CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > ANSYS Meshing & Geometry

[ICEM] Volume mesh gradient

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 21, 2012, 06:58
Question Volume mesh gradient
  #1
New Member
 
SAUMYA
Join Date: Jun 2010
Location: PUNE, INDIA
Posts: 16
Rep Power: 7
ulalala is on a distinguished road
Hi all,

I am meshing a convergent divrgent nozzle in ICEM CFD. But I have been breaking my head over getting a very fine mesh on the throat area and then gradually increasing the cell size towards inlet and outlet side.

I also wanted to create boundary layer close to wall.

Please help.
ulalala is offline   Reply With Quote

Old   August 21, 2012, 07:22
Default
  #2
New Member
 
SAUMYA
Join Date: Jun 2010
Location: PUNE, INDIA
Posts: 16
Rep Power: 7
ulalala is on a distinguished road
I have tried the mesh density option for creating mesh size gradient, but with a expansion ratio of 1.5 the mesh size has been constant throughout.

Saumya.
ulalala is offline   Reply With Quote

Old   August 21, 2012, 08:10
Default
  #3
Super Moderator
 
diamondx's Avatar
 
Ghazlani M. Ali
Join Date: May 2011
Location: Canada
Posts: 1,291
Blog Entries: 23
Rep Power: 20
diamondx will become famous soon enough
a convergent-divergent nozzle is very suitable for a structured mesh. you can then use play with the space between the nodes... is it 2d or 3d ? is it structured ? also diferrent cases were discussed in this forum, please use the search button on top and see the thread that discuss this. if you don't find what you need, come back here. hope it can help...
__________________
Regards,
New to ICEM CFD, try this document --> http://goo.gl/G2gkE
Ali
diamondx is offline   Reply With Quote

Old   August 22, 2012, 11:14
Default
  #4
New Member
 
SAUMYA
Join Date: Jun 2010
Location: PUNE, INDIA
Posts: 16
Rep Power: 7
ulalala is on a distinguished road
Hi Ali,

I am trying to model it in 3D. I did try the structured mesh with the desired gradient, but the quality was very poor.

I also searched in the forum, but could not get anything
Can you plese share a link to the discussion, it would be very helpful.


Thanks

Saumya
ulalala is offline   Reply With Quote

Old   August 22, 2012, 11:15
Default
  #5
Super Moderator
 
diamondx's Avatar
 
Ghazlani M. Ali
Join Date: May 2011
Location: Canada
Posts: 1,291
Blog Entries: 23
Rep Power: 20
diamondx will become famous soon enough
can you share pictures of your mesh, or your project ? i can take a look at it
__________________
Regards,
New to ICEM CFD, try this document --> http://goo.gl/G2gkE
Ali
diamondx is offline   Reply With Quote

Reply

Tags
icem cfd, icem cfd 13.0, volume mesh

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
Moving mesh Niklas Wikstrom (Wikstrom) OpenFOAM Running, Solving & CFD 122 June 15, 2014 06:20
3D Hybrid Mesh Errors DarrenC ANSYS Meshing & Geometry 11 August 5, 2013 06:42
[ICEM] Generating Mesh for STL Car in Windtunnel Simulation tommymoose ANSYS Meshing & Geometry 48 April 15, 2013 04:24
external flow with snappyHexMesh chelvistero OpenFOAM 11 January 15, 2010 20:43
Gambit problems Althea FLUENT 21 February 6, 2001 08:05


All times are GMT -4. The time now is 19:55.