Hi,
so could you please help with this project?
I cannot see what is problem in this project
Hi @MMALI!
Is this supposed to be a CFD analysis? If yes and you want to validate it, please check out the validation page here: Validation Cases | Cloud-Based CAE Simulation | SimScale - let us know if that helped and if you need any further questions.
Best,
Jousef
It may be the fact that you have a fixed pressure outlet at non-zero value, try fixed Pa=0…
That is a quick wild guess though as I always use Pa=0 for some forgotten reason 
Also I am unfamiliar with purpose Empty 2D BC…
Thanks a lot for you guess,but i did that and the problem still there.Unfortunately.
Do you have another guess?
Best
Did you try getting rid of empty 2D BC as a test?