[AshwaniAssam]

Hi,


I have to give the following boundary condition for pressure



where

and it is a variable defined in the code.


I coded it like this

    side0
    {
    type groovyBC;
    gradientExpression "rho0";
        variables "rho0=-rho*snGrad(phig);";
    value uniform -1.0;
    fractionExpression "0";
    }

But it is giving a wrong value. For , gradient value at the boundary should be equal to but it is giving something different.