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Previous: Turbulence model modification Up: Example of creating new Next: Flat Plate Test Case

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Testing new turbulence model

    • Copy tutorial test case cavity for solver pisoFoam (solver for unsteady incompressible turbulent flow):

      # cd $FOAM_RUN
      # cp -r $FOAM_TUTORIALS/incompressible/\
      pisoFoam/RAS/cavity ./

    • Test case is already preset

       

    • In file system/controlDict add line referring to new turbulence models library:

      $ {\textcolor{blue}{\mathsf {In \ Linux: }}}$

       

      libs ("libuserincompressibleRASModels.so");

      $ {\textcolor{red}{\mathsf {In \ Windows: }}}$

       

      libs ("libuserincompressibleRASModels.dll");

       

    • In file constant/turbulenceProperties change RASModel and add section with models coefficients:

       

      simulationType    RAS;

RAS
{
    RASModel        kEpsilonCprod;

    turbulence      on;

    printCoeffs     on;

    kEpsilonCprodCoeffs
    {
        Cprod       10.0;
    }
}

       

    • Run test case:

      # blockMesh

      # pisoFoam > log &

       

    • Notice the model coefficients in solver output in file log

       

     

cavityTurb

Figure: Cavity model with kEpsilonCprod turbulence model

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