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cekelvin January 2, 2010 04:50

Error~keyword SIMPLE is undefined in dictionary
After i run the potentialFoam

a error occured

keyword SIMPLE is undefined in dictionary ".../system/fvsolution"

i have checked the fvsolution file, there doesn't not have any 'SIMPLE' inside.

Does anyone know how to fix the problem?

Thanks you very much~

nygbook October 10, 2010 20:31

When I add temperature equation to simpleFoam, I have same problem.

sdharmar October 21, 2012 04:46

didn't get any answer yet?

Krishna Veera January 31, 2014 07:32

You must be running it on simpleFoam. If the fvsolution contains PISO, this error might occur. I hope that solves your issue.

adambarfi January 31, 2014 08:16

hi everybody,

If you are solving the velocity and pressure by SIMPLE algorithm you must add the following to fvSolution:


    nNonOrthogonalCorrectors 0;
    pRefCell        0;
    pRefValue      0;

        p_rgh          1e-2; // when you need dynamic pressure
        U              1e-4;
        T              1e-2;

        // possibly check turbulence fields
        "(k|epsilon|omega)" 1e-3;

for more information about SIMPLE algorithm and how to use it see the below link:

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