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

decomposePar not decomposing refinement history

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 8, 2010, 14:23
Default decomposePar not decomposing refinement history
  #1
Senior Member
 
kmooney's Avatar
 
Kyle Mooney
Join Date: Jul 2009
Location: Amherst, MA USA - San Diego, CA USA
Posts: 268
Rep Power: 8
kmooney is on a distinguished road
Hi all,

I have been getting remeshing inconsistancies between serial and parallel runs when using interDyMFoam (1.6.x and 1.7.x) and think that I have figured out the issue.

I have been using interDyMFoam in serial as somewhat of a preprocessor/meshing tool to get a fine mesh around my interface. Once I had the mesh built I decomposed it and attempted to run it in parallel only to have dynamicRefineMesh re-refine the cells that were already adequate. It seems that the refinementHistory file is not being decomposed and passed into the processorX folders.

Is there a way to readily decompose that file?
kmooney is offline   Reply With Quote

Old   July 9, 2010, 05:01
Default
  #2
Super Moderator
 
Mattijs Janssens
Join Date: Mar 2009
Posts: 1,416
Rep Power: 16
mattijs is on a distinguished road
Correct, the refinementHistory is not decomposed.

(the problem with it is that the history can refer to local cells only. So a valid decomposition would have to make sure that it keeps a cluster of cells originating from the same cell together. In other words base the decomposition on the coarsest level (= starting level). Not easy and then one might as well just decompose the starting mesh and preprocess in parallel)

Mattijs
mattijs is offline   Reply With Quote

Old   July 9, 2010, 09:48
Default
  #3
Senior Member
 
kmooney's Avatar
 
Kyle Mooney
Join Date: Jul 2009
Location: Amherst, MA USA - San Diego, CA USA
Posts: 268
Rep Power: 8
kmooney is on a distinguished road
Thanks for the reply!

It does seem that that would be a non-trivial problem. Preprocessing in parallel seems to be working. Thanks a lot.

Kyle
kmooney 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
snappyHexMesh not refining surfaces Hydro1004 OpenFOAM 3 August 29, 2012 11:56
DecomposePar unequal number of shared faces maka OpenFOAM Pre-Processing 6 August 12, 2010 09:01
external flow with snappyHexMesh chelvistero OpenFOAM 11 January 15, 2010 20:43
decomposePar hierarchicalCoeffs maka OpenFOAM Running, Solving & CFD 1 August 14, 2008 17:39
Mesh Refinement JY CD-adapco 7 September 19, 2002 13:37


All times are GMT -4. The time now is 06:38.