Rana Nasser

Saandeep and Jason Thank you so much for you help!

Actually my problem is a dynamic problem, I'm doing a simulation for a regulator (small dam) and I need to take the effect of the water that passing through the regulator vents in to concederation in the modal analysis of the regulator and also in a transient analysis for the regulator under the effect of an acceleration due to external excitation. Is there any suggestions?!

Because of the large dimensions and number of elements that used to build the model I always have problems in using APDL to solve my problem, so I'm trying to find a solution based on using workbench module as much as I can.