Why is my 2-way FSI going to take so long to complete? Can I change something to make it go faster?
So I still have work to do for my simulation but my report is due in a week so I need to get something done to hand in. I ran this simulation before without knowing too much about the Fluent setup and so it was overly simplified, but not much has changed.
Last night I started the coupled analysis with the changes I made (some minor mesh refinements, enabling the energy equation, and changing a few physics settings) and it's been running for about 9.5 hours now at only 48% complete. Why is it taking so much longer than before? I'm doing the same amount of iterations but now it's going to take nearly 10x as long (it took just under an hour and a half before).
Is there a single specific setting that would do this? When I was running just Fluent on its own it would solve within a few minutes at the very most for even up to about 100 iterations. I'm only running 250 iterations of system coupling right now.
Unless someone has a solution, I'm just going to let this finish and lose any productivity I was going to have today because I don't want to make ANSYS crash by overstressing my CPU or something, but I am still going to be working on this after my formal project is due, and I would like to solve for a longer total simulation time (or at the very least, change some things and try again) without needing to forfeit my computer for nearly a whole day.