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

[ICEM] Split O grid

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

LinkBack Thread Tools Display Modes
Old   July 1, 2010, 08:09
Default Split O grid
Senior Member
Join Date: Sep 2009
Location: France
Posts: 323
Rep Power: 15
BrolY will become famous soon enough

Two questions about blocking:
1) Is it better to smooth the pre-mesh before creating the O-grid?

2) I want to split my blocks to have a better control on the O grid.
Is is better to split the O-grid blocks or to split the blocks before doing the O-grid?

PSYMM's answer:

Nope, there is no point in smoothing the premesh before you are done blocking. When you recompute the premesh it tosses out the smoothed mesh and recomputes it from the blocking. However, you should make sure that your blocking is as good as it can be before adding complexity like an Ogrid.

For instance, make sure all the edge are associated and in place. If you create the ogrid before moving the original verts into place, the ogrid verts are created relative to the original verts, so you will now have to move two sets of verts into place. If you split an edge before associating the original to a long curve, you will now have to associate two edge segments instead of just one... Get the idea? Also, it gets harder to see what you are doing if you wait until your blocking is very complex before cleaning things up.

BrolY is offline   Reply With Quote

Old   July 2, 2010, 09:23
Retired from CFD Online
PSYMN's Avatar
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,665
Blog Entries: 1
Rep Power: 39
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
Thanks again for posting my reply online. Hopefully it will benefit others also.
PSYMN is offline   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
MapFields to New Grid For Extreme Grid Deformations due to Body Motion albcem OpenFOAM 0 May 5, 2009 14:17
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55
GRID TO GRID INTERPOLATION in FLUENT calogero FLUENT 3 June 4, 2003 08:32
Combustion Convergence problems Art Stretton Phoenics 5 April 2, 2002 05:59
Troubles modelling flow through a grid Hans Klaufus CFX 1 June 28, 2000 16:43

All times are GMT -4. The time now is 07:30.