CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > CFX

Parallel Deforming Mesh Simulation

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 28, 2009, 13:39
Default Parallel Deforming Mesh Simulation
  #1
Tristan
Guest
 
Posts: n/a
I'm doing a piston-cylinder simulation with a deforming mesh. I'm using a cylindrical mesh (r,theta,z) with non-uniform spacing in r and z to resolve the cylinder wall and the piston face. I ran the calculation in parallel with 8 partitions and the mesh moves as expected, maintaining constant z grid lines on the cylinder wall as the piston moves toward TDC. However, when I ran it with 14 partitions, the nodes do not maintain the constant z grid lines and I eventually get negative volumes and CFX crashes. Do I have to do something special so that the partitioning doesn't lead to this type of behavior or can I only run deforming mesh simulations with a small number of partitions?

Thanks,

Tristan
  Reply With Quote

Old   January 28, 2009, 18:59
Default Re: Parallel Deforming Mesh Simulation
  #2
Glenn Horrocks
Guest
 
Posts: n/a
Hi,

The number of partitions should not affect the mesh motion. If it definitely is the number of partitions affecting the mesh motion I would report it to your support representative.

Have you tried this on V12 beta?

Glenn Horrocks
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Problems in mesh motion solutor in parallel 4 interDyMFoam. DLC OpenFOAM 0 November 21, 2009 09:54
Mesh used for Combustion Simulation Stein CFX 5 May 14, 2009 19:24
Convergence moving mesh lr103476 OpenFOAM Running, Solving & CFD 30 November 19, 2007 15:09
How to access the mesh quality before simulation? Cheng CFX 2 November 18, 2006 00:56
Automatic Mesh Motion solver michele OpenFOAM Running, Solving & CFD 10 September 26, 2005 09:21


All times are GMT -4. The time now is 02:11.