransport(U, phi);
+
+autoPtr<incompressible::turbulenceModel> turbulence
+(
+    incompressible::turbulenceModel::New(U, phi, laminarTransport)
+);
+
+#include "createMRF.H"
+#include "createFvOptions.H"

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/overSimpleFoam/Make/files

+overSimpleFoam.C
+
+EXE = $(FOAM_APPBIN)/overSimpleFoam

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/overSimpleFoam/Make/options

+EXE_INC = \
+    -I$(FOAM_SOLVERS)/incompressible/pimpleFoam/overPimpleDyMFoam \
+    -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/meshTools/lnInclude \
+    -I$(LIB_SRC)/sampling/lnInclude \
+    -I$(LIB_SRC)/TurbulenceModels/turbulenceModels/lnInclude \
+    -I$(LIB_SRC)/TurbulenceModels/incompressible/lnInclude \
+    -I$(LIB_SRC)/transportModels \
+    -I$(LIB_SRC)/transportModels/incompressible/singlePhaseTransportModel \
+    -I$(LIB_SRC)/dynamicMesh/lnInclude \
+    -I$(LIB_SRC)/dynamicFvMesh/lnInclude \
+    -I$(LIB_SRC)/overset/lnInclude
+
+EXE_LIBS = \
+    -lfiniteVolume \
+    -lfvOptions \
+    -lsampling \
+    -lturbulenceModels \
+    -lincompressibleTurbulenceModels \
+    -lincompressibleTransportModels \
+    -ldynamicMesh \
+    -ldynamicFvMesh \
+    -ltopoChangerFvMesh \
+    -loverset

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/overSimpleFoam/UEqn.H

+    // Momentum predictor
+
+    MRF.correctBoundaryVelocity(U);
+
+    tmp<fvVectorMatrix> tUEqn
+    (
+        fvm::div(phi, U)
+      + MRF.DDt(U)
+      + turbulence->divDevReff(U)
+     ==
+        fvOptions(U)
+    );
+    fvVectorMatrix& UEqn = tUEqn.ref();
+
+    UEqn.relax();
+
+    fvOptions.constrain(UEqn);
+
+    if (simple.momentumPredictor())
+    {
+        solve(UEqn == -cellMask*fvc::grad(p));
+    }
+
+    fvOptions.correct(U);

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/overSimpleFoam/continuityErrs.H

+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2011 OpenFOAM Foundation
+    Copyright (C) 2016 OpenCFD Ltd.
+-------------------------------------------------------------------------------
+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
+    continuityErrs
+
+Description
+    Calculates and prints the continuity errors.
+
+\*---------------------------------------------------------------------------*/
+
+{
+    volScalarField contErr(interpolatedCells*cellMask*fvc::div(phi));
+
+    scalar sumLocalContErr = runTime.deltaTValue()*
+        mag(contErr)().weightedAverage(mesh.V()).value();
+
+    scalar globalContErr = runTime.deltaTValue()*
+        contErr.weightedAverage(mesh.V()).value();
+    cumulativeContErr += globalContErr;
+
+    Info<< "time step continuity errors : sum local = " << sumLocalContErr
+        << ", global = " << globalContErr
+        << ", cumulative = " << cumulativeContErr
+        << endl;
+}
+
+// ************************************************************************* //

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/overSimpleFoam/createFields.H

+Info<< "Reading field p\n" << endl;
+volScalarField p
+(
+    IOobject
+    (
+        "p",
+        runTime.timeName(),
+        mesh,
+        IOobject::MUST_READ,
+        IOobject::AUTO_WRITE
+    ),
+    mesh
+);
+
+Info<< "Reading field U\n" << endl;
+volVectorField U
+(
+    IOobject
+    (
+        "U",
+        runTime.timeName(),
+        mesh,
+        IOobject::MUST_READ,
+        IOobject::AUTO_WRITE
+    ),
+    mesh
+);
+
+#include "createPhi.H"
+
+
+label pRefCell = 0;
+scalar pRefValue = 0.0;
+setRefCell(p, simple.dict(), pRefCell, pRefValue);
+mesh.setFluxRequired(p.name());
+
+
+singlePhaseTransportModel laminarTransport(U, phi);
+
+autoPtr<incompressible::turbulenceModel> turbulence
+(
+    incompressible::turbulenceModel::New(U, phi, laminarTransport)
+);
+
+#include "createMRF.H"

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/overSimpleFoam/createOversetFields.H

+//- Overset specific
+
+// Add solver-specific interpolations
+{
+    wordHashSet& nonInt =
+        const_cast<wordHashSet&>(Stencil::New(mesh).nonInterpolatedFields());
+
+    nonInt.insert("HbyA");
+    nonInt.insert("grad(p)");
+    nonInt.insert("surfaceIntegrate(phi)");
+    nonInt.insert("surfaceIntegrate(phiHbyA)");
+    nonInt.insert("cellMask");
+    nonInt.insert("cellDisplacement");
+    nonInt.insert("interpolatedCells");
+    nonInt.insert("cellInterpolationWeight");
+}
+
+// Mask field for zeroing out contributions on hole cells
+#include "createCellMask.H"
+
+#include "createInterpolatedCells.H"
+
+bool adjustFringe
+(
+    simple.dict().getOrDefault("oversetAdjustPhi", false)
+);
+bool massFluxInterpolation
+(
+    simple.dict().getOrDefault("massFluxInterpolation", false)
+);

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/overSimpleFoam/createUpdatedDynamicFvMesh.H

+    Info<< "Create dynamic mesh for time = "
+        << runTime.timeName() << nl << endl;
+
+    autoPtr<dynamicFvMesh> meshPtr
+    (
+        dynamicFvMesh::New
+        (
+            IOobject
+            (
+                polyMesh::defaultRegion,
+                runTime.timeName(),
+                runTime,
+                IOobject::MUST_READ
+            )
+        )
+    );
+
+    dynamicFvMesh& mesh = meshPtr();
+
+    // Calculate initial mesh-to-mesh mapping. Note that this should be
+    // done under the hood, e.g. as a MeshObject
+    mesh.update();

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/overSimpleFoam/overSimpleFoam.C

+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2011-2014 OpenFOAM Foundation
+    Copyright (C) 2016-2017 OpenCFD Ltd.
+-------------------------------------------------------------------------------
+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
+    overSimpleFoam
+
+Group
+    grpIncompressibleSolvers
+
+Description
+    Steady-state solver for incompressible flows with turbulence modelling.
+
+    \heading Solver details
+    The solver uses the SIMPLE algorithm to solve the continuity equation:
+
+        \f[
+            \div \vec{U} = 0
+        \f]
+
+    and momentum equation:
+
+        \f[
+            \div \left( \vec{U} \vec{U} \right) - \div \gvec{R}
+          = - \grad p + \vec{S}_U
+        \f]
+
+    Where:
+    \vartable
+        \vec{U} | Velocity
+        p       | Pressure
+        \vec{R} | Stress tensor
+        \vec{S}_U | Momentum source
+    \endvartable
+
+    \heading Required fields
+    \plaintable
+        U       | Velocity [m/s]
+        p       | Kinematic pressure, p/rho [m2/s2]
+        \<turbulence fields\> | As required by user selection
+    \endplaintable
+
+\*---------------------------------------------------------------------------*/
+
+#include "fvCFD.H"
+#include "singlePhaseTransportModel.H"
+#include "turbulentTransportModel.H"
+#include "simpleControl.H"
+#include "fvOptions.H"
+
+#include "dynamicFvMesh.H"
+#include "cellCellStencilObject.H"
+#include "localMin.H"
+#include "interpolationCellPoint.H"
+#include "fvMeshSubset.H"
+#include "transform.H"
+#include "oversetAdjustPhi.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+int main(int argc, char *argv[])
+{
+    argList::addNote
+    (
+        "Steady-state solver for incompressible, turbulent flow"
+    );
+
+    #define CREATE_MESH createUpdatedDynamicFvMesh.H
+    #include "postProcess.H"
+
+    #include "setRootCaseLists.H"
+    #include "createTime.H"
+    #include "createUpdatedDynamicFvMesh.H"
+    #include "createControl.H"
+    #include "createFields.H"
+    #include "createOversetFields.H"
+    #include "createFvOptions.H"
+    #include "initContinuityErrs.H"
+
+    turbulence->validate();
+
+    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+    Info<< "\nStarting time loop\n" << endl;
+
+    while (simple.loop())
+    {
+        Info<< "Time = " << runTime.timeName() << nl << endl;
+
+        // --- Pressure-velocity SIMPLE corrector
+        {
+            #include "UEqn.H"
+            #include "pEqn.H"
+        }
+
+        laminarTransport.correct();
+        turbulence->correct();
+
+        runTime.write();
+
+        runTime.printExecutionTime(Info);
+    }
+
+    Info<< "End\n" << endl;
+
+    return 0;
+}
+
+
+// ************************************************************************* //

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/overSimpleFoam/pEqn.H

+{
+    surfaceScalarField faceMask(localMin<scalar>(mesh).interpolate(cellMask));
+
+    volScalarField rAU(1.0/UEqn.A());
+    surfaceScalarField rAUf("rAUf", faceMask*fvc::interpolate(rAU));
+
+    volVectorField HbyA("HbyA", U);
+    HbyA = constrainHbyA(cellMask*rAU*UEqn.H(), U, p);
+
+    //mesh.interpolate(HbyA);
+    if (massFluxInterpolation)
+    {
+        #include "interpolatedFaces.H"
+    }
+
+    tUEqn.clear();
+
+    surfaceScalarField phiHbyA("phiHbyA", fvc::flux(HbyA));
+
+    adjustPhi(phiHbyA, U, p);
+
+    if (adjustFringe)
+    {
+        oversetAdjustPhi(phiHbyA, U);
+    }
+
+    // Non-orthogonal pressure corrector loop
+    while (simple.correctNonOrthogonal())
+    {
+        fvScalarMatrix pEqn
+        (
+            fvm::laplacian(rAUf, p) == fvc::div(phiHbyA)
+        );
+
+        pEqn.setReference(pRefCell, pRefValue);
+
+        pEqn.solve();
+
+        if (simple.finalNonOrthogonalIter())
+        {
+            phi = phiHbyA - pEqn.flux();
+        }
+    }
+
+    #include "continuityErrs.H"
+
+    // Explicitly relax pressure for momentum corrector
+    p.relax();
+
+    // Momentum corrector
+    volVectorField gradP(fvc::grad(p));
+    //mesh.interpolate(gradP);
+
+    U = HbyA - rAU*cellMask*gradP;
+    U.correctBoundaryConditions();
+    fvOptions.correct(U);
+}

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/pEqn.H

+{
+    volScalarField rAU(1.0/UEqn.A());
+    volVectorField HbyA(constrainHbyA(rAU*UEqn.H(), U, p));
+    surfaceScalarField phiHbyA("phiHbyA", fvc::flux(HbyA));
+    MRF.makeRelative(phiHbyA);
+    adjustPhi(phiHbyA, U, p);
+
+    tmp<volScalarField> rAtU(rAU);
+
+    if (simple.consistent())
+    {
+        rAtU = 1.0/(1.0/rAU - UEqn.H1());
+        phiHbyA +=
+            fvc::interpolate(rAtU() - rAU)*fvc::snGrad(p)*mesh.magSf();
+        HbyA -= (rAU - rAtU())*fvc::grad(p);
+    }
+
+    tUEqn.clear();
+
+    // Update the pressure BCs to ensure flux consistency
+    constrainPressure(p, U, phiHbyA, rAtU(), MRF);
+
+    // Non-orthogonal pressure corrector loop
+    while (simple.correctNonOrthogonal())
+    {
+        fvScalarMatrix pEqn
+        (
+            fvm::laplacian(rAtU(), p) == fvc::div(phiHbyA)
+        );
+
+        pEqn.setReference(pRefCell, pRefValue);
+
+        pEqn.solve();
+
+        if (simple.finalNonOrthogonalIter())
+        {
+            phi = phiHbyA - pEqn.flux();
+        }
+    }
+
+    #include "continuityErrs.H"
+
+    // Explicitly relax pressure for momentum corrector
+    p.relax();
+
+    // Momentum corrector
+    U = HbyA - rAtU()*fvc::grad(p);
+    U.correctBoundaryConditions();
+    fvOptions.correct(U);
+}

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/porousSimpleFoam/Make/files

+porousSimpleFoam.C
+
+EXE = $(FOAM_APPBIN)/porousSimpleFoam

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/porousSimpleFoam/Make/options

+EXE_INC = \
+    -I.. \
+    -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/meshTools/lnInclude \
+    -I$(LIB_SRC)/sampling/lnInclude \
+    -I$(LIB_SRC)/TurbulenceModels/turbulenceModels/lnInclude \
+    -I$(LIB_SRC)/TurbulenceModels/incompressible/lnInclude \
+    -I$(LIB_SRC)/transportModels \
+    -I$(LIB_SRC)/transportModels/incompressible/singlePhaseTransportModel
+
+EXE_LIBS = \
+    -lfiniteVolume \
+    -lfvOptions \
+    -lmeshTools \
+    -lsampling \
+    -lturbulenceModels \
+    -lincompressibleTurbulenceModels \
+    -lincompressibleTransportModels

OpenFOAM-v2112/applications/solvers/incompressible/simpleFoam/porousSimpleFoam/UEqn.H

+    // Construct the Momentum equation
+
+    MRF.correctBoundaryVelocity(U);
+
+    tmp<fvVectorMatrix> tUEqn
+    (
+        fvm::div(phi, U)
+      + MRF.DDt(U)
+      + turbulence->divDevReff(U)
+      ==
+        fvOptions(U)
+    );
+    fvVectorMatrix& UEqn = tUEqn.ref();
+
+    UEqn.relax();
+
+    // Include the porous media resistance and solve the momentum equation
+    // either implicit in the tensorial resistance or transport using by
+    // including the spherical part of the resistance in the momentum diagonal
+
+    tmp<volScalarField> trAU;
+    tmp<volTensorField> trTU;
+
+    if (pressureImplicitPorosity)
+    {
+        tmp<volTensorField> tTU = tensor(I)*UEqn.A();
+        pZones.addResistance(UEqn, tTU.ref());
+        trTU = inv(tTU());
+        trTU.ref().rename("rAU");
+
+        fvOptions.constrain(UEqn);
+
+        volVectorField gradp(fvc::grad(p));
+
+        for (int UCorr=0; UCorr<nUCorr; UCorr++)
+        {
+            U = trTU() & (UEqn.H() - gradp);
+        }
+        U.correctBoundaryConditions();
+
+        fvOptions.correct(U);
+    }
+    else
+    {
+        pZones.addResistance(UEqn);
+
+        fvOptions.constrain(UEqn);
+
+        solve(UEqn == -fvc::grad(p));
+
+        fvOptions.correct(U);
+
+        trAU = 1.0/UEqn.A();
+        trAU.ref().rename("rAU");
+    }