CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

Explain GMSH element sizing methods

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

LinkBack Thread Tools Display Modes
Old   September 2, 2012, 15:39
Default Explain GMSH element sizing methods
New Member
Viggy Palaniappan
Join Date: Jul 2012
Posts: 10
Rep Power: 5
spitfire is on a distinguished road
I have an aerofoil in a circular farfield and want to create meshes of varying element size in GMSH.

I've been using the a) geometry file to change the element size @ certain points and b) the mesh element size factor tool in the GUI and c) the refine by splitting option in the toolbox.

Can someone explain why there are three options/what do they do and how to systematically create a series of meshes? I'd love some help please =)
spitfire is offline   Reply With Quote

Old   March 21, 2013, 13:56
Felipe Portela
Join Date: Dec 2012
Location: London
Posts: 58
Rep Power: 4
fportela is on a distinguished road

a) you simply prescribe the target characteristic size of the elements at that point, Gmsh interpolates between these values to generate the mesh.
b) scales all the target sizes by the size factor
c) split elements to create a finer mesh (though I believe the manual mentions the quality of the mesh will be quite poor when using this)

By series of meshes, you mean different mesh sizes for a same geometry? If so, maybe you can just play around with option b).

fportela 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
[Other] Mesh Importing Problem cuteapathy ANSYS Meshing & Geometry 1 June 7, 2012 13:39
Gmsh and element size factor msarkar Open Source Meshers: Gmsh, Netgen, CGNS, ... 0 May 2, 2011 02:55
Import problem ARC Open Source Meshers: Gmsh, Netgen, CGNS, ... 0 February 27, 2010 11:56
comments on FDM, FEM, FVM, SM, SEM, DSEM, BEM kenn Main CFD Forum 2 July 18, 2004 18:28

All times are GMT -4. The time now is 05:39.