CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > ANSYS Meshing & Geometry

General ellipsoidal geometry in Gambit?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 23, 2009, 15:51
Default General ellipsoidal geometry in Gambit?
  #1
LJB
New Member
 
Lee
Join Date: Sep 2009
Posts: 1
Rep Power: 0
LJB is on a distinguished road
Hello,

Perhaps I'm overlooking something obvious (I hope), but I can't seem to find a simple way (i.e. without resorting to spline surfaces) to obtain the geometry I require in Gambit. Essentially, I need a volume which is a general ellipsoid, that is, one which may in general have different values for the lengths of each of the three semi-axes. It is straightforward to create an ellipsoid with two of the semi-axes of equal length by rotating a half-ellipse, but the general case does not seem so easy. It seems like this shouldn't be too difficult; in any reasonably-designed program, one could simply enter the equation of the surface, but unfortunately, I am forced to work with Gambit. Does anyone know of a simple way to do this? Thanks.

Lee
LJB is offline   Reply With Quote

Old   September 28, 2009, 02:13
Default
  #2
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,812
Rep Power: 29
-mAx- will become famous soon enough
create a 2d ellipse,
delete the surface BUT keep edges
create an edge which will be your revolution axis (you will have to split the ellipse edge --> ratio 0.5).
delete the bottom edges of the half-ellipse
create the surface of the upper side
create volume with revolution around edge (revolve face)
that's it
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- 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
sofc geometry drawing with gambit. shunjie FLUENT 0 February 1, 2008 04:47
geometry of car in gambit aggelos Main CFD Forum 8 October 6, 2007 16:33
vitual _ real deneb FLUENT 3 January 22, 2007 04:31
How to construct complex 3D geometry using GAMBIT? Feng FLUENT 5 October 11, 2005 04:13
problem about Importing geometry in Gambit Hua Gu FLUENT 3 April 2, 2002 13:24


All times are GMT -4. The time now is 16:21.