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

[ANSYS Meshing] problem in using multizone

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 30, 2013, 06:34
Post problem in using multizone
  #1
Member
 
ali
Join Date: Jun 2013
Posts: 44
Rep Power: 4
ali92 is on a distinguished road
Thanks for advice ghorrocks.
I have already used tetra mesh, but RMS values are not smaller than 1e-4.
Therefore I want to use hexa mesh. I can see with large hexa mesh my RMS are smaller than 1e-4 and my problem is converged.

If I do not use multizone and use hexa simply with small mesh size,there are meshes with too large size in the center part of my circular conduit.

I can use tetra mesh with body sizing .4m accompanied with multizone, but I can not use smaller size mesh. Error is indicated in following picture:
What should I do?
Please give me some advice!
Best regards.
Attached Images
File Type: jpg mesh.jpg (58.8 KB, 32 views)
File Type: jpg mesh1.jpg (53.2 KB, 23 views)
File Type: jpg mesh2.jpg (51.1 KB, 21 views)
File Type: jpg multizone1.jpg (54.3 KB, 20 views)
File Type: jpg multizone.jpg (79.9 KB, 23 views)
ali92 is offline   Reply With Quote

Old   July 30, 2013, 06:48
Post
  #2
Member
 
ali
Join Date: Jun 2013
Posts: 44
Rep Power: 4
ali92 is on a distinguished road
If I do not use multizone and use small mesh size , result is indicated in the picture:
Attached Images
File Type: jpg Untitled.jpg (89.0 KB, 25 views)
ali92 is offline   Reply With Quote

Old   July 31, 2013, 07:33
Default
  #3
Member
 
ali
Join Date: Jun 2013
Posts: 44
Rep Power: 4
ali92 is on a distinguished road
I can use smaller mesh (.2m) with multizone(Free Surface Type: not allowed) but results are not good.(Water pressure and air velocity are too large )I want to use Inflation but I cannot use inflation. I faced with error.

Which surfaces should be select im my work for inflation?
In multizone:
Which option should be use? Hexa or Hexa/prism.

and which option should be use for Free Mesh Type? not allowed or tetra or Hexa dominant or hexa core.

Which surface should be use for source surface in my work?
ali92 is offline   Reply With Quote

Old   July 31, 2013, 07:46
Post
  #4
Member
 
ali
Join Date: Jun 2013
Posts: 44
Rep Power: 4
ali92 is on a distinguished road
pictures are as shown:


Can every one help me?
Attached Images
File Type: jpg Untitled.jpg (57.4 KB, 12 views)
File Type: jpg Untitled2.jpg (67.7 KB, 16 views)

Last edited by ali92; August 2, 2013 at 14:05.
ali92 is offline   Reply With Quote

Reply

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
UDF compiling problem Wouter Fluent UDF and Scheme Programming 6 June 6, 2012 04:43
Gambit - meshing over airfoil wrapping (?) problem JFDC FLUENT 1 July 11, 2011 05:59
natural convection problem for a CHT problem Se-Hee CFX 2 June 10, 2007 06:29
Adiabatic and Rotating wall (Convection problem) ParodDav CFX 5 April 29, 2007 19:13
Is this problem well posed? Thomas P. Abraham Main CFD Forum 5 September 8, 1999 14:52


All times are GMT -4. The time now is 09:43.