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Turbulent quantities
- Turbulence parameters are set in file turbulenceProperties in directory constant
- Print the file on the screen:
# cat $FOAM_RUN /pitzDaily/constant/turbulenceProperties/*--------------------------------*- 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 { // Tested with kEpsilon, realizableKE, kOmega, kOmegaSST, v2f, // ShihQuadraticKE, LienCubicKE. RASModel kEpsilon; turbulence on; printCoeffs on; } // ************************************************************************* // - Parameter symulationType sets RAS, which stands for Reynolds averaged Navier-Stokes.
- RAS subdictionary sums up all necessary settings for RAS.
- RASModel is set to
. Other possibilities are summed up in the commentary. - Parameter turbulence can switch turbulence on or off (on/off )
- Parameter printCoeffs means the turbulence model coefficients are to be printed in standard output to the screen, when solver starts
Selecting RAS turbulence model kEpsilon RAS { RASModel kEpsilon; turbulence on; printCoeffs on; Cmu 0.09; C1 1.44; C2 1.92; C3 0; sigmak 1; sigmaEps 1.3; } - Parameter kEpsilonCoeffs is optional, and can change default turbulence model coefficients