CFD Online Logo CFD Online URL
Home > Forums > ANSYS Meshing & Geometry

From Autocad to Gambit, what is the mesh strategy?

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

LinkBack Thread Tools Display Modes
Old   September 24, 2013, 11:55
Default From Autocad to Gambit, what is the mesh strategy?
Senior Member
Join Date: Jan 2013
Posts: 121
Rep Power: 6
kkpal is on a distinguished road
Dear all,

I'm new to gambit and now I need your help!

I'm simulating flow around cylinders with various adaption, one of which take the following look(Fig 1).

I did this cylinder in autocad, exported as a .sat file, and then for mesh it was imported to Gambit. I built a bigger domain around the cylinder, and tried meshing it by specifying the interval count of each edge, And then rather than using the FACE MESH, I went to the VOLUME MESH directly. At last it came to this(Fig 2).

Since I'm using OpenFOAM, again I converted this mesh file to OF, and viewed the mesh in ParaView(Fig 3, the two face with mesh intersect at the Z axis of the cylinder).

From Fig 3, it could been seen that mesh very near the cylinder and top/bottom face is well meshed, however, the quality in the middle is not satisfactory. I don't think this kind of mesh will give me good result in my simulation.

The main problem of this thread is, when imported from Autocad, how do we usually mesh the domain between the boundary and the cylinder? Is it possible to create structured mesh like Fig 4 in Gambit?

Thanks in advance!
Attached Images
File Type: jpg Fig 1.JPG (16.8 KB, 8 views)
File Type: jpg Fig 2.jpg (99.6 KB, 7 views)
File Type: jpg Fig 3.jpg (94.0 KB, 6 views)
File Type: jpg Fig 4.JPG (39.7 KB, 7 views)
kkpal 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
snappyHexMesh won't work - zeros everywhere! sc298 OpenFOAM Native Meshers: snappyHexMesh and Others 2 March 27, 2011 21:11
Convergence moving mesh lr103476 OpenFOAM Running, Solving & CFD 30 November 19, 2007 15:09
How to mesh a circle by Gambit? Zhengcai Ye FLUENT 5 March 24, 2006 02:04
Mesh import from gambit Kaushik Balakrishnan (Balakrishnan) OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ... 5 April 21, 2005 13:42
3-D Mesh Check in Gambit..... SHR FLUENT 4 March 25, 2003 04:10

All times are GMT -4. The time now is 15:06.