buoyantFoam.C

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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.

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    You should have received a copy of the GNU General Public License
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Application
    buoyantFoam

Description
    Solver for steady or transient buoyant, turbulent flow of compressible
    fluids for ventilation and heat-transfer, with optional mesh motion and mesh
    topology changes.

    Uses the flexible PIMPLE (PISO-SIMPLE) solution for time-resolved and
    pseudo-transient simulations.

\*---------------------------------------------------------------------------*/

#include "fvCFD.H"
#include "fluidThermo.H"
#include "compressibleMomentumTransportModels.H"
#include "fluidThermophysicalTransportModel.H"
#include "pimpleControl.H"
#include "pressureReference.H"
#include "hydrostaticInitialisation.H"
#include "CorrectPhi.H"
#include "fvModels.H"
#include "fvConstraints.H"
#include "localEulerDdtScheme.H"
#include "fvcSmooth.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

int main(int argc, char *argv[])
{
    #include "postProcess.H"

    #include "setRootCaseLists.H"
    #include "createTime.H"
    #include "createMesh.H"
    #include "createDyMControls.H"
    #include "initContinuityErrs.H"
    #include "createFields.H"
    #include "createFieldRefs.H"
    #include "createRhoUfIfPresent.H"

    turbulence->validate();

    if (!LTS)
    {
        #include "compressibleCourantNo.H"
        #include "setInitialDeltaT.H"
    }

    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

    Info<< "\nStarting time loop\n" << endl;

    while (pimple.run(runTime))
    {
        #include "readDyMControls.H"

        // Store divrhoU from the previous mesh so that it can be mapped
        // and used in correctPhi to ensure the corrected phi has the
        // same divergence
        autoPtr<volScalarField> divrhoU;
        if (correctPhi)
        {
            divrhoU = new volScalarField
            (
                "divrhoU",
                fvc::div(fvc::absolute(phi, rho, U))
            );
        }

        if (LTS)
        {
            #include "setRDeltaT.H"
        }
        else
        {
            #include "compressibleCourantNo.H"
            #include "setDeltaT.H"
        }

        fvModels.preUpdateMesh();

        // Store momentum to set rhoUf for introduced faces.
        autoPtr<volVectorField> rhoU;
        if (rhoUf.valid())
        {
            rhoU = new volVectorField("rhoU", rho*U);
        }

        // Update the mesh for topology change, mesh to mesh mapping
        mesh.update();

        runTime++;

        Info<< "Time = " << runTime.userTimeName() << nl << endl;

        // --- Pressure-velocity PIMPLE corrector loop
        while (pimple.loop())
        {
            if (!pimple.flow())
            {
                if (pimple.models())
                {
                    fvModels.correct();
                }

                if (pimple.thermophysics())
                {
                    #include "EEqn.H"
                }
            }
            else
            {
                if (pimple.firstPimpleIter() || moveMeshOuterCorrectors)
                {
                    // Move the mesh
                    mesh.move();

                    if (mesh.changing())
                    {
                        gh = (g & mesh.C()) - ghRef;
                        ghf = (g & mesh.Cf()) - ghRef;

                        MRF.update();

                        if (correctPhi)
                        {
                            #include "correctPhi.H"
                        }

                        if (checkMeshCourantNo)
                        {
                            #include "meshCourantNo.H"
                        }
                    }
                }

                if (pimple.firstPimpleIter() && !pimple.simpleRho())
                {
                    #include "rhoEqn.H"
                }

                if (pimple.models())
                {
                    fvModels.correct();
                }

                #include "UEqn.H"

                if (pimple.thermophysics())
                {
                    #include "EEqn.H"
                }

                // --- Pressure corrector loop
                while (pimple.correct())
                {
                    #include "pEqn.H"
                }

                if (pimple.turbCorr())
                {
                    turbulence->correct();
                    thermophysicalTransport->correct();
                }
            }
        }

        rho = thermo.rho();

        runTime.write();

        Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
            << "  ClockTime = " << runTime.elapsedClockTime() << " s"
            << nl << endl;
    }

    Info<< "End\n" << endl;

    return 0;
}


// ************************************************************************* //