CFD Online Logo CFD Online URL
Home > Forums > ANSYS Meshing & Geometry

ICEM CFD Scripting

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

LinkBack Thread Tools Display Modes
Old   August 14, 2011, 15:14
Default ICEM CFD Scripting
New Member
Prakash Paudel
Join Date: May 2010
Location: Toronto
Posts: 25
Rep Power: 7
Prakash.Paudel is on a distinguished road
Can someone with ICEM CFD scripting experience give me some insight on whether Tetra or Hexa method is better/easier to script or it does not really matter ??
Prakash.Paudel is offline   Reply With Quote

Old   August 16, 2011, 06:59
Senior Member
Stuart Buckingham
Join Date: May 2010
Location: United Kingdom
Posts: 267
Rep Power: 16
stuart23 will become famous soon enough
Tetra is much easier to script because you do not have to assign anything to geometry. If you are trying to build a complex structured mesh around an object using ICEM scripting, you will probably have to reference individual surfaces, lines or points. Unless you are manually building the geometry in ICEM, the names of the geometry objects are created at the import of the CAD model, and are impossible to predict. Therefore you will find it very difficult trying to assign to geometry if you don't know what it is called. The only exception would be if you can auto assign the blocks, however you can not verify that the blocking has been assigned properly unless you open up the mesh and inspect it.

Have you looked into hexacore meshing? It has SOME of the solver benefits of hexa mesh, but with the ease of use of unstructured meshing.... Just a suggestion.

stuart23 is offline   Reply With Quote

Old   August 17, 2011, 15:53
Default my two cents...
Senior Member
PSYMN's Avatar
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,660
Blog Entries: 1
Rep Power: 36
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
I agree with stuart23. Both use the same basic scripting language, but hexa requires you to be more specific. Tetra can be done globally (although you could get very specific about specific curve or surface parameters if you wanted to be... That said, many users have been very successful with ICEM CFD Hexa scripting and it may even be more commonly done than Tetra scripting.

If you do want to go with Hybrid meshing; instead of HexCore, I would suggest trying Octree tetra converted (12 to 1) to Hexas... I prefer the way it is all conformal and handles size transitions better. You could also try the new TGrid Cutcell method available in ANSYS Meshing.
Please help guide development at ANSYS by filling in these surveys

Public ANSYS ICEM CFD Users Survey

This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)...

CFD Online Users Survey
PSYMN is offline   Reply With Quote


hexa vs tetra, icem cfd, scripting

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
Need help icem cfd kakhtar ANSYS Meshing & Geometry 24 March 24, 2014 14:04
[ICEM] Icem CFD on Linux mechanicaldesign ANSYS Meshing & Geometry 6 February 14, 2013 11:39
Transport mesh from ICEM CFD, to Fluent, to Sysnoise Wieland FLUENT 2 April 15, 2012 06:28
[ICEM] Export unstructured periodic mesh from ICEM CFD to Fluent ivanddd ANSYS Meshing & Geometry 1 February 3, 2011 01:51
Which is better to develop in-house CFD code or to buy a available CFD package. Tareq Al-shaalan Main CFD Forum 10 June 12, 1999 23:27

All times are GMT -4. The time now is 01:44.