openfoam/applications/solvers/multiphase/interPhaseChangeFoam/pEqn.H

75 lines
1.9 KiB
C

{
volScalarField rAU("rAU", 1.0/UEqn.A());
surfaceScalarField rAUf("rAUf", fvc::interpolate(rAU));
volVectorField HbyA("HbyA", U);
HbyA = rAU*UEqn.H();
surfaceScalarField phiHbyA
(
"phiHbyA",
(fvc::interpolate(HbyA) & mesh.Sf())
+ fvc::interpolate(rho*rAU)*fvc::ddtCorr(U, phi)
);
adjustPhi(phiHbyA, U, p_rgh);
surfaceScalarField phig
(
(
fvc::interpolate(interface.sigmaK())*fvc::snGrad(alpha1)
- ghf*fvc::snGrad(rho)
)*rAUf*mesh.magSf()
);
phiHbyA += phig;
// Update the fixedFluxPressure BCs to ensure flux consistency
setSnGrad<fixedFluxPressureFvPatchScalarField>
(
p_rgh.boundaryField(),
(
phiHbyA.boundaryField()
- (mesh.Sf().boundaryField() & U.boundaryField())
)/(mesh.magSf().boundaryField()*rAUf.boundaryField())
);
Pair<tmp<volScalarField> > vDotP = twoPhaseProperties->vDotP();
const volScalarField& vDotcP = vDotP[0]();
const volScalarField& vDotvP = vDotP[1]();
while (pimple.correctNonOrthogonal())
{
fvScalarMatrix p_rghEqn
(
fvc::div(phiHbyA) - fvm::laplacian(rAUf, p_rgh)
- (vDotvP - vDotcP)*(pSat - rho*gh) + fvm::Sp(vDotvP - vDotcP, p_rgh)
);
p_rghEqn.setReference(pRefCell, pRefValue);
p_rghEqn.solve(mesh.solver(p_rgh.select(pimple.finalInnerIter())));
if (pimple.finalNonOrthogonalIter())
{
phi = phiHbyA + p_rghEqn.flux();
U = HbyA + rAU*fvc::reconstruct((phig + p_rghEqn.flux())/rAUf);
U.correctBoundaryConditions();
fvOptions.correct(U);
}
}
p == p_rgh + rho*gh;
if (p_rgh.needReference())
{
p += dimensionedScalar
(
"p",
p.dimensions(),
pRefValue - getRefCellValue(p, pRefCell)
);
p_rgh = p - rho*gh;
}
}