CFD Online Logo CFD Online URL
Home > Forums > CFX

Element quality

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

LinkBack Thread Tools Display Modes
Old   December 6, 2006, 08:59
Default Element quality
Posts: n/a
Hello, I have a more general question concerning the mesh generation. However since I am using CFX I will post it here.

I know that it is important to generate elements with a "quality" as high as possible (e.g. for CFX at least 0.15, if possible). I also know that "high quality" means that the angles of the elements are supposed to be as good, i.e. as similar as possible (Prism 90deg, Tetra 60deg, etc), right?

What I do not understand is simply the reason. If I am using a CV-approach (like in CFX) my equations will be "made out of" expressions including CV-face-points. But why is it important to have faces that are oriented towards each other as similar as possible?

Regards Andreas
  Reply With Quote

Old   December 6, 2006, 10:07
Default Re: Element quality
Posts: n/a
Avoiding excessive numerical diffusion amongst other things.
  Reply With Quote

Old   December 7, 2006, 10:14
Default Re: Element quality
Posts: n/a
Alright, thank you.But what role play the element angles for numerical diffusion? If the answer is too lenghty for this forum I would be very pleased to get the titles of some good textbooks/references that deal with the issues of control volumes and element quality.

Thanks and regards Andreas
  Reply With Quote


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
gmshToFoam unhandled element flowris Open Source Meshers: Gmsh, Netgen, CGNS, ... 1 June 25, 2015 09:35
autoPatch error, mesh quality related...? Alexvader OpenFOAM 0 October 6, 2011 17:57
mesh file for flow over a circular cylinder Ardalan Main CFD Forum 6 April 17, 2010 23:40
Tetras, Prims, BL-resolution and element quality fonzie CFX 2 November 30, 2009 04:33
Generate allHex mesh element quality hsieh OpenFOAM Running, Solving & CFD 3 May 31, 2006 13:38

All times are GMT -4. The time now is 09:18.