[atareen64]

Hello folks,

I've been doing some simulations in openfoam using the rhoSimpleFoam solver. The geometry is a convergent-divergent nozzle with approximate dimensions of 20 mm by 4 mm by 2 mm. Air is blown in through the inlet on one side and there is an outlet on the other side and I observe the results.

The issue I am having is that with a mesh of a million cells, it takes four days for my simulation to give good results. That's far too long. I know that the same simulation takes 8 hours in solidWorks using 8 processors. I am also using 8 processors using the 'simple' decomposition scheme. Can anybody think of any optimizations I can make? Or Is there a general consensus that OF is slower than solidWorks or other CFD packages?

Any help of comments would be appreciated. Please let me know if you would like me to post additional information.

Thank you!
-Ammar.