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foam-extend4.1-coherent-io/applications/solvers/immersedBoundary/pimpleDyMIbFoam/pEqn.H

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{
p.boundaryField().updateCoeffs();
// Prepare clean Ap without time derivative contribution and
// without contribution from under-relaxation
// HJ, 26/Oct/2015
aU = HUEqn.A();
// Store velocity under-relaxation point before using U for the flux
// precursor
U.storePrevIter();
U = HUEqn.H()/aU;
phi = (fvc::interpolate(U) & mesh.Sf());
// Global flux balance
adjustPhi(phi, U, p);
while (pimple.correctNonOrthogonal())
{
fvScalarMatrix pEqn
(
fvm::laplacian(1/aU, p) == fvc::div(phi)
);
pEqn.setReference(pRefCell, pRefValue);
pEqn.solve
(
mesh.solutionDict().solver(p.select(pimple.finalInnerIter()))
);
if (pimple.finalNonOrthogonalIter())
{
phi -= pEqn.flux();
}
}
// Explicitly relax pressure for momentum corrector except for last corrector
if (!pimple.finalIter())
{
p.relax();
}
// Make the fluxes relative to the mesh motion
fvc::makeRelative(phi, U);
# include "movingMeshContinuityErrs.H"
U = UUrf*
(
1.0/(aU + ddtUEqn.A())*
(
U*aU - fvc::grad(p) + ddtUEqn.H()
)
)
+ (1 - UUrf)*U.prevIter();
U.correctBoundaryConditions();
}