there still no answer for my 1st question. why got different in behavior for h= 790mm compared to h=800mm.


2nd, you still not come out for shell thickness solution, as mentioned at my early question. how to do for t=5mm, 10mm, 15mm in same window as any other parameter? do i need to keep redo everything when doing simulation since we cannot change the thickness through parameter setting?


3rd, if you said there is need to make split in the tank to represent the height of fluid, then manually apply pressure. So, how do we know what is the amount of pressure for certain height? do we also need to calculate manually for that by using (P= density x height x gravity)? What if the gravity is neglect? for example just based on fluid velocity or mass flow rate.