I am a new user to Fluent.

I get this error message when I try to iterate

Error: floating point exception (underflow) Error Object: #f

anyone can help me on this? any help appreciated.

You probably do not have enough memory in your computer. Some other time you have a corrupted model , but this can be checked if you try model/check. It can also be because you try to have init from a zone and not from "all zones" , but it strongly depends on the kind of boundary you used and if they are coerent or not. Check first the memory problem, maybe trying the same case with a small mesh. good luck Marc

Thanks for the reply, it was a boundary problem.