songtianlun/openfoam
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Rationalized pEqn in sprayFoam solvers

Browse Source
This commit is contained in:
Henry 2015-02-16 21:45:28 +00:00
parent 7132f1380f
commit fb54c54db0
5 changed files with 48 additions and 126 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
applications/solvers/compressible/rhoPimpleFoam/pEqn.H
View File

@ -62,7 +62,6 @@ else
while (pimple.correctNonOrthogonal())
{
// Pressure corrector
fvScalarMatrix pEqn
(
fvm::ddt(psi, p)

10
applications/solvers/lagrangian/sprayFoam/UEqn.H
View File

@ -1,4 +1,6 @@
fvVectorMatrix UEqn
// Solve the Momentum equation
tmp<fvVectorMatrix> UEqn
(
fvm::ddt(rho, U)
+ fvm::div(phi, U)
@ -9,13 +11,13 @@
+ fvOptions(rho, U)
);
UEqn.relax();
UEqn().relax();
fvOptions.constrain(UEqn);
fvOptions.constrain(UEqn());
if (pimple.momentumPredictor())
{
solve(UEqn == -fvc::grad(p));
solve(UEqn() == -fvc::grad(p));
fvOptions.correct(U);
K = 0.5*magSqr(U);

29
applications/solvers/lagrangian/sprayFoam/pEqn.H
View File

@ -1,10 +1,18 @@
rho = thermo.rho();
rho = max(rho, rhoMin);
rho = min(rho, rhoMax);
rho.relax();
volScalarField rAU(1.0/UEqn.A());
volScalarField rAU(1.0/UEqn().A());
surfaceScalarField rhorAUf("rhorAUf", fvc::interpolate(rho*rAU));
volVectorField HbyA("HbyA", U);
HbyA = rAU*UEqn.H();
HbyA = rAU*UEqn().H();
if (pimple.nCorrPISO() <= 1)
{
UEqn.clear();
}
if (pimple.transonic())
{
@ -13,9 +21,9 @@ if (pimple.transonic())
"phid",
fvc::interpolate(psi)
*(
(fvc::interpolate(rho*HbyA) & mesh.Sf())
+ rhorAUf*fvc::ddtCorr(rho, U, phi)
)/fvc::interpolate(rho)
(fvc::interpolate(HbyA) & mesh.Sf())
+ rhorAUf*fvc::ddtCorr(rho, U, phi)/fvc::interpolate(rho)
)
);
fvOptions.makeRelative(fvc::interpolate(psi), phid);
@ -77,6 +85,17 @@ else
#include "rhoEqn.H"
#include "compressibleContinuityErrs.H"
// Explicitly relax pressure for momentum corrector
p.relax();
// Recalculate density from the relaxed pressure
rho = thermo.rho();
rho = max(rho, rhoMin);
rho = min(rho, rhoMax);
rho.relax();
Info<< "rho max/min : " << max(rho).value()
<< " " << min(rho).value() << endl;
U = HbyA - rAU*fvc::grad(p);
U.correctBoundaryConditions();
fvOptions.correct(U);

98
applications/solvers/lagrangian/sprayFoam/sprayEngineFoam/pEqn.H
View File

@ -1,98 +0,0 @@
rho = thermo.rho();
volScalarField rAU(1.0/UEqn.A());
surfaceScalarField rhorAUf("rhorAUf", fvc::interpolate(rho*rAU));
volVectorField HbyA("HbyA", U);
HbyA = rAU*UEqn.H();
if (pimple.transonic())
{
surfaceScalarField phid
(
"phid",
fvc::interpolate(psi)
*(
(
(fvc::interpolate(rho*HbyA) & mesh.Sf())
+ rhorAUf*fvc::ddtCorr(rho, U, rhoUf)
)/fvc::interpolate(rho)
)
);
fvc::makeRelative(phid, psi, U);
fvOptions.makeRelative(fvc::interpolate(psi), phid);
while (pimple.correctNonOrthogonal())
{
fvScalarMatrix pEqn
(
fvm::ddt(psi, p)
+ fvm::div(phid, p)
- fvm::laplacian(rhorAUf, p)
==
parcels.Srho()
+ fvOptions(psi, p, rho.name())
);
pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
if (pimple.finalNonOrthogonalIter())
{
phi == pEqn.flux();
}
}
}
else
{
surfaceScalarField phiHbyA
(
"phiHbyA",
(
(fvc::interpolate(HbyA) & mesh.Sf())
+ rhorAUf*fvc::ddtCorr(rho, U, rhoUf)
)
);
fvc::makeRelative(phiHbyA, rho, U);
fvOptions.makeRelative(fvc::interpolate(rho), phiHbyA);
while (pimple.correctNonOrthogonal())
{
fvScalarMatrix pEqn
(
fvm::ddt(psi, p)
+ fvc::div(phiHbyA)
- fvm::laplacian(rhorAUf, p)
==
parcels.Srho()
+ fvOptions(psi, p, rho.name())
);
pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
if (pimple.finalNonOrthogonalIter())
{
phi = phiHbyA + pEqn.flux();
}
}
}
#include "rhoEqn.H"
#include "compressibleContinuityErrs.H"
U = HbyA - rAU*fvc::grad(p);
U.correctBoundaryConditions();
fvOptions.correct(U);
K = 0.5*magSqr(U);
{
rhoUf = fvc::interpolate(rho*U);
surfaceVectorField n(mesh.Sf()/mesh.magSf());
rhoUf += n*(fvc::absolute(phi, rho, U)/mesh.magSf() - (n & rhoUf));
}
if (thermo.dpdt())
{
dpdt = fvc::ddt(p) - fvc::div(fvc::meshPhi(rho, U), p);
}