283f8b7dc8
Multi-region PIMPLE controls have been applied to the chtMultiRegionFoam
solver, and a transonic option has been implemented.
The new PIMPLE controls let the solver operate SIMPLE mode. The
utilisation of library solution and convergence control functionality
has significantly reduced the amount of code in the solver. The
chtMultiRegionSimpleFoam solver has also been made obsolete, and has
therefore been removed.
A few changes will be necessary to convert an existing
chtMultiRegionSimpleFoam case to chtMultiRegionFoam. All the SIMPLE
sub-dictionaries in the system/<regions>/fvSolution will need to be
renamed PIMPLE. The system/fvSolution file will also need an empty
PIMPLE sub-dictionary. In addition, additional "<variable>Final" solver
and relaxation entries will be needed. For a steady case, adding a
wildcard ending, ".*", to the variable names should be sufficient.
Solution parameters appropriate for a steady case are shown below:
solvers
{
"p_rgh.*"
{
solver GAMG;
tolerance 1e-7;
relTol 0.01;
smoother DIC;
maxIter 10;
}
"(U|h|e|k|epsilon).*"
{
solver PBiCGStab;
preconditioner DILU;
tolerance 1e-7;
relTol 0.1;
}
}
PIMPLE
{
// ...
}
relaxationFactors
{
fields
{
"p_rgh.*" 0.7;
}
equations
{
"U.*" 0.5;
"(h|e).*" 0.3;
"(k|epsilon).*" 0.2;
}
}
This work was supported by Fabian Buelow, at Evonik
Tobias Holzmann provided cases for testing the convergence controls
179 lines
3.8 KiB
C++
179 lines
3.8 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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object topoSetDict;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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actions
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(
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// Heater
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{
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name heaterCellSet;
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type cellSet;
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action new;
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source boxToCell;
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sourceInfo
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{
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box (-0.01001 0 -100 )(0.01001 0.00999 100);
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}
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}
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{
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name heaterCellSet;
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type cellSet;
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action add;
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source boxToCell;
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sourceInfo
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{
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box (-0.01001 -100 -0.01001)(0.01001 0.00999 0.01001);
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}
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}
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{
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name heater;
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type cellZoneSet;
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action new;
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source setToCellZone;
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sourceInfo
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{
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set heaterCellSet;
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}
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}
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// leftSolid
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{
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name leftSolidCellSet;
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type cellSet;
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action new;
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source boxToCell;
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sourceInfo
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{
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box (-100 0 -100 )(-0.01001 0.00999 100);
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}
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}
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{
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name leftSolid;
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type cellZoneSet;
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action new;
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source setToCellZone;
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sourceInfo
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{
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set leftSolidCellSet;
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}
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}
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// rightSolid
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{
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name rightSolidCellSet;
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type cellSet;
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action new;
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source boxToCell;
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sourceInfo
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{
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box (0.01001 0 -100 )(100 0.00999 100);
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}
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}
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{
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name rightSolid;
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type cellZoneSet;
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action new;
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source setToCellZone;
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sourceInfo
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{
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set rightSolidCellSet;
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}
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}
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// topAir
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{
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name topAirCellSet;
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type cellSet;
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action new;
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source boxToCell;
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sourceInfo
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{
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box (-100 0.00999 -100 )(100 100 100);
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}
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}
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{
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name topAir;
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type cellZoneSet;
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action new;
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source setToCellZone;
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sourceInfo
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{
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set topAirCellSet;
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}
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}
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// bottomAir is all the other cells
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{
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name bottomAirCellSet;
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type cellSet;
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action new;
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source cellToCell;
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sourceInfo
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{
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set heaterCellSet;
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}
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}
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{
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name bottomAirCellSet;
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type cellSet;
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action add;
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source cellToCell;
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sourceInfo
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{
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set leftSolidCellSet;
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}
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}
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{
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name bottomAirCellSet;
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type cellSet;
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action add;
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source cellToCell;
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sourceInfo
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{
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set rightSolidCellSet;
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}
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}
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{
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name bottomAirCellSet;
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type cellSet;
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action add;
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source cellToCell;
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sourceInfo
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{
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set topAirCellSet;
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}
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}
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{
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name bottomAirCellSet;
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type cellSet;
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action invert;
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}
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{
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name bottomAir;
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type cellZoneSet;
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action new;
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source setToCellZone;
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sourceInfo
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{
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set bottomAirCellSet;
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}
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}
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);
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// ************************************************************************* //
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