No convergence method available in ANYS FSI problems?

acasas · May 10, 2013, 07:54

Hi , I can´t 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?
Thank´s a lot

Far · May 10, 2013, 08:10

2way FSI with Ansys workbench

acasas · May 10, 2013, 08:28

mmm, don´t understand. Why 2 way? i´ts 1 way in my case.
thank´s

acasas · May 10, 2013, 08:32

by the way, I see my post have been moved. How to find where? And why it´s beeing moved? I have posted under Ansys forum directory, isn´t the right way to do it?
Thank´s

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

Sad for me.
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.

uploading will take some time around 12-14 hrs

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?
Thank´s

Far · May 11, 2013, 05:50

What do you mean by convergence?

http://www.padtinc.com/blog/the-focu...al-information

Far · Yesterday, 14:29

downloaded files?

acasas · Yesterday, 14:39

Hey Sijal!

Just downloading right now. thank´s

May 10, 2013, 07:54	No convergence method available in ANYS FSI problems?	#1
acasas New Member Jaume Casas Join Date: May 2013 Location: Barcelona Posts: 27 Rep Power: 2	Hi , I can´t 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? Thank´s a lot

May 10, 2013, 08:10		#2
Far Super Moderator Sijal Ahmed Memon (turboenginner@gmail.com) Join Date: Mar 2009 Location: Islamabad Pakistan Posts: 3,065 Blog Entries: 4 Rep Power: 30	2way FSI with Ansys workbench __________________ Best Regards Far http://cfd-consultancy.webs.com/

May 10, 2013, 09:02		#5
Far Super Moderator Sijal Ahmed Memon (turboenginner@gmail.com) Join Date: Mar 2009 Location: Islamabad Pakistan Posts: 3,065 Blog Entries: 4 Rep Power: 30	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. __________________ Best Regards Far http://cfd-consultancy.webs.com/

May 11, 2013, 04:53		#8
Far Super Moderator Sijal Ahmed Memon (turboenginner@gmail.com) Join Date: Mar 2009 Location: Islamabad Pakistan Posts: 3,065 Blog Entries: 4 Rep Power: 30	I am sending you some tuts on FSI using CFX. Hope it will help you. uploading will take some time around 12-14 hrs __________________ Best Regards Far http://cfd-consultancy.webs.com/

May 11, 2013, 05:50		#10
Far Super Moderator Sijal Ahmed Memon (turboenginner@gmail.com) Join Date: Mar 2009 Location: Islamabad Pakistan Posts: 3,065 Blog Entries: 4 Rep Power: 30	What do you mean by convergence? http://www.padtinc.com/blog/the-focu...al-information __________________ Best Regards Far http://cfd-consultancy.webs.com/

May 10, 2013, 08:28		#3
acasas New Member Jaume Casas Join Date: May 2013 Location: Barcelona Posts: 27 Rep Power: 2	mmm, don´t understand. Why 2 way? i´ts 1 way in my case. thank´s

May 10, 2013, 08:32		#4
acasas New Member Jaume Casas Join Date: May 2013 Location: Barcelona Posts: 27 Rep Power: 2	by the way, I see my post have been moved. How to find where? And why it´s beeing moved? I have posted under Ansys forum directory, isn´t the right way to do it? Thank´s

May 10, 2013, 23:53		#6
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 6,940 Rep Power: 59	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.

May 11, 2013, 04:46		#7
acasas New Member Jaume Casas Join Date: May 2013 Location: Barcelona Posts: 27 Rep Power: 2	Sad for me. Where can I find help for this? Any suggestion?

May 11, 2013, 05:14		#9
acasas New Member Jaume Casas Join Date: May 2013 Location: Barcelona Posts: 27 Rep Power: 2	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? Thank´s

Yesterday, 14:29		#11
Far Super Moderator Sijal Ahmed Memon (turboenginner@gmail.com) Join Date: Mar 2009 Location: Islamabad Pakistan Posts: 3,065 Blog Entries: 4 Rep Power: 30	downloaded files? __________________ Best Regards Far http://cfd-consultancy.webs.com/

Yesterday, 14:39		#12
acasas New Member Jaume Casas Join Date: May 2013 Location: Barcelona Posts: 27 Rep Power: 2	Hey Sijal! Just downloading right now. thank´s

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
force convergence problems in CFX 6DOF rigid body solver	ajay_ks	CFX	8	March 25, 2013 05:02
Implicit method of FSI	cjtune	CD-adapco	0	March 12, 2003 12:07
convergence problems	david aquilina	CD-adapco	4	October 27, 2000 09:18
convergence acceleration by preconditioning method	Atit Koonsrisuk	Main CFD Forum	4	June 5, 2000 06:21
Has the pressure correction method problems?	X. Ye	Main CFD Forum	17	September 1, 1999 16:14