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

Solution on hexa mesh vs solution on tetra mesh

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 8, 2011, 18:55
Default Solution on hexa mesh vs solution on tetra mesh
  #1
Senior Member
 
Join Date: Oct 2010
Location: Zurich
Posts: 176
Rep Power: 6
Chander is on a distinguished road
Hi,

I have a block structured hexa mesh (made in ICEM CFD) for my geometry and a converged solution for fluid flow and conjugate heat transfer on this mesh (solved in CFX).

I have not used tetra mesh with prism layers before for fluid flow. I now want mesh the same geometry with the automated tetra + prism layer mesh in ICEM CFD and solve the same problem as above for this mesh and then compare the results with those on the block structured hexa mesh.

How should I ensure that any difference in results that I finally get is only due to change in nature of mesh from hexa to tetra and not other factors like mesh density etc.?

Thanks for your inputs
Chander is offline   Reply With Quote

Old   December 9, 2011, 05:22
Default
  #2
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,556
Rep Power: 83
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
Do a mesh sensitivity study of both meshing options separately. You can only compare fully mesh independent meshes of each type to get a meaningful result.
ghorrocks is offline   Reply With Quote

Old   December 10, 2011, 10:35
Default
  #3
Senior Member
 
Join Date: Oct 2010
Location: Zurich
Posts: 176
Rep Power: 6
Chander is on a distinguished road
Thanks Glen for your reply. Yes, that makes sense. I will do grid independence studies on both types pf meshes as per your suggestion before comparing the results.

Best regards.
Chander is offline   Reply With Quote

Reply

Tags
cfx, hexa mesh, tetra mesh

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
Mesh motion with Translation & Rotation Doginal CFX 2 January 12, 2014 07:21
Naca 0012 (compressible and inviscid) flow convergence problem bipulsaha FLUENT 1 July 6, 2011 07:51
Convergence moving mesh lr103476 OpenFOAM Running, Solving & CFD 30 November 19, 2007 15:09
dynamic mesh on a hexa grid Manoj Kumar FLUENT 0 August 21, 2007 07:41
How to control Minximum mesh space? hung FLUENT 7 April 18, 2005 09:38


All times are GMT -4. The time now is 14:06.