Modal analysis of a water tank
Hi, i'm trying to do a modal analysis of a water tank but i'm having some problems and i got stuck. first I'd tried to follow as example a model that i bought and it seems very "simply", but my model didn't work, then i read (in another ansys forum) that "modal acoustic" could work, but again it didn't work for me. So i don't know what could be the problem. i know that fluid80 element is not longer able to be used in a modal analysis.
Also, i'm using ansys student version (2020), do i have to use an extension if i want to use the "modal acoustic" analysis?.
thanks a lot