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

[ICEM] Meshing a 'high angle ratio' triangular surface

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 13, 2017, 09:35
Smile Meshing a 'high angle ratio' triangular surface
  #1
New Member
 
Simon
Join Date: Dec 2016
Posts: 14
Rep Power: 9
jchan033 is on a distinguished road
Hi everyone,

As the subject indicates I wish to mesh a triangular surface (currently working on 2D), but because my triangle has a high 'angle ratio', meshing it creates very skewed cells.

I am aware of Y blocking, however it still gives very skewed cells.

Anyone can advise on this? (maybe I don't even need Y blocking?)

Thanks for reading!

Cheers,
Simon
Attached Images
File Type: jpg Meshing, skewed cell.jpg (59.9 KB, 15 views)
File Type: jpg Blocking.jpg (18.9 KB, 14 views)
jchan033 is offline   Reply With Quote

Old   January 13, 2017, 13:49
Default
  #2
Senior Member
 
Join Date: Feb 2011
Posts: 496
Rep Power: 18
Antanas is on a distinguished road
Try to move vertices
Attached Images
File Type: jpg Meshing, skewed cell.jpg (79.6 KB, 16 views)
Antanas is offline   Reply With Quote

Old   January 14, 2017, 09:04
Default
  #3
New Member
 
Simon
Join Date: Dec 2016
Posts: 14
Rep Power: 9
jchan033 is on a distinguished road
Quote:
Originally Posted by Antanas View Post
Try to move vertices
Hi Antanas,

Thanks for responding!

The attached is the result of your recommendation; any more advice you think would help? It still is skewed quite a lot.

Cheers,
Simon
Attached Images
File Type: jpg Edit.jpg (76.5 KB, 12 views)
jchan033 is offline   Reply With Quote

Old   January 14, 2017, 11:33
Default
  #4
Senior Member
 
Join Date: Feb 2011
Posts: 496
Rep Power: 18
Antanas is on a distinguished road
Hmm... Try to move this split closer to corner and add additional splits to the right of it.
Attached Images
File Type: jpg Meshing, skewed cell.jpg (66.6 KB, 13 views)
Antanas is offline   Reply With Quote

Old   January 15, 2017, 22:34
Default
  #5
New Member
 
Simon
Join Date: Dec 2016
Posts: 14
Rep Power: 9
jchan033 is on a distinguished road
Quote:
Originally Posted by Antanas View Post
Hmm... Try to move this split closer to corner and add additional splits to the right of it.
But in the end I still need to settle with a rectangular block of..."high parallel length ratio", which will lead to a very small minimal angle (fluent takes 18 degrees or more yes?)

Is there any other recommendation that you can think of?

You may refer to the attached pic, I'm trying to mesh the "Stenosis" part

Thanks!
Attached Images
File Type: jpg Problem Statement.jpg (98.6 KB, 8 views)
jchan033 is offline   Reply With Quote

Old   January 16, 2017, 00:40
Default
  #6
New Member
 
Simon
Join Date: Dec 2016
Posts: 14
Rep Power: 9
jchan033 is on a distinguished road
Quote:
Originally Posted by jchan033 View Post
But in the end I still need to settle with a rectangular block of..."high parallel length ratio", which will lead to a very small minimal angle (fluent takes 18 degrees or more yes?)

Is there any other recommendation that you can think of?

You may refer to the attached pic, I'm trying to mesh the "Stenosis" part

Thanks!
I've tried editing the geometry...but I think its the nature of the geometry that causes this difficult meshing.

It's a curve, so like a circle, it will slowly go to an angle less than 18 at some point...any advice?
Attached Images
File Type: jpg Edited.jpg (63.9 KB, 13 views)
jchan033 is offline   Reply With Quote

Old   January 16, 2017, 06:53
Default
  #7
Senior Member
 
Join Date: Feb 2011
Posts: 496
Rep Power: 18
Antanas is on a distinguished road
So you've got almost zero angle, it's very bad. Try to avoid this.
Antanas 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
[ICEM] Problems with coedge curves and surfaces tommymoose ANSYS Meshing & Geometry 6 December 1, 2020 11:12
[snappyHexMesh] Problem with Sanpper, surface still Rough Zephiro88 OpenFOAM Meshing & Mesh Conversion 7 November 5, 2014 12:05
[Other] 3d high lift meshing linyx ANSYS Meshing & Geometry 1 April 7, 2013 03:36
Grid deformation for high aspect ratio grids praveen SU2 Shape Design 5 February 15, 2013 19:50
[Netgen] Import netgen mesh to OpenFOAM hsieh OpenFOAM Meshing & Mesh Conversion 32 September 13, 2011 05:50


All times are GMT -4. The time now is 18:02.