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simpleFoam/SRFSimpleFoam: Added support for SIMPLEC

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SIMPLEC (SIMPLE-consistent) is selected by setting "consistent" option true/yes:

SIMPLE
{
    nNonOrthogonalCorrectors 0;
    consistent yes;
}

which relaxes the pressure in a "consistent" manner and additional
relaxation of the pressure is not generally necessary.  In addition
convergence of the p-U system is better and reliable with less
aggressive relaxation of the momentum equation, e.g. for the motorbike
tutorial:

relaxationFactors
{
    equations
    {
        U               0.9;
        k               0.7;
        omega           0.7;
    }
}

The cost per iteration is marginally higher but the convergence rate is
better so the number of iterations can be reduced.

The SIMPLEC algorithm also provides benefit for cases with large
body-forces, e.g. SRF, see tutorials/incompressible/SRFSimpleFoam/mixer
and feature request http://www.openfoam.org/mantisbt/view.php?id=1714
This commit is contained in:
Henry
2015-05-29 11:30:40 +01:00
parent 80f923d0f1
commit 1b6f46fae0
8 changed files with 60 additions and 61 deletions
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12
tutorials/incompressible/SRFSimpleFoam/mixer/system/fvSolution
View File

@ -37,22 +37,14 @@ solvers
SIMPLE
{
nNonOrthogonalCorrectors 0;
consistent yes;
}
relaxationFactors
{
fields
{
p 0.3;
}
equations
{
Urel 0.7;
k 0.7;
epsilon 0.7;
omega 0.7;
R 0.7;
nuTilda 0.7;
".*" 0.9;
}
}

30
tutorials/incompressible/SRFSimpleFoam/mixer/turbulenceProperties
View File

@ -1,30 +0,0 @@
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: dev |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "constant";
object turbulenceProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
simulationType RAS;
RAS
{
RASModel kOmegaSST;
turbulence on;
printCoeffs on;
}
// ************************************************************************* //

7
tutorials/incompressible/simpleFoam/motorBike/system/fvSolution
View File

@ -66,6 +66,7 @@ solvers
SIMPLE
{
nNonOrthogonalCorrectors 0;
consistent yes;
}
potentialFlow
@ -75,13 +76,9 @@ potentialFlow
relaxationFactors
{
fields
{
p 0.3;
}
equations
{
U 0.7;
U 0.9;
k 0.7;
omega 0.7;
}