Dear Elmer friends
I want to apply a step velocity (V2=0.5) at t=0 on the inlet boundary of a tube (tube radius=0.01). I use the following command but the velocity increases over the time to V2=30 until the solver diverges.
Velocity 2 = Variable Coordinate 1, Real MATC "0.5*(1-(tx/0.01)^2)"
Do you have any idea about this problem?
Thanks, hamed