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

[ANSYS Meshing] Weird Meshing Problems

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 21, 2016, 01:40
Exclamation Weird Meshing Problems
  #1
New Member
 
Join Date: Oct 2015
Location: Florida
Posts: 4
Rep Power: 10
Engineer23 is on a distinguished road
Hello everyone, I attached pictures of the mesh issues I'm running into. Not only is the mesh uneven across the length of the pipe, but at the end of the pipe there is a weird orange layer of mesh that seems out of place.





When I load into Fluent it gives this weird bubble of mesh.



Do you know what's wrong and how I can fix it?

Thank you.
Engineer23 is offline   Reply With Quote

Old   November 21, 2016, 02:41
Default
  #2
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
Rep Power: 22
vasava will become famous soon enough
  1. The uneven mesh is because you have 'Proximity' or 'Curvature' or 'Proximity & Curvature' method on.
  2. I see patches of 'green' in the 'weird orange layer of mesh'. This indicates that you have overlapping regions. So actually you are seeing meshes of two regions one colored with green and other colored with orange.
  3. Quote:
    Originally Posted by Engineer23 View Post
    how I can fix it?
    You need to fix your geometry. You may have exta region that you dont need and have forgot to delete.

    The other way: In Ansys meshing you can 'suppress' the extra region so you dont mesh it accidentally/unintentionally.
vasava is offline   Reply With Quote

Old   November 21, 2016, 02:41
Default
  #3
Senior Member
 
Onur Özcan
Join Date: Feb 2016
Location: Istanbul/Turkey
Posts: 461
Rep Power: 12
oozcan is on a distinguished road
check your changes in DM (merges, etc.)
check your external geometry extension (if it is )
check your model tolerance
check your facet geometry
make finer mesh
oozcan is offline   Reply With Quote

Old   November 21, 2016, 03:08
Default
  #4
New Member
 
Join Date: Oct 2015
Location: Florida
Posts: 4
Rep Power: 10
Engineer23 is on a distinguished road
Quote:
Originally Posted by vasava View Post
  1. You need to fix your geometry. You may have exta region that you dont need and have forgot to delete.
This geometry was created using spaceclaim and volume extract. What sort of region might this be then? And how would I delete it?

Thank you.
Engineer23 is offline   Reply With Quote

Old   November 21, 2016, 03:16
Default
  #5
Senior Member
 
Onur Özcan
Join Date: Feb 2016
Location: Istanbul/Turkey
Posts: 461
Rep Power: 12
oozcan is on a distinguished road
delete>body delete in DM
oozcan is offline   Reply With Quote

Old   November 21, 2016, 03:24
Default
  #6
Senior Member
 
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
Rep Power: 22
vasava will become famous soon enough
Quote:
Originally Posted by Engineer23 View Post
This geometry was created using spaceclaim and volume extract. What sort of region might this be then? And how would I delete it?
You may have made error while selecting seed surface (thats where most people make mistake).

I recommend that you use preview slider to see where it is going wrong. It plays like an animation and when it goes wrong the faces should turn red.

Unless we see the complete model it is bit tricky to give you suggestions.
vasava is offline   Reply With Quote

Old   November 21, 2016, 05:30
Default
  #7
New Member
 
Join Date: Oct 2015
Location: Florida
Posts: 4
Rep Power: 10
Engineer23 is on a distinguished road
Ok, I went back into spaceclaim and now everything is working fine. Thank you guys so much!
Engineer23 is offline   Reply With Quote

Reply

Tags
ansys, fluent, mesh, weird


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
[ANSYS Meshing] I have Meshing Problems Ansys 16 Leocali ANSYS Meshing & Geometry 1 April 21, 2016 18:36
[ICEM] Problems with meshing of wind turbine Dosis ANSYS Meshing & Geometry 14 November 13, 2012 05:41
[ICEM] Flow channel meshing problems StefanG ANSYS Meshing & Geometry 19 May 15, 2012 06:44
Gambit problems around meshing models mashinsazi Main CFD Forum 0 April 11, 2011 06:11
Meshing problems using Gambit Vianney FLUENT 4 May 30, 2009 03:45


All times are GMT -4. The time now is 11:00.