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

[ANSYS Meshing] Need help with meshing

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 14, 2013, 11:32
Default Need help with meshing
  #1
Member
 
Join Date: Sep 2012
Posts: 40
Rep Power: 13
S1m0n1 is on a distinguished road
Hi, I've been working on a project involving a 3D model of a room with two inlets and two outlets. In the end I want to track particle movements and concentrations of different gases. I meshed each imprinted inlet and outlet and then I meshed the body as a whole.

My question is, how can I create a finer mesh where the velocity is high and a coarse mesh where the velocity is low?

I want to have my solution converge and right now it does not. I'm also using the student version which reaches a maximum of 512000 cells, so I want finer mesh only where it is necessary.

In the picture you can see where the velocity is high and where it is low.


not sure if the picture worked so here is the link. http://imgur.com/vAHniNA
Thanks.
S1m0n1 is offline   Reply With Quote

Old   March 17, 2013, 14:28
Default
  #2
Member
 
Join Date: Sep 2012
Posts: 40
Rep Power: 13
S1m0n1 is on a distinguished road
Is there anyone that can help me? I would like to mesh the bottom halfof the room with a fine mesh and the upper half with a coarse mesh. Does anyone know how to do this?
S1m0n1 is offline   Reply With Quote

Old   March 17, 2013, 14:39
Default
  #3
Far
Super Moderator
 
Sijal
Join Date: Mar 2009
Location: Islamabad
Posts: 4,553
Blog Entries: 6
Rep Power: 54
Far has a spectacular aura aboutFar has a spectacular aura about
Send a message via Skype™ to Far
set different sizing and you are done.
Far is offline   Reply With Quote

Old   March 17, 2013, 14:45
Default
  #4
Member
 
Join Date: Sep 2012
Posts: 40
Rep Power: 13
S1m0n1 is on a distinguished road
can you be more specific?
S1m0n1 is offline   Reply With Quote

Old   March 17, 2013, 15:12
Default
  #5
Member
 
Join Date: Sep 2012
Posts: 40
Rep Power: 13
S1m0n1 is on a distinguished road
I would like to have a min element size of about 0.05 and a max of about 0.1.
S1m0n1 is offline   Reply With Quote

Old   March 17, 2013, 17:26
Default
  #6
Member
 
Join Date: Sep 2012
Location: FL
Posts: 79
Rep Power: 13
victoryv is on a distinguished road
Quote:
Originally Posted by S1m0n1 View Post
Is there anyone that can help me? I would like to mesh the bottom halfof the room with a fine mesh and the upper half with a coarse mesh. Does anyone know how to do this?
Say if you want to refine only bottom half of the room, draw a cube of its dimensions in the design modeler. In ansys meshing,use sizing function -> body of influence- > select the cube -> give the element size for refinement.
victoryv is offline   Reply With Quote

Old   March 17, 2013, 17:41
Default
  #7
Member
 
Join Date: Sep 2012
Posts: 40
Rep Power: 13
S1m0n1 is on a distinguished road
Ok, thanks for your response.
S1m0n1 is offline   Reply With Quote

Reply


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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Best Meshing scheme for Cylinder Nutrex Main CFD Forum 4 July 29, 2008 11:03
Meshing locks workbench window. andy2o CFX 0 February 1, 2008 05:01
Singularity of grid?Volume meshing vs face meshing Ken Main CFD Forum 0 September 4, 2003 11:09
Volume Meshing & Face Meshing? singularity of grid ken FLUENT 0 September 4, 2003 11:08


All times are GMT -4. The time now is 14:55.