[alimea]

Hi

I want to create a special BC (boundary condition) in a patch of a cavity. So I used "groovyBC" in such a way:

movingWal
{
type              groovyBC;
variables       "teta=atan(pos().y/pos().x);r=pow((pow(pos().x,2)+pow(pos().y,2)),0.5)";
valueExpression     vector(-sin(teta), cos(teta), 0)*pow(teta,2);
value     uniform (0,0,0);
conditions      "r<1.008";
}

but it gives me this error:


continuity error cannot be removed by adjusting the outflow.

Do you know what the reason?

[rakesh927]

Hi alimea,


I am just giving a wild guess, just place the valueExpression in quotations ("").

valueExpression     "vector(-sin(teta), cos(teta), 0)*pow(teta,2)";

Rakesh

[alimea]

Originally Posted by rakesh927

Hi alimea,


I am just giving a wild guess, just place the valueExpression in quotations ("").

valueExpression     "vector(-sin(teta), cos(teta), 0)*pow(teta,2)";

Rakesh

Dear rakesh

Thanks for your reply
Yes, I have put it on "" but I didn't write it here!
I solved it fortunately by initializing with a solution based on fixedValue BC.