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

fatal error

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 17, 2004, 05:01
Default fatal error
  #1
helen
Guest
 
Posts: n/a
Hi, Im new to CFX so dont know all that much about meshing yet. I've generated a solid using data from a laser scanner, but keep getting the fatal error: "Unable to match triangles across branch out" when creating the surface mesh. Is this a problem with the geometry or can it be solved by changing mesh parameters/controls? hope someone can help!

thanks, helen
  Reply With Quote

Old   February 19, 2004, 13:20
Default Re: fatal error
  #2
Bob
Guest
 
Posts: n/a
Hi Helen, are you importing the "solid" into the ICEM4CFD program or are you trying to use build to generate the mesh ? What file type are you trying to import?Which version of CFX are you using ? The more information you provide the better the help people can give you ? Bob
  Reply With Quote

Old   February 19, 2004, 13:43
Default Re: fatal error
  #3
helen
Guest
 
Posts: n/a
I'm importing a solid iges file (looks like a pipe with a bulge in it leading into a y-bend) into CFX5.6 and trying to mesh it there(after edge-matching the surfaces around the bifurcation region and making a b-rep). It is then that Im getting the previously mentioned error. I have also tried importing it as a parasolid to ICEM4CFD (without much luck) and importing an stl mesh directly, but have been unable to import the stl mesh (being asked to open some type of .uns file?)

Hope someone can help - project deadline is next week!

helen
  Reply With Quote

Old   February 20, 2004, 11:26
Default Re: fatal error
  #4
Johnson
Guest
 
Posts: n/a
Hi Helen

I've seen this error once before in Build, and it happened trying to mesh some small closed cylindrical surfaces in the model. I think we found that the problem was tolerance related, either in the geometry, or in the mesh settings.

My advice would be to:

- try reducing the mesh length scale in the regions where you're getting the problem (should be easy to identify from the error messages).

- check that the model tolerance you're using is appropriate for the geometry (smaller than 1/10 th of your smallest edge length).

Hope this helps,

Johnson
  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
CGNS Compiling Diego Main CFD Forum 17 December 21, 2014 02:40
polynomial thermophysical properties II sebastian OpenFOAM Running, Solving & CFD 53 April 10, 2014 05:45
UDF: DEFINE_CG_MOTION for vertical jump motion of an electrode! alban Fluent UDF and Scheme Programming 2 June 8, 2010 18:54
Installation of Netgen in SuSE Linux 92 edvardsenpriv Open Source Meshers: Gmsh, Netgen, CGNS, ... 23 January 16, 2009 07:12
Problem with compile the setParabolicInlet ivanyao OpenFOAM Running, Solving & CFD 6 September 5, 2008 20:50


All times are GMT -4. The time now is 04:09.