groovy BC - which value is used
 

Hi!

I am using the groovy BC for the temperature T as followed:
{
type groovyBC;
value uniform 263.15;
variables "cp0=1006.4;rho0=1.34;lambda=0.03;thickness=0.09;h a=0.3;Ta=293.15;heatFlux=1/(1/ha+thickness/lambda)*(Ta - T);gradT=heatFlux/(cp0*alphaEff*rho0);";
gradientExpression "gradT";
fractionExpression "0";
}

In my "variables" I have the temperature T and my question is:

"For T in "variables" which value is used? Is it the patch value one time step before or is used the value T_C (internal field value) or the groovy BC solves the "variables" expression for my current T?

I made some tests and as I understand it T is the patch value one time step before but I don't know for sure.

Thx for any help
Kind regards
Alex

Hello,

yes, T is oldTime(T) and you can write it oldTime(T).

Thx for the help!!!