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-   -   No convergence method available in ANYS FSI problems? (http://www.cfd-online.com/Forums/structural-mechanics/117543-no-convergence-method-available-anys-fsi-problems.html)

 acasas May 10, 2013 07:54

No convergence method available in ANYS FSI problems?

Hi , I canīt add a convergence method on a FSI problem. A pressure solution from CFX fluid analisis is beeing aplyied over a wing shaped structure as a load. When I try to add the convergence method under solution options in mechanical workbench, this option is not availabe.
If I do supress the imported pressure, and add a simple force load on the tip of the wing shaped structure, then this option is available and I can use this convergence method.
Can someone tell me why?
Thankīs a lot

 Far May 10, 2013 08:10

http://www.cfd-online.com/Forums/ans...workbench.html

 acasas May 10, 2013 08:28

mmm, donīt understand. Why 2 way? iīts 1 way in my case.
thankīs

 acasas May 10, 2013 08:32

by the way, I see my post have been moved. How to find where? And why itīs beeing moved? I have posted under Ansys forum directory, isnīt the right way to do it?
Thankīs

 Far May 10, 2013 09:02

acasas: Your thread has been moved to CFX forum for one week. Here you will meet wonderful people who are expert in FSI with CFX specially Glenn.

 ghorrocks May 10, 2013 23:53

Sorry, I am no expert on FSI. In fact I will admit that I have never done an FSI simulation with CFX as I do not need to in my line of work :) But I do know a little about CFD and numerical methods in general and many of the questions asked are simple enough for that.

 acasas May 11, 2013 04:46

Where can I find help for this? Any suggestion?

 Far May 11, 2013 04:53

I am sending you some tuts on FSI using CFX. Hope it will help you.

 acasas May 11, 2013 05:14

Hi Sijal. Thanks for it.
I do more or less know how to solve a FSI 1 way problem.
But as I told you, my problem now is inside mechanical workbench. If I do apply a pressure solution as a load to my structure, I CAN get the stress over it with no problem. However if I try to use the convergence method for a better automatic mesh refinement on the higly stressed areas, this option does NOT show up. Instead, if I do apply a simple force on the tip of my wing shaped structure and supress the imported pressure, the convergence option does show up.
Any suggestion?
Thankīs

 Far May 11, 2013 05:50

What do you mean by convergence?