Hi,all When I want to get the force acting on the walls caused by air and water separately, I get the same force value in fluid: All Fluids/Air at 25C/Water at 25C.So does anyone explain it?

Hi Akang

Cross check well that you used specific fluid. You can also manually calculate it at a point to check it with the CFX result. This can be done using the Calculator command or any other means!

Check the CFX Manual too to see if the formular for computing the force is same as what you're looking for.

Regards

Thanks a lot! I'll try!