FSI with MFX

V. Kumar

HI All

I am trying to simulate a coupled flow and structure problem with ANSYS+CFX (two way) coupling using MFX feature of ANSYS10.0

So far I am not much satisfied with it due to the following reasons:

-- It requires ANSYS classic knowledge and learing ANSYS apdl scripts needs a lot of time. In short it is not user friendly.

-- Secondly, convergence of Stagger iterations is really poor. I tried everything so far, i.e. varying time steps, under-relaxation etc. but there is no much success. In fact Stagger-iterations do not converge at all in my case.

Therefore I would like ask the following:

Is any user successfully using FSI feature of ANSYS10.0 for two-way coupling(Ofcourse not the people/developers from ANSYS)?

Can anybody share with me his/her expereince on ANSYS-CFX coupling with MFX e.g. convergence robustness, limitations, drawbacks etc?

Another question: which is the best commercial or freeware code for a FSI simulation.

many thanks in advance

VK