correctPressure.C

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     \\/     M anipulation  |
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License
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#include "incompressibleDenseParticleFluid.H"
#include "constrainHbyA.H"
#include "constrainPressure.H"
#include "adjustPhi.H"
#include "fvcMeshPhi.H"
#include "fvcFlux.H"
#include "fvcDdt.H"
#include "fvcSnGrad.H"
#include "fvcReconstruct.H"
#include "fvmLaplacian.H"
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
void Foam::solvers::incompressibleDenseParticleFluid::correctPressure()
{
    volScalarField& p(p_);
    volVectorField& Uc(Uc_);
    surfaceScalarField& phic(phic_);
 
    fvVectorMatrix& UcEqn = tUcEqn.ref();
 
    const volScalarField rAUc(1.0/UcEqn.A());
    const volScalarField r1ADUc(1/(1 + rAUc*Dc()));
 
    const surfaceScalarField rAUcf(fvc::interpolate(rAUc));
    const surfaceScalarField r1ADUcf(1/(1 + rAUcf*Dcf()));
    const surfaceScalarField rADUcf("Dp", r1ADUcf*rAUcf);
 
    volVectorField HbyA(constrainHbyA(rAUc*UcEqn.H(), Uc, p));
 
    surfaceScalarField phiHbyAD
    (
        "phiHbyAD",
        (
            r1ADUcf
           *(
                fvc::flux(HbyA)
              + alphacf*rAUcf*fvc::ddtCorr(Uc, phic, Ucf)
            )
        )
    );
 
    if (p.needReference())
    {
        fvc::makeRelative(phiHbyAD, Uc);
        adjustPhi(phiHbyAD, Uc, p);
        fvc::makeAbsolute(phiHbyAD, Uc);
    }
 
    // Face buoyancy force
    const surfaceScalarField Fgf(g & mesh.Sf());
 
    phiHbyAD += rADUcf*(Fgf + Dcf()*phid());
 
    // Update the pressure BCs to ensure flux consistency
    constrainPressure(p, Uc, phiHbyAD, rADUcf);
 
    // Non-orthogonal pressure corrector loop
    while (pimple.correctNonOrthogonal())
    {
        fvScalarMatrix pEqn
        (
            fvm::laplacian(alphacf*rADUcf, p)
         ==
            fvc::ddt(alphac)
          + fvc::div(alphacf*phiHbyAD)
        );
 
        pEqn.setReference
        (
            pressureReference.refCell(),
            pressureReference.refValue()
        );
 
        pEqn.solve();
 
        if (pimple.finalNonOrthogonalIter())
        {
            phic = phiHbyAD - pEqn.flux()/alphacf;
 
            // Explicitly relax pressure for momentum corrector
            p.relax();
 
            Uc =
                r1ADUc
               *(
                    HbyA
                  + rAUc
                   *(
                        fvc::reconstruct
                        (
                            Fgf - pEqn.flux()/alphacf/rADUcf
                          - Dcf()*(phic - phid())
                        )
                      + Dc()*fvc::reconstruct(phic - phid())
                      + Fd()
                     )
                );
 
            Uc.correctBoundaryConditions();
            fvConstraints().constrain(Uc);
 
            // Correct Ucf if the mesh is moving
            fvc::correctUf(Ucf, Uc, phic);
 
            // Make the fluxes relative to the mesh motion
            fvc::makeRelative(phic, Uc);
        }
    }
}
 
 
// ************************************************************************* //