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

Mesh creation Help

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 4, 2010, 09:23
Default Mesh creation Help
  #1
New Member
 
Joćo Pinto
Join Date: Feb 2010
Posts: 7
Rep Power: 7
joaorp is on a distinguished road
Greetings everyone,

I'm posting because I've been trying to recreate a mesh with these kind of features as shown in the first picture,

Meaning
Polyheadral mesh with prism layers near the top surface on the side surfaces.

But what I can't reproduce is the red areas marked in the picture.

Can anyone explain me how I can get those perfect rectangles in the both top surface and "inlet" surface?

What happens when I try to do using:
Polyheadral mesher
Prism Layers Mesher
Surface Remesher

I get the red marked areas some weird polyheadral meshes or at least triangles, which is not what I want. I need those perfect rectangles on the surface.

If anyone could please explain me how to do this, I'd greatly appreciate it

EDIT:
I should mention that I did the geometry in Pro E, saved it in .stp file, and imported it as surface mesh.
Much appreciate it.
Attached Images
File Type: jpg Copy of original.jpg (43.2 KB, 81 views)
File Type: jpg error.jpg (26.1 KB, 66 views)

Last edited by joaorp; February 4, 2010 at 13:52. Reason: Adding more information
joaorp is offline   Reply With Quote

Old   February 5, 2010, 04:36
Default meshing
  #2
Member
 
karthickeyan
Join Date: Feb 2010
Location: coimbatore
Posts: 36
Rep Power: 7
karthickeyan is on a distinguished road
Send a message via Skype™ to karthickeyan
i think u should not use the prism layer meshing option
karthickeyan is offline   Reply With Quote

Old   February 5, 2010, 07:55
Default
  #3
New Member
 
Joćo Pinto
Join Date: Feb 2010
Posts: 7
Rep Power: 7
joaorp is on a distinguished road
I've tried not using prism layers, but I won't get the effect I want (meaning the first picture there with the prism layers included).

Is there any program I can use to make once cell thickness meshes? If start ccm doesnt' do it?
joaorp is offline   Reply With Quote

Old   February 11, 2010, 09:43
Default
  #4
Senior Member
 
Join Date: Mar 2009
Posts: 203
Rep Power: 9
Maddin is on a distinguished road
Why you don't want this?
Maddin is offline   Reply With Quote

Old   February 11, 2010, 17:41
Default
  #5
New Member
 
Joćo Pinto
Join Date: Feb 2010
Posts: 7
Rep Power: 7
joaorp is on a distinguished road
I want this, but with prism layers :O because that is really what I require.
joaorp is offline   Reply With Quote

Old   February 12, 2010, 05:18
Default
  #6
Senior Member
 
Join Date: Mar 2009
Posts: 203
Rep Power: 9
Maddin is on a distinguished road
Then use the remesher to get a good surface mesh and prism layer to get this volume mesh
Maddin is offline   Reply With Quote

Old   February 12, 2010, 15:09
Default
  #7
New Member
 
Joćo Pinto
Join Date: Feb 2010
Posts: 7
Rep Power: 7
joaorp is on a distinguished road
Will it produce the first picture mesh? I mean, one cell thickness? Because I've never achieved that even using the remesher.
joaorp is offline   Reply With Quote

Old   February 13, 2010, 06:00
Default
  #8
Senior Member
 
Join Date: Mar 2009
Posts: 203
Rep Power: 9
Maddin is on a distinguished road
The wall layers are prism, this you can change, only when you modify the mesh via custom meshing on the sides (volumetric controls).
Maybe I don't understand what you really want
Maddin is offline   Reply With Quote

Old   February 13, 2010, 06:51
Default
  #9
New Member
 
Joćo Pinto
Join Date: Feb 2010
Posts: 7
Rep Power: 7
joaorp is on a distinguished road
I really appreciate your time and help, what I want to do is make a mesh like the first picture (grey one). What I usually end up with is something like the second one. The red part is my main problem. They're not even alike.
joaorp is offline   Reply With Quote

Old   February 15, 2010, 08:12
Default
  #10
Senior Member
 
Join Date: Mar 2009
Posts: 203
Rep Power: 9
Maddin is on a distinguished road
I think when you try the mesh setting with a simple sample you will understand what happens.
Maddin 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
Periodic mesh creation in ICEM epa Main CFD Forum 1 May 1, 2012 16:24
2d irregular grid Remy Main CFD Forum 1 December 22, 2008 05:49
Help needed for airfoil mesh creation using GAMBIT Alagesanj FLUENT 2 October 20, 2008 11:39
basic of mesh refinement arya CFX 4 June 19, 2007 12:21
General questions on grid-based computing Adrin Gharakhani Main CFD Forum 21 June 5, 2000 13:47


All times are GMT -4. The time now is 09:37.