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

How to avoid poor Jacobian in Gridgen??

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 4, 2008, 20:59
Default How to avoid poor Jacobian in Gridgen??
  #1
Hani
Guest
 
Posts: n/a
Hi all,

Any body there has a good experience in meshing with Gridgen? I was asked to generate 2 layers of constant spacing (dy=0.0004mm)on the boundary of DLR-F6 aircraft 1/2 model, while maintaining skewness less than 0.9. I used both structured and unstructured grid to mesh the surfaces of the aircraft. However, when I extrude these two layers using block domain extrusion, poor jacobians are resulted at cornered edges which in turn would result to highly skewed cells (more than 0.9 skewness). Any body knows how to solve this problem? Or perhaps provide some guidelines of how to avoid poor jacobians in Gridgen?

Thanks a lot for your kind help!
  Reply With Quote

Old   November 8, 2008, 14:35
Default Re: How to avoid poor Jacobian in Gridgen??
  #2
John Chawner
Guest
 
Posts: n/a
Hi Hani,

Yes, there are many guidelines and techniques for how to use extrusion for both structured and unstructured meshes and achieve unskewed meshes.

There is insufficient information in your post for me to make a meaningful recommendation so I suggest you email your question to support@pointwise.com so that our engineers can help you.

Best regards.
  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
How to import NACA 0012 Profile in Gridgen maplepink Main CFD Forum 17 May 7, 2013 13:01
gridgen memory allocation problem ziad Pointwise & Gridgen 5 February 27, 2010 20:16
Glyph command to close GRIDGEN? chris Pointwise & Gridgen 2 March 25, 2007 14:22
Gridgen question vishwas Pointwise & Gridgen 2 February 25, 2006 16:05
CFX & Gridgen user. Please help Jane CFX 1 March 15, 2004 00:17


All times are GMT -4. The time now is 13:22.