CFD Online Logo CFD Online URL
Home > Forums > FLUENT

3D Pipe Model for Fluent4.5

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

LinkBack Thread Tools Display Modes
Old   July 2, 2000, 20:59
Default 3D Pipe Model for Fluent4.5
Elvin Heng
Posts: n/a
Can anyone help?

I am trying to generate a 3-d structured mesh using Gambit. The objective is to model multiphase flow in a 3-d pipe in Fluent4.5. I've tried: (1) Generating a mapped volume mesh in Gambit (not suitable for Fluent4.5) (2) Decomposing the geometry into two half cylinders and joining the meshed volumes (3) Extruding a face mesh to create a volume. None of these have worked because rotationally cyclic 3D geometries need (a) Z-axis as the centreline (b) a finite Inner Radius (which eliminates the possible use of a symmetry boundary for a half cylinder)

Can anyone help recommend a way of generating a 3-d cylindrical structured mesh for a simple pipe geometry to be used in Fluent4.5? Thanks.

  Reply With Quote

Old   July 3, 2000, 10:09
Default Re: 3D Pipe Model for Fluent4.5
John C. Chien
Posts: n/a
(1). I am not using the code. But I think you can first generate a 2-D structured mesh and rotate it along the axis to generate a 3-D structured mesh. (2). Similar to the cylindrical coordinates system. First, in the z-r plane, you create a long rectangular domain and generate a structured mesh. Then, define the axis, and rotate the domain and the mesh to create the 3-D structured mesh for the pipe.
  Reply With Quote

Old   July 3, 2000, 12:12
Default Re: 3D Pipe Model for Fluent4.5
David Minns
Posts: n/a

I assume from your email address that you are from a university ? If so then for a discounted rate (800GBP) you could purchase a new mesh generation tool. If you have a regular requirement for fully structured meshes then investing in ICEM CFD ( could save you a lot of time in the long term. You could then also use your mesh with any of the 100 supported solver formats.

I hope this helps and good luck


  Reply With Quote

Old   July 3, 2000, 14:25
Default Re: 3D Pipe Model for Fluent4.5
Shyam Kishor
Posts: n/a
The best structured mesh for such a domain would be an O -type mesh. You can create such a mesh in Gambit with few steps : 1) Divide the cylindericl volume in four volumes using a brick, 2) ensure that two of the volumes are "disconnected" at one interface 3) mesh each volume with wedge/hex elements.

Please see the "FAQ" available through online help of Gambit, for more details along with a sample journal file.
  Reply With Quote

Old   July 3, 2000, 19:49
Default Re: 3D Pipe Model for Fluent4.5
Jin-Wook LEE
Posts: n/a
Dear Elvin

I think that you can acheive your purpose by using following commands, by 'text user interface' of Fluent 4.x.

S1(setup 1) --> MG(Manipulate Grid) -> 3D-from-2D

S1 --> MG --> SWAP IJK (if necessary)

S1 --> MG --> SWAP XYZ (if necessary)

Sincerely, Jinwook
  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
How to Model Heat Pipe Heat Pipe FLUENT 11 December 15, 2015 05:37
Mixture model - pipe flow Aly FLUENT 10 June 21, 2010 13:50
pipe in pipe heat exchanger JohannV FLUENT 3 December 3, 2009 03:53
3d mesh for a pipe tsjb00 OpenFOAM Native Meshers: blockMesh 2 January 30, 2009 05:40
Non newtonian power law model in pipe annulus Poly FLUENT 0 March 24, 2005 16:12

All times are GMT -4. The time now is 16:09.