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https://github.com/OpenFOAM/OpenFOAM-6.git
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655fc78748
rhoSimpleFoam now instantiates the lower-level fluidThermo which instantiates
either a psiThermo or rhoThermo according to the 'type' specification in
thermophysicalProperties, e.g.
thermoType
{
type hePsiThermo;
mixture pureMixture;
transport sutherland;
thermo janaf;
equationOfState perfectGas;
specie specie;
energy sensibleInternalEnergy;
}
instantiates a psiThermo for a perfect gas with JANAF thermodynamics, whereas
thermoType
{
type heRhoThermo;
mixture pureMixture;
properties liquid;
energy sensibleInternalEnergy;
}
mixture
{
H2O;
}
instantiates a rhoThermo for water, see new tutorial
compressible/rhoSimpleFoam/squareBendLiq.
In order to support complex equations of state the pressure can no longer be
unlimited and rhoSimpleFoam now limits the pressure rather than the density to
handle start-up more robustly.
For backward compatibility 'rhoMin' and 'rhoMax' can still be used in the SIMPLE
sub-dictionary of fvSolution which are converted into 'pMax' and 'pMin' but it
is better to set either 'pMax' and 'pMin' directly or use the more convenient
'pMinFactor' and 'pMinFactor' from which 'pMax' and 'pMin' are calculated using
the fixed boundary pressure or reference pressure e.g.
SIMPLE
{
nNonOrthogonalCorrectors 0;
pMinFactor 0.1;
pMaxFactor 1.5;
transonic yes;
consistent yes;
residualControl
{
p 1e-3;
U 1e-4;
e 1e-3;
"(k|epsilon|omega)" 1e-3;
}
}
88 lines
2.0 KiB
C++
88 lines
2.0 KiB
C++
/*--------------------------------*- C++ -*----------------------------------*\
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| ========= | |
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| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
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| \\ / O peration | Version: dev |
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| \\ / A nd | Web: www.OpenFOAM.org |
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| \\/ M anipulation | |
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\*---------------------------------------------------------------------------*/
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FoamFile
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{
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version 2.0;
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format ascii;
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class dictionary;
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location "system";
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object fvSolution;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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solvers
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{
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p
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{
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solver GAMG;
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tolerance 1e-08;
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relTol 0.05;
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smoother GaussSeidel;
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nCellsInCoarsestLevel 20;
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}
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U
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{
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solver smoothSolver;
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smoother GaussSeidel;
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nSweeps 2;
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tolerance 1e-06;
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relTol 0.1;
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}
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e
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{
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solver smoothSolver;
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smoother symGaussSeidel;
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tolerance 1e-06;
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relTol 0.1;
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}
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"(k|epsilon)"
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{
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$U;
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tolerance 1e-07;
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relTol 0.1;
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}
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}
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SIMPLE
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{
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nNonOrthogonalCorrectors 0;
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pMinFactor 0.4;
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pMaxFactor 1.5;
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residualControl
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{
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p 1e-2;
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U 1e-4;
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e 1e-3;
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// Possibly check turbulence fields
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"(k|epsilon|omega)" 1e-3;
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}
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}
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relaxationFactors
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{
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fields
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{
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p 0.3;
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rho 0.05;
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}
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equations
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{
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U 0.7;
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"(k|epsilon)" 0.7;
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e 0.5;
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}
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}
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// ************************************************************************* //
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