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

gambit boundary layer mesh error

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 28, 2006, 09:28
Default gambit boundary layer mesh error
  #1
wenbin
Guest
 
Posts: n/a
Hi,

I wonder has anybody encountered this error, it is a very simple aerofoil geometry, and when I am trying to create the boundary layer mesh on it, it reports:

Unable to attach boundary layer on edge xxx.3 of face xxx, Please consider changing the boundary layer vertex type at vertex xxx of face xxx to SIDE.

What does this mean?

Many thanks
  Reply With Quote

Old   September 28, 2006, 12:41
Default Re: gambit boundary layer mesh error
  #2
Jason
Guest
 
Posts: n/a
Check out the Gambit Manual for vertex type definitions. The three most common types are:

end (the geometry puts the mesh on an inside corner... i.e. the end vertex only has one cell touching it... think of the 4 corners on a rectangle)

corner (the geometry puts the mesh on an outside corner... i.e. the corner vertex has three cells touching it... think of the corner on a backward facing step)

or side (the side vertex has two cells touching it... if you put a vertex on a straight edge, this would be a side vertex... this works just as well if the angle the two edges makes are close to 180degrees... it's as if the edge were continuous).

Vertex definitions are set for each vertex on each face. Gambit makes assumptions of the vertex types based on the angle edges make with one another. Sometimes the vertex type Gambit chose doesn't match what is needed for the mesh. That's what the error message is telling you. To change the vertex type, go to the vertex type in the face mesh commands and try changing vertex XXX of face XXX to SIDE. You'll have to find which face it's talking about, and which vertex on the face.

Hope this helps, and good luck, Jason
  Reply With Quote

Old   September 29, 2006, 06:25
Default Re: gambit boundary layer mesh error
  #3
Wenbin
Guest
 
Posts: n/a
many thanks - problem solved.
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to install CGNS under windows xp? lzgwhy Main CFD Forum 1 January 11, 2011 18:44
OpenFOAM on MinGW crosscompiler hosted on Linux allenzhao OpenFOAM Installation 127 January 30, 2009 19:08
Problem with compile the setParabolicInlet ivanyao OpenFOAM Running, Solving & CFD 6 September 5, 2008 20:50
user subroutine error CFDUSER CFX 2 December 9, 2006 06:31
Boundary Layer Mesh in GAMBIT Jane Wilkinson FLUENT 2 December 4, 2006 09:36


All times are GMT -4. The time now is 16:15.