ExternalCoupled patch solving problem
 

Hi everyone,

I have a problem to solve a case with an externalCoupled patch that impose the pressure on the boundary.
For example if I impose a sinusoidal law with a given amplitude and frequency using the GroovyBC method the solver works fine.
If I impose the same values with an externalCoupled patch method the timeStep of the solution falls down after few tenths of a second simulation and the solver stops.
I have checked that the value of amplitude and frequency are the same in the same time in both cases. But with GroovyBC everythink works very fine and with external program doesn't work at all.
Does someone have any idea on why this happen?

Thank you very much.

Michele