CFD Online Logo CFD Online URL
Home > Forums > Open Source Meshers: Gmsh, Netgen, CGNS, ...

Mesh around a sail with zero thickness

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

LinkBack Thread Tools Display Modes
Old   April 25, 2008, 14:55
Default I am trying to simulate the fl
New Member
Ole Lindberg
Join Date: Mar 2009
Posts: 1
Rep Power: 0
ole_lindberg is on a distinguished road
I am trying to simulate the flow around at sail.
I think of a sail as a surface with zero thickness.
In Gmsh I tried to make a 2D mesh inside a rectangular "windtunnel" with the sail placed inside the rectangle, but I haven't succeded in generating a mesh on both sides of the sail. In Gmsh the 2D sail is a Line made by a collection of Points. Is it possible to generate tetrahedron/prism/hexahedron meshes around a sail with zero thickness in Gmsh.
Right now I have given the sail a thickness of 1 mm, then i can remove the "inside" of the sail from the mesh like a hole in the domain. This is quite trivial.
If I would only work in 2D I could use another 2D mesh generator like Triangle or DistMesh, but the thing is that I would like to make a 3D simulation of the sail, therefore I need a good 3D mesh generator. Specifically one that can make make a mesh on both sides of an surface with zero thickness. Any recommendations?
ole_lindberg is offline   Reply With Quote

Old   January 6, 2010, 20:08
Senior Member
Eric Nutsch
Join Date: Sep 2009
Location: Eugene, Oregon USA
Posts: 113
Rep Power: 10
ericnutsch is on a distinguished road
Send a message via Skype™ to ericnutsch
I think you need to split your mesh in half at the sail. Mesh one half as one volume then mesh the other.

Not for certain this will work, but its worth a shot...
ericnutsch is offline   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
Z direction thickness control when using fluentMeshToFoam to extrude 2D mesh wei_wu OpenFOAM Running, Solving & CFD 2 February 1, 2009 05:15
Modelling a sail Sar Langa FLUENT 3 September 15, 2005 10:10
Zero thickness boundary inside a 3D mesh Tessaratto Main CFD Forum 6 September 5, 2004 13:51
DEFORMED MESH FOR WIND-SAIL INTERACTION Javier Main CFD Forum 0 March 10, 2004 14:30
Any sail design /CFD conferences? Steve Collie Main CFD Forum 1 August 6, 1999 13:17

All times are GMT -4. The time now is 19:39.