CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Mesh overlap/internal wall

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

LinkBack Thread Tools Display Modes
Old   December 4, 2000, 21:05
Default Mesh overlap/internal wall
Posts: n/a
This is a simplified version of a problem that I've encountered. I've tried numerous solutions, but with no luck.

Suppose that you have 2 cylinders, created with the same length, but one has a radius of 1, and the other has a radius of 2 (both oriented along the +Z direction). Then you create a similar set of two cylinders also oriented along the +Z direction, but translated so that there is a one unit overlap between the first set and the second set of cylinders. Think of this as two overlapping pipes. To create the solid part of the pipe, you take cylinder 1 - cylinder 2 (for both sets), mesh this subtracted volume and mesh the inner pipe. The you export from Gambit to Fluent.

The problem I've found is that the inside faces remain as walls, even though the volumes have been specified as fluids. I have tried a number of ways to get around this problem but with no success. For this simple problem, it's easy to unite the volumes and then mesh, but for a more complicated geometry this doesn't work. Any suggestions?
  Reply With Quote

Old   December 5, 2000, 01:56
Default Re: Mesh overlap/internal wall
Posts: n/a
I don't understand your problem. if im right, maybe you meant inside face is overlapping face. if that so, you really cannot specify juction like that. the other way is

1. draw a long 2 pipe 2. Draw a face anywhere u like 3. then split pipe with face 4. specify splitting face as interior

  Reply With Quote


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
Moving mesh Niklas Wikstrom (Wikstrom) OpenFOAM Running, Solving & CFD 122 June 15, 2014 06:20
Mesh motion with Translation & Rotation Doginal CFX 2 January 12, 2014 07:21
external flow with snappyHexMesh chelvistero OpenFOAM 11 January 15, 2010 20:43
Convergence moving mesh lr103476 OpenFOAM Running, Solving & CFD 30 November 19, 2007 15:09
slow after mesh for enhanced wall treat DPM joshkemp FLUENT 0 May 1, 2007 17:20

All times are GMT -4. The time now is 13:03.