Reply To: Fluid structure interaction highly distorted elements

[crumberg]

The time involved for running solutions is the part I hate the most about trying to debug ANSYS models. Still, I rarely have a solution take more than an hour and my computer is only 4 cores with 16GB RAM. I would venture to say that most of my runs either fail or solve within 15 minutes for models under 100K elements. There may be some ways to speed up your process. Sorry if this sounds basic, but I would check to make sure that distributed computing is turned on so that you can make use of multiple cores. The caveat is that, at least in my experience, memory reference errors can sometimes result from distributed computing so you may have to reduce the number of cores used for solving if that becomes a problem. Also, when I am trying to troubleshoot parts of the model other than the mesh, I will sometimes use a low or medium resolution adaptive mesh to try to keep my number of elements under a certain level. (If you're using the student version of ANSYS, this may not apply to your case because the solver won't even attempt to run if you have too many elements in your model due to license restrictions.) Also, if you're solving using a remote connection to a university computer, there can be delays from multiple users attempting to use the software at the same time. My university prioritizes on-campus computers over off-campus VPN connections and it helps if I work during early mornings or late evenings when fewer students are trying to access the system. Even if you are using a local installation on a university computer, heavy use on a shared license might cause delays. I think it would definitely be worth contacting your IT department for recommendations. If all else fails, running a scaled down version of you model on a free student license on your home PC should let you experiment with your model much more quickly to experiment with various model parameters.