CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Structural Mechanics

No convergence method available in ANYS FSI problems?

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   May 10, 2013, 07:54
Default No convergence method available in ANYS FSI problems?
  #1
Member
 
acasas's Avatar
 
Antonio Casas
Join Date: May 2013
Location: world
Posts: 85
Rep Power: 4
acasas is on a distinguished road
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
acasas is offline   Reply With Quote

Old   May 10, 2013, 08:10
Default
  #2
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,959
Blog Entries: 6
Rep Power: 39
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
2way FSI with Ansys workbench
Far is offline   Reply With Quote

Old   May 10, 2013, 08:28
Default
  #3
Member
 
acasas's Avatar
 
Antonio Casas
Join Date: May 2013
Location: world
Posts: 85
Rep Power: 4
acasas is on a distinguished road
mmm, donīt understand. Why 2 way? iīts 1 way in my case.
thankīs
acasas is offline   Reply With Quote

Old   May 10, 2013, 08:32
Default
  #4
Member
 
acasas's Avatar
 
Antonio Casas
Join Date: May 2013
Location: world
Posts: 85
Rep Power: 4
acasas is on a distinguished road
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
acasas is offline   Reply With Quote

Old   May 10, 2013, 09:02
Default
  #5
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,959
Blog Entries: 6
Rep Power: 39
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
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.
Far is offline   Reply With Quote

Old   May 10, 2013, 23:53
Default
  #6
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,931
Rep Power: 85
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
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.
ghorrocks is offline   Reply With Quote

Old   May 11, 2013, 04:46
Default
  #7
Member
 
acasas's Avatar
 
Antonio Casas
Join Date: May 2013
Location: world
Posts: 85
Rep Power: 4
acasas is on a distinguished road
Sad for me.
Where can I find help for this? Any suggestion?
acasas is offline   Reply With Quote

Old   May 11, 2013, 04:53
Default
  #8
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,959
Blog Entries: 6
Rep Power: 39
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
I am sending you some tuts on FSI using CFX. Hope it will help you.

uploading will take some time around 12-14 hrs
Far is offline   Reply With Quote

Old   May 11, 2013, 05:14
Default
  #9
Member
 
acasas's Avatar
 
Antonio Casas
Join Date: May 2013
Location: world
Posts: 85
Rep Power: 4
acasas is on a distinguished road
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
acasas is offline   Reply With Quote

Old   May 11, 2013, 05:50
Default
  #10
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,959
Blog Entries: 6
Rep Power: 39
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
What do you mean by convergence?

http://www.padtinc.com/blog/the-focu...al-information
Far is offline   Reply With Quote

Old   May 12, 2013, 14:29
Default
  #11
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,959
Blog Entries: 6
Rep Power: 39
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
downloaded files?
Far is offline   Reply With Quote

Old   May 12, 2013, 14:39
Default
  #12
Member
 
acasas's Avatar
 
Antonio Casas
Join Date: May 2013
Location: world
Posts: 85
Rep Power: 4
acasas is on a distinguished road
Hey Sijal!

Just downloading right now. thankīs
acasas is offline   Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


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 13:07
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


All times are GMT -4. The time now is 17:35.