CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM

Mesh quality when using snappyHexMesh

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 20, 2011, 10:50
Default Mesh quality when using snappyHexMesh
  #1
New Member
 
Johan
Join Date: Jul 2011
Posts: 6
Rep Power: 6
newToOpenFoam is on a distinguished road
Hi,
When I examined the mesh produced in the motorBike tutorial (using paraView) I was surprised to see irregularities of highly distorted cells.
Aren't those expected to reduce the accuracy of the calculations and if that is the case, is it possible to avoid production of such cells?
Attached Images
File Type: jpg Mesh_motorBike1.jpg (99.4 KB, 99 views)
File Type: jpg Mesh_motorBike2.jpg (92.9 KB, 70 views)
File Type: jpg Mesh_motorBike3.jpg (92.4 KB, 66 views)
newToOpenFoam is offline   Reply With Quote

Old   September 28, 2011, 22:25
Default
  #2
New Member
 
Lee Yin Jen
Join Date: May 2011
Location: Malaysia
Posts: 10
Rep Power: 6
YJ Lee is on a distinguished road
Hi,

Wonder if my reply is a little late. I'm a new OpenFOAM user and have been poking around some functionalities, fascinated by snappyHexMesh and is trying to learn. Having the same situation when I used sHM to mesh an aircraft geometry for external aerodynamics - lots of "messy" cells viewed in Paraview. However, some other threads seem to indicate that the 'apparent' poor quality is due to Paraview's inability to handle polyhedral mesh - and the viewer will attempt to interpret every cell as tet or hex. Hence some apparently poor cells may be produced.

Cheers!

Edit: You may want to check out this thread: How to visualize the castellated mesh?

Last edited by YJ Lee; September 28, 2011 at 22:40. Reason: Add a link to related thread
YJ Lee is offline   Reply With Quote

Reply

Tags
mesh evaluting, mesh generation, snappyhexmesh

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
Mesh motion with Translation & Rotation Doginal CFX 2 January 12, 2014 07:21
snappyHexMesh won't work - zeros everywhere! sc298 OpenFOAM Native Meshers: snappyHexMesh and Others 2 March 27, 2011 21:11
snappyHexMesh aborting Tobi OpenFOAM Native Meshers: snappyHexMesh and Others 0 November 10, 2010 04:23
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55
Icemcfd 11: Loss of mesh from surface mesh option? Joe CFX 2 March 26, 2007 18:10


All times are GMT -4. The time now is 13:20.