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

left-handed-faces detected in tgrid

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

Like Tree1Likes
  • 1 Post By poya0070

Reply
 
LinkBack Thread Tools Display Modes
Old   August 26, 2008, 07:00
Default left-handed-faces detected in tgrid
  #1
Ârnold
Guest
 
Posts: n/a
Hallo,

I´ve created a mesh and checked it in tgrid. During the checking-process a prompt-message appeared: "left-handed-faces" After this I get the message: "Check mesh failed"

How can I fix this problem and improve my mesh?

Thanks in advance

Arnold
  Reply With Quote

Old   August 26, 2008, 11:31
Default Re: left-handed-faces detected in tgrid
  #2
wanghuiru
Guest
 
Posts: n/a
use this command grid/modify/repair-face-handedness

  Reply With Quote

Old   August 27, 2008, 03:43
Default Re: left-handed-faces detected in tgrid
  #3
Ârnold
Guest
 
Posts: n/a
Hallo Wanghuiru,

thanks for your reply.

I´m not a professional in handling tgrid yet. Should I type in this command? I tried it, but there was an error prompt like: error: eval: unbound avriable

error: Object ...

First we should compare our versions of tgrid. I´m using tgrid-version 4.0.16

Actually I have no button called grid, modify or repair-face-handedness.

Greetings

  Reply With Quote

Old   August 27, 2008, 04:25
Default Re: left-handed-faces detected in tgrid
  #4
Ârnold
Guest
 
Posts: n/a
Hallo Wanghuiru,

I did the command. I have to type mesh/modify/.. . But the command repair-face-handedness does not exist in my version of tgrid! I tried it in fluent, there I have this command.

It seems, that the mesh is to bad. To remesh the geometry might be the better choice.

Thanks for your help

Árnold
  Reply With Quote

Old   August 30, 2013, 13:03
Default
  #5
New Member
 
poya
Join Date: Jun 2013
Posts: 4
Rep Power: 4
poya0070 is on a distinguished road
Quote:
Originally Posted by Ârnold
;152993
Hallo,

I´ve created a mesh and checked it in tgrid. During the checking-process a prompt-message appeared: "left-handed-faces" After this I get the message: "Check mesh failed"

How can I fix this problem and improve my mesh?

Thanks in advance

Arnold
hi
You need to make export double precision files. In the export preferences, change "single" to "double" for Export precision. This must be done before creating a mesh.
You will also need to run Fluent in double precision
Left-handed faces often occur when two dimensions are large compared to the third. Modelling cities and landscapes can produce this problem in single precision.
Durga Sravan likes this.
poya0070 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
left handed faces Vincent FLUENT 1 January 8, 2006 02:47
TGrid-left handed faces giorgio FLUENT 0 January 17, 2005 13:11
Left Handed faces ff FLUENT 4 October 17, 2003 09:34
how to treat left handed faces xiang FLUENT 1 March 10, 2003 08:08
MESH CHECK FAILED right/left handed faces Rodrigo Madariaga FLUENT 2 June 28, 2001 10:15


All times are GMT -4. The time now is 21:11.