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

[Other] Workbench non-manifold body

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

LinkBack Thread Tools Display Modes
Old   July 6, 2009, 19:27
Default Workbench non-manifold body
New Member
Adam Loesch
Join Date: May 2009
Posts: 8
Rep Power: 8
aloesch is on a distinguished road
I am attempting to make a CFD mesh in Workbench. In the DesignModeler, I import my igs surface body and create a primitive prism. When I try to do a Boolean subtract of the surface body from the solid prism, the operation fails with a "Error: Operation would result in non-manifold bodies." What exactly does this mean, and what type of corrective action can/should I implement?
aloesch is offline   Reply With Quote

Old   July 7, 2009, 10:39
Default Baffles me.
Senior Member
PSYMN's Avatar
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,662
Blog Entries: 1
Rep Power: 36
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
DesignModeler does not yet support the subtraction of a surface from a solid (aka, a baffle). This is coming at 12.1 (due out in Q4 2009).

If your surface body was actually supposed to be a closed solid, you will need to sew it into a solid first. Then subtract the solid from the primative solid.

If you were trying to have a baffle, you have several options. You could use it to completely chop the primative solid; you will need add some other surfaces to make the segmentation complete and then adjust the contact to block flow only along your baffle… I haven’t actually done that myself, but I heard it was possible. Another option is to extrude the zero thickness wall into a thin wall. You can then subtract this thin solid from the primative solid. This may better reflect your actual model, but the thin edge may raise your mesh count and/or reduce your quality.

PSYMN is offline   Reply With Quote

Old   July 3, 2013, 19:05
Default Non-manifold bodies
New Member
Join Date: Jul 2013
Posts: 1
Rep Power: 0
Wiki is on a distinguished road

I have made a wind turbine model but in ANSYS design modellor, I am constantly receiving an error message "operation results in non-manifold bodies". Could anyone suggest me a remedial action? Thank you
Wiki is offline   Reply With Quote

Old   July 4, 2013, 15:40
Super Moderator
diamondx's Avatar
Ghazlani M. Ali
Join Date: May 2011
Location: Canada
Posts: 1,291
Blog Entries: 23
Rep Power: 20
diamondx will become famous soon enough
is it during the boolean operation ?
New to ICEM CFD, try this document -->
diamondx is offline   Reply With Quote


bodies, body, non-manifold, workbench

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
ANSYS Workbench on "Uncertified" Linux Distros hsr CFX 239 September 26, 2015 08:21
Macro command combatibility ANSYS workbench Tassos CFX 6 January 13, 2014 05:19
Body force at the cell face Souviktor Fluent UDF and Scheme Programming 0 March 31, 2009 08:54
Workbench Transient Omer CFX 0 January 15, 2007 15:21
allowable body size in ANSYS Workbench 8.1 Atit Koonsrisuk CFX 1 January 5, 2005 13:40

All times are GMT -4. The time now is 14:26.