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Showing results 1 to 9 of 9 Search took 0.00 seconds. Search: Posts Made By: Zymon

Forum: CFX January 26, 2012, 08:33

Replies: 14 Divergence with a flexible structure in a FSI case Views: 3,820 Posted By Zymon Can you please explain this in more detail? How... Can you please explain this in more detail? How does the mass flux pressure coefficent change the convergence path in one time step? As far as I understand, the instabilities occur because the...

Forum: CFX January 6, 2012, 09:30

Replies: 14 Divergence with a flexible structure in a FSI case Views: 3,820 Posted By Zymon Hi stumpy, just wanted to inform you that it... Hi stumpy, just wanted to inform you that it is working now thanks to all of your advices. I also changed the mesh and contact parameters of the FEM setting a bit. Now the structural part is also...

Forum: CFX November 25, 2011, 03:00

Replies: 14 Divergence with a flexible structure in a FSI case Views: 3,820 Posted By Zymon Wow, thanks a lot for all your advices. I will... Wow, thanks a lot for all your advices. I will try it today and tell you later on about the progress. Another short question: What should I set for the 'Variables (for sources and relevant sink...

Forum: CFX November 24, 2011, 10:56

Replies: 14 Divergence with a flexible structure in a FSI case Views: 3,820 Posted By Zymon What about using a lower mass flux pressure... What about using a lower mass flux pressure coefficient in combination with a lower relaxation factor for the force? Maybe there is an optimal compromise between stability, accuracy and computational...

Forum: CFX November 24, 2011, 09:48

Replies: 14 Divergence with a flexible structure in a FSI case Views: 3,820 Posted By Zymon Thanks a lot stumpy for your help stumpy. I have... Thanks a lot stumpy for your help stumpy. I have seen from the other posts that you have a good knowledge of these kinds of problems. I attached the ccl file to this post. A mass flux pressure...

Forum: CFX November 24, 2011, 07:16

Replies: 14 Divergence with a flexible structure in a FSI case Views: 3,820 Posted By Zymon Where can I set the mass? And should I use the... Where can I set the mass? And should I use the k-Matrix Damping Multiplier for the Membrane? Thanks a lot!

Forum: CFX November 24, 2011, 03:35

Replies: 14 Divergence with a flexible structure in a FSI case Views: 3,820 Posted By Zymon Ok, short update. I increased the mass flux... Ok, short update. I increased the mass flux pressure coefficient to 1e5 and also set the relaxation factors to reasonable values of 0.6 (higher value as before). Now the force at the interface stays...

Forum: CFX November 24, 2011, 02:59

Replies: 14 Divergence with a flexible structure in a FSI case Views: 3,820 Posted By Zymon Now I found out that the CNCHECK,AUTO Command in... Now I found out that the CNCHECK,AUTO Command in transient structural is killing any FSI simulation I tested. However, for the FEM simulation it is quite helpful. So, switching to CNCHEK,ADJUST the...

Forum: CFX November 23, 2011, 11:05

Replies: 14 Divergence with a flexible structure in a FSI case Views: 3,820 Posted By Zymon Divergence with a flexible structure in a FSI case Hi, I need your help. I am dealing with this problem for a couple of weeks. I am simulating a membrane pump. A pressure plate presses a membrane into the fluid chamber. Due to the reduction in...

Showing results 1 to 9 of 9

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