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foam-extend4.1-coherent-io/applications/solvers/combustion/rhoReactingFoam/pEqn.H

85 lines
2 KiB
C++

{
rho = thermo.rho();
// Thermodynamic density needs to be updated by psi*d(p) after the
// pressure solution - done in 2 parts. Part 1:
thermo.rho() -= psi*p;
volScalarField rUA = 1.0/UEqn.A();
U = rUA*UEqn.H();
if (pimple.transonic())
{
surfaceScalarField phiv =
(fvc::interpolate(U) & mesh.Sf())
+ fvc::ddtPhiCorr(rUA, rho, U, phi);
phi = fvc::interpolate(rho)*phiv;
surfaceScalarField phid
(
"phid",
fvc::interpolate(thermo.psi())*phiv
);
while (pimple.correctNonOrthogonal())
{
fvScalarMatrix pEqn
(
fvc::ddt(rho) + fvc::div(phi)
+ correction(fvm::ddt(psi, p) + fvm::div(phid, p))
- fvm::laplacian(rho*rUA, p)
);
pEqn.solve
(
mesh.solutionDict().solver(p.select(pimple.finalInnerIter()))
);
if (pimple.finalNonOrthogonalIter())
{
phi += pEqn.flux();
}
}
}
else
{
phi =
fvc::interpolate(rho)
*(
(fvc::interpolate(U) & mesh.Sf())
+ fvc::ddtPhiCorr(rUA, rho, U, phi)
);
while (pimple.correctNonOrthogonal())
{
fvScalarMatrix pEqn
(
fvc::ddt(rho) + psi*correction(fvm::ddt(p))
+ fvc::div(phi)
- fvm::laplacian(rho*rUA, p)
);
pEqn.solve
(
mesh.solutionDict().solver(p.select(pimple.finalInnerIter()))
);
if (pimple.finalNonOrthogonalIter())
{
phi += pEqn.flux();
}
}
}
// Second part of thermodynamic density update
thermo.rho() += psi*p;
#include "rhoEqn.H"
#include "compressibleContinuityErrs.H"
U -= rUA*fvc::grad(p);
U.correctBoundaryConditions();
DpDt = fvc::DDt(surfaceScalarField("phiU", phi/fvc::interpolate(rho)), p);
}