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

ICEM->Update sizes & Recompute ?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 11, 2005, 08:46
Default ICEM->Update sizes & Recompute ?
  #1
Larvanymph
Guest
 
Posts: n/a
Hi all, In ICEM_CFD.CFX > Blocking > Pre-mesh params, there're functions - update all , Keep distribution and Keep Counts, and I understand their meaning. But I'm just comfused with the Recompute function(in the advanced selection of Pre-Mesh in tree). When should I need to do the Recompute? When should I need to do the Update? Thanks in advance !
  Reply With Quote

Old   April 11, 2005, 15:16
Default Re: ICEM->Update sizes & Recompute ?
  #2
deLuther
Guest
 
Posts: n/a
Recompute function in tree needed when you change parameters for individual edges or meshing settings(type of unstructured meshes for example, tolerance near wall). And need to update your mesh. It is different story than update.
  Reply With Quote

Old   April 11, 2005, 19:05
Default Re: ICEM->Update sizes & Recompute ?
  #3
Larvanymph
Guest
 
Posts: n/a
Hi deLuther, Thanks for response. But I'm still not very clear about it. For example, I change the nodes number from 9 to 21 on an edge, and then do either option a or b, it will get the same result. option a: "Recompute" in tree > Mesh (Load from blocking) and replace option b: "Update sizes" > "Keep Counts" > Mesh (Load from blocking) and replace

Does "Recompute" include the function of "Update sizes" or just "Update sizes" provides more option for user than Recompute? Thanks --L.N.
  Reply With Quote

Old   April 12, 2005, 04:37
Default Re: ICEM->Update sizes & Recompute ?
  #4
deLuther
Guest
 
Posts: n/a
I think that "Update size" you need at first steps after building of topology - to introduce initial edge parameters distribution from geometry sizes. If you fine tune edge parameters closer to the end of mesh process, than using Update size can lead (sometimes) to catastrophic results. If you chose Update sizes->Keep counts, than if geometry parameters was changed you can get other distribution (keeping desired counts). Like, say, tube geometry - you set new sizes on surfaces, including height,than mesh (with keep counts) closer to the ends will be denser(at side surface). And elements at middle will be longer than desired. So I use update sizes on initial steps of meshing, when I change geometry and trying to adopt blocking to that geometry.
  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
[ANSYS Meshing] Workbench 13: Structured Hexa Meshes rooftop ANSYS Meshing & Geometry 18 May 13, 2014 03:57
PEM Fuel cell module meshes. ICEM vs workbench aarvay FLUENT 11 June 25, 2013 06:06
[ICEM] Help with fixing imported IGES model siw ANSYS Meshing & Geometry 24 August 24, 2010 11:22
Design Modeler to ICEM..... Joe CFX 0 January 24, 2008 03:39
ICEM 10 mesh scale foe CFX Korsh Mik CFX 2 October 7, 2005 09:07


All times are GMT -4. The time now is 03:58.