multiphaseEuler.C

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#include "multiphaseEuler.H"
#include "localEulerDdtScheme.H"
#include "surfaceFields.H"
#include "fvcDiv.H"
#include "fvcSurfaceIntegrate.H"
#include "fvcMeshPhi.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace solvers
{
    defineTypeNameAndDebug(multiphaseEuler, 0);
    addToRunTimeSelectionTable(solver, multiphaseEuler, fvMesh);
}
}
 
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
bool Foam::solvers::multiphaseEuler::read()
{
    basicFluidSolver::read();
 
    predictMomentum =
        pimple.dict().lookupOrDefault<bool>("momentumPredictor", false);
 
    faceMomentum =
        pimple.dict().lookupOrDefault<Switch>("faceMomentum", false);
 
    dragCorrection =
        pimple.dict().lookupOrDefault<Switch>("dragCorrection", false);
 
    nEnergyCorrectors =
        pimple.dict().lookupOrDefault<int>("nEnergyCorrectors", 1);
 
    alphaControls.read(mesh.solution().solverDict("alpha"));
 
    return true;
}
 
 
void Foam::solvers::multiphaseEuler::correctCoNum()
{
    scalarField sumPhi
    (
        fvc::surfaceSum(mag(phi))().primitiveField()
    );
 
    forAll(movingPhases, movingPhasei)
    {
        sumPhi = max
        (
            sumPhi,
            fvc::surfaceSum(mag(movingPhases[movingPhasei].phi()))()
           .primitiveField()
        );
    }
 
    CoNum_ = 0.5*gMax(sumPhi/mesh.V().primitiveField())*runTime.deltaTValue();
 
    const scalar meanCoNum =
        0.5
       *(gSum(sumPhi)/gSum(mesh.V().primitiveField()))
       *runTime.deltaTValue();
 
    Info<< "Courant Number mean: " << meanCoNum
        << " max: " << CoNum << endl;
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::solvers::multiphaseEuler::multiphaseEuler(fvMesh& mesh)
:
    basicFluidSolver(mesh),
 
    predictMomentum
    (
        pimple.dict().lookupOrDefault<Switch>("momentumPredictor", false)
    ),
 
    faceMomentum
    (
        pimple.dict().lookupOrDefault<Switch>("faceMomentum", false)
    ),
 
    dragCorrection
    (
        pimple.dict().lookupOrDefault<Switch>("dragCorrection", false)
    ),
 
    nEnergyCorrectors
    (
        pimple.dict().lookupOrDefault<int>("nEnergyCorrectors", 1)
    ),
 
    trDeltaT
    (
        LTS
      ? new volScalarField
        (
            IOobject
            (
                fv::localEulerDdt::rDeltaTName,
                runTime.name(),
                mesh,
                IOobject::READ_IF_PRESENT,
                IOobject::AUTO_WRITE
            ),
            mesh,
            dimensionedScalar(dimless/dimTime, 1),
            extrapolatedCalculatedFvPatchScalarField::typeName
        )
      : nullptr
    ),
 
    buoyancy(mesh),
 
    fluid_(mesh),
 
    phases_(fluid_.phases()),
 
    movingPhases_(fluid_.movingPhases()),
 
    phi_(fluid_.phi()),
 
    momentumTransferSystem_(fluid_),
 
    heatTransferSystem_(fluid_),
 
    populationBalanceSystem_(fluid_),
 
    p_(movingPhases_[0].fluidThermo().p()),
 
    p_rgh_(buoyancy.p_rgh),
 
    pressureReference
    (
        p_,
        p_rgh_,
        pimple.dict(),
        fluid_.incompressible()
    ),
 
    MRF(fluid_.MRF()),
 
    fluid(fluid_),
    phases(phases_),
    movingPhases(movingPhases_),
    momentumTransfer(momentumTransferSystem_),
    heatTransfer(heatTransferSystem_),
    p(p_),
    p_rgh(p_rgh_),
    phi(phi_)
{
    // Read the controls
    read();
 
    mesh.schemes().setFluxRequired(p_rgh.name());
 
    if (transient())
    {
        correctCoNum();
    }
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::solvers::multiphaseEuler::~multiphaseEuler()
{}
 
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
void Foam::solvers::multiphaseEuler::preSolve()
{
    if (transient())
    {
        correctCoNum();
    }
    else if (LTS)
    {
        setRDeltaT();
    }
 
    // Store divU from the previous mesh so that it can be
    // mapped and used in correctPhi to ensure the corrected phi
    // has the same divergence
    if (correctPhi || mesh.topoChanging())
    {
        // Construct and register divU for mapping
        divU = new volScalarField
        (
            "divU0",
            fvc::div(fvc::absolute(phi, movingPhases[0].U()))
        );
    }
 
    fvModels().preUpdateMesh();
 
    // Update the mesh for topology change, mesh to mesh mapping
    mesh_.update();
}
 
 
void Foam::solvers::multiphaseEuler::prePredictor()
{
    if (pimple.thermophysics() || pimple.flow())
    {
        alphaControls.correct(CoNum);
 
        fluid_.solve(alphaControls, rAs, momentumTransferSystem_);
        populationBalanceSystem_.solve();
 
        fluid_.correct();
        populationBalanceSystem_.correct();
 
        fluid_.correctContinuityError(populationBalanceSystem_.dmdts());
    }
}
 
 
void Foam::solvers::multiphaseEuler::momentumTransportPredictor()
{
    fluid_.predictMomentumTransport();
}
 
 
void Foam::solvers::multiphaseEuler::thermophysicalTransportPredictor()
{
    // Moved inside the nEnergyCorrectors loop in thermophysicalPredictor()
    // fluid_.predictThermophysicalTransport();
}
 
 
void Foam::solvers::multiphaseEuler::momentumTransportCorrector()
{
    fluid_.correctMomentumTransport();
}
 
 
void Foam::solvers::multiphaseEuler::thermophysicalTransportCorrector()
{
    fluid_.correctThermophysicalTransport();
}
 
 
void Foam::solvers::multiphaseEuler::postSolve()
{
    divU.clear();
}
 
 
// ************************************************************************* //