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

problem with skewness

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 13, 2010, 02:24
Default problem with skewness
  #1
New Member
 
christophe
Join Date: Aug 2009
Posts: 24
Rep Power: 6
jjchristophe is on a distinguished road
I have to hold cfd analysis with extracted geometry.
geometry is extracted and surface mesh is created under Mimics, then the volume mesh is generated under gridgen.
Under Mimics, the coefficient of skewness (i mean for the triangles' angles) is over 0.4, which mean under 0.6 for fluent (under mimics, skewness is equal to 1-(skewness coefficient under fluent)). under Gridgen, when I generate the mesh, I set the maximum skewness at 0.7.
thing is, under fluent, when I check the case, it says that skewness exceed 0.98 for some elements.
Is it normal?
Is there anyway to fix that?
jjchristophe is offline   Reply With Quote

Old   January 14, 2010, 21:22
Default
  #2
New Member
 
christophe
Join Date: Aug 2009
Posts: 24
Rep Power: 6
jjchristophe is on a distinguished road
anybody knows if I should use the SIMPLEC algorithm with a skewness correction, and in the case, for 22 cells exceeding 0.98 for the skewness, should I set 22 for the skewness correction?
jjchristophe 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
UDF compiling problem Wouter Fluent UDF and Scheme Programming 6 June 6, 2012 04:43
Incoherent problem table in hollow-fiber spinning Gianni FLUENT 0 April 5, 2008 10:33
natural convection problem for a CHT problem Se-Hee CFX 2 June 10, 2007 06:29
Adiabatic and Rotating wall (Convection problem) ParodDav CFX 5 April 29, 2007 19:13
Is this problem well posed? Thomas P. Abraham Main CFD Forum 5 September 8, 1999 14:52


All times are GMT -4. The time now is 09:01.