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

T-junction hexahedral gambit meshing (same radius)

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 9, 2008, 09:56
Default T-junction hexahedral gambit meshing (same radius)
  #1
Florence
Guest
 
Posts: n/a
Hello I have to mesh a T-junction composed of two cylinders with the same radius. I want to get hexahedral elements for my mesh. I don't know how I have to decompose my geometry. I would like to get some ideas. Thank you very much Florence
  Reply With Quote

Old   June 9, 2008, 15:15
Default Re: T-junction hexahedral gambit meshing (same rad
  #2
HSeldon
Guest
 
Posts: n/a
Hi Florence. Go to tutorial nº3 in Gambit documentation the title is something like "3 pipe junction". There you´ll have a good explanation. Good luck!
  Reply With Quote

Old   June 10, 2008, 02:48
Default Re: T-junction hexahedral gambit meshing (same rad
  #3
Florence
Guest
 
Posts: n/a
Hello HSeldon Thank you but I have already done this tutorial and I tried to inspire myself with it, but I met an error of gambit. I want to mesh a logical tetrahedra with the Tet Primitive Scheme but Gambit says me that the connectivity of my volume doesn't allow the Tet Primitive Scheme. I tried to disconnect the faces of my volume, but it didn't work. I searched on books what are the connectivity conditions for Tet Primitive Scheme, no success. I don't know how to deal with this error. Thanks Florence
  Reply With Quote

Old   June 11, 2008, 17:31
Default Re: T-junction hexahedral gambit meshing (same rad
  #4
HSeldon
Guest
 
Posts: n/a
Did you try meshing the central volume of the intersection and then mesh the rest with hex cooper scheme?

Take care.

  Reply With Quote

Old   June 11, 2008, 17:43
Default Re: T-junction hexahedral gambit meshing (same rad
  #5
HSeldon
Guest
 
Posts: n/a
A piece of text taken from Gambit documentation, hope this helps!

The Tet Primitive volume meshing scheme applies only to volumes that constitute logical tetrahedra. To constitute a logical tetrahedron, a volume must include only four sides, each of which constitutes a logical triangle.

Cya
  Reply With Quote

Old   June 12, 2008, 02:49
Default Re: T-junction hexahedral gambit meshing (same rad
  #6
Florence
Guest
 
Posts: n/a
Hello HSeldon

Finally, I found a way to solve my problem. I split my intersection volume with three "cylinders" and then I used cooper scheme in the good order. _______________________________________ | | | | | | | /\ | | _________________ ____________________

| |

| |

__

| |

| |

Here a scheme the decomposition I used. The radius are the same. I hope my scheme won´t be destroy.

Thank you for your help

Florence
  Reply With Quote

Old   January 5, 2010, 06:27
Default
  #7
New Member
 
joe star
Join Date: Oct 2009
Posts: 9
Rep Power: 6
joe_star is on a distinguished road
I know its quite an old post but I'm interested to know how you managed to mesh the pipe t junction using the cooper scheme. Any help would be much appreciated
joe_star 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
Gambit: decomposing T-junction geometry John FLUENT 9 August 1, 2012 15:27
T-junction meshing in Gambit David Friis Aarup FLUENT 0 October 28, 2008 06:29
T junction - meshing wall zone in Gambit John FLUENT 3 August 29, 2005 10:09
t-junction hexahedral gambit meshing solomon FLUENT 1 April 30, 2003 13:32
Tetrahedral vs. Hexahedral Meshing for CFD Andy Bartels Main CFD Forum 14 August 22, 2000 07:35


All times are GMT -4. The time now is 04:18.