Different results for same simulation
 

Hello,
I am running the exact same model & parameters (basically the same simulation) without any changes at all. Basically, run today, close the thing, come back tomorrow, run again the same thing and I get two different answers. Anybody know any reason why that could be? Thanks in advance.

hey did you ever find out why this was happening? Having the same issue myself!

Laura

What are your boundary conditions? What is the coupling method (velocity-pressure)?

I suspect the simulations are not set up identical or the simulation itself has some kind of randomnes implemented. If the first thing can be ruled out entirely, i would help to know the simulation approach e.g. DNS, LES, RANS, URANS, BC's etc.