CFD Online Discussion Forums - [swak4Foam] groovyBC conditionnal BC if inflow our outflow velocity

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loic_d

March 18, 2015 14:12

groovyBC conditionnal BC if inflow our outflow velocity

Hi everyone,
I am trying to define a different boundary condition for the salinity S if the velocity on my boundary is inflow our outflow:

fixedValue 1 if inflow
zeroGradient if outflow

I use the following code unsuccessfully (nothing happened):

Code:

Sea

    {

        type            groovyBC;

        valueExpression "1";

        gradientExpression "0";

        fractionExpression "(U&normal()>0)?0:1";

        value uniform   0;



    }

Thanks you
Loïc

wyldckat

March 28, 2015 16:56

For future reference, this was answered here: http://www.openfoam.org/mantisbt/view.php?id=1582

Quote:

Greetings to all!

@loic_d: From your description... have you tried using the boundary type "inletOutlet"? See the last table on this page: http://www.openfoam.org/docs/user/boundaries.php [^] - the reference to "p" is actually in reference to the field where the boundary type is defined.

Best regards,
Bruno

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