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

Uniform mesh in ICEM - again

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 29, 2011, 14:25
Question [ICEM] Uniform mesh in ICEM - again
  #1
New Member
 
Join Date: Jan 2010
Posts: 15
Rep Power: 16
harerton is on a distinguished road
Hi everybody,

I again need to create an uniform mesh with hexa elements of specific size. Again the geometry was created with this in mind.

Following the steps in the femur tutorial I could setup the pre mesh parameters easily. The picture below shows part of the geometry with the pre-mesh showing. This is exactly what I was expecting to get.



Then after computing the new mesh using BFCart I get the following result (see picture below) where the elements are smaller and consequently not aligned with the pre-mesh (see the edge bunching along the edges).




Any suggestion?

Thanks!

Harerton

Last edited by harerton; June 29, 2011 at 18:26. Reason: edit title
harerton is offline   Reply With Quote

Old   July 4, 2011, 15:20
Default
  #2
New Member
 
Join Date: Jan 2010
Posts: 15
Rep Power: 16
harerton is on a distinguished road
Anyone? thanks!
harerton is offline   Reply With Quote

Old   July 5, 2011, 10:21
Default Final
  #3
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,663
Blog Entries: 1
Rep Power: 47
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
Sure...

As part of the algorithm, BFCart actually ends up working with its inverse mesh (this is how it steps back from the faces so it can insert a boundary layer).


You can use the Method option to get what you want.

When you select the Cartesian file to start from, you need to specify if that Cartesian file is the initial or final location of the splits...

My guess is you picked initial, so the inversion happens afterward. But Pick Final (Set "Enforce a Split" "Method" to "Final") and those will be the final split locations... (actually, behind the scenes, it just inverts it first, then the algorithm inverts it back again, which is not exactly the same if your sizes are changing, but it should be the same for a uniform distribution like you showed.)
__________________
-----------------------------------------
Please help guide development at ANSYS by filling in these surveys

Public ANSYS ICEM CFD Users Survey

This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)...

CFD Online Users Survey
PSYMN is offline   Reply With Quote

Old   July 5, 2011, 14:04
Default
  #4
New Member
 
Join Date: Jan 2010
Posts: 15
Rep Power: 16
harerton is on a distinguished road
Simon,

Thanks for answering again. I think I understood the process. So I need to generate a cartesian file after blocking. But when I go to file > blocking > write cartesian grid I get something that resemble an error dialog, but without any info. Am I missing something? (see picture below)



Thanks!
harerton is offline   Reply With Quote

Old   July 5, 2011, 18:15
Default
  #5
New Member
 
Join Date: Jan 2010
Posts: 15
Rep Power: 16
harerton is on a distinguished road
I tried all the steps using a simple cube geometry and didn't get the above error message. Could this indicate a problem with my original geometry?

Edit: Anyway, tried again with original geometry but using a different filename (without any spaces) and it worked.

Thank you!

Last edited by harerton; July 5, 2011 at 18:37.
harerton is offline   Reply With Quote

Old   July 6, 2011, 16:24
Default
  #6
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,663
Blog Entries: 1
Rep Power: 47
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
I submitted a defect report on your behalf...

Best regards,

Simon
__________________
-----------------------------------------
Please help guide development at ANSYS by filling in these surveys

Public ANSYS ICEM CFD Users Survey

This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)...

CFD Online Users Survey
PSYMN is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
second order schemes marine OpenFOAM 67 April 11, 2022 19:19
Gambit problems Althea FLUENT 22 January 4, 2017 04:19
[ICEM] Unstructure Meshing Around Imported Plot3D Structured Mesh ICEM kawamatt2 ANSYS Meshing & Geometry 17 December 20, 2011 12:45
ICEM Tetra mesh, Size reduction and Skewness problem Catthan ANSYS Meshing & Geometry 6 December 5, 2010 20:39
Boddy fitted Hexcore Mesh in ICEM Cfd Mitch CFX 0 December 29, 2008 07:07


All times are GMT -4. The time now is 20:08.