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

Asking for mesh help

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 5, 2014, 05:52
Smile Asking for mesh help
  #1
New Member
 
Minfeng
Join Date: Sep 2014
Posts: 1
Rep Power: 0
zhou_buaa is on a distinguished road
Since I am a beginner for Star-CCM+, I encountered one meshing problem. I have a heat exchanger structure here, which has some thin fins inside it. It belongs to the fluid-solid heat convection case, so there is the fluid zone inside the heat exchanger.

I just set one mesh type for all the zones. The base size of the mesh is 8mm, and the prism thickness is 30%, 2 layers. Surface size is 25%-100%. When generating the volume mesh, here shows "can't recover edge near position: (-2.17425e-03, -1.83500e-01, -1.88403e-02)" and some other similar messages. I thought it was the mesh problems, but I did not know how to deal with. I tried to set different mesh types on different regions, but there were problems when examining the surface mesh.

I really hope some experts would help me with this. Thank you very much!
Attached Images
File Type: jpg Question_20140905.jpg (69.7 KB, 36 views)
zhou_buaa is offline   Reply With Quote

Old   April 25, 2017, 09:27
Unhappy
  #2
New Member
 
Sid007
Join Date: Nov 2015
Location: Nantes, France
Posts: 7
Rep Power: 6
sidhant is on a distinguished road
Hello,

I am getting the same error. I see you have thin structures. I am sure the problem is with those features but I cannot understand why it is so. Can somebody please help?
sidhant is offline   Reply With Quote

Old   April 10, 2020, 06:38
Default
  #3
Senior Member
 
MA
Join Date: Mar 2020
Posts: 122
Rep Power: 2
mazhar16823 is on a distinguished road
Quote:
Originally Posted by zhou_buaa View Post
Since I am a beginner for Star-CCM+, I encountered one meshing problem. I have a heat exchanger structure here, which has some thin fins inside it. It belongs to the fluid-solid heat convection case, so there is the fluid zone inside the heat exchanger.

I just set one mesh type for all the zones. The base size of the mesh is 8mm, and the prism thickness is 30%, 2 layers. Surface size is 25%-100%. When generating the volume mesh, here shows "can't recover edge near position: (-2.17425e-03, -1.83500e-01, -1.88403e-02)" and some other similar messages. I thought it was the mesh problems, but I did not know how to deal with. I tried to set different mesh types on different regions, but there were problems when examining the surface mesh.

I really hope some experts would help me with this. Thank you very much!


Could be a late reply but anyways. It happened in my case as well. Once you get this error go to the surface repair and fix any issues with the domain. Also, if you are not dealing with complex geometries then put min. face quality between 0.15 - 2.0 in Surface Remesher properties. If still the error persists, then disable ''CAD Projection'' under default controls. Because sometimes, CAD errors from 3D CAD Modeller propagate to the Parts node and can affect meshing eventually. Now clear all generates meshes and run the mesher again.
mazhar16823 is offline   Reply With Quote

Reply

Tags
mesh 3d

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



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