[deniggo]

Hello,

I would like to use groovyBC for a periodic inlet/outlet. I tried the tutorial 4.2.3 on http://openfoamwiki.net/index.php/Contrib_groovyBC. In 0/U phi is taken into account and not U directly. So, I modified the BC to:

inlet
    {
      type                         groovyBC;
      variables                   "Uoutlet@outlet=-1*sum(U);";
      valueExpression        "Uoutlet/sum(mag(Sf()))*normal()";
      fractionExpression     "1"
      value                         $internalField;
}
outlet
    {
        type zeroGradient;
    }

But this error occurs: The expected return type vector is different from the stored result type "tensor".
I guess there's something wrong concerning the definition of U=vector and phi.

What do I have to change to get the bc running?

Thanks for your help,

Nico