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

How to set up symmetry for simple 2D model?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 20, 2012, 10:45
Question How to set up symmetry for simple 2D model?
  #1
New Member
 
Andrius
Join Date: Mar 2012
Posts: 23
Rep Power: 5
Matlab69 is on a distinguished road
Hi guys,

I am trying to model turbulent axisymmetric flow.
My approach is to draw half of the geometry and create a named selection (axis) to specify where I want the symmetry.



My approach is to specify the 2D space to be axis symmetric and use axis boundary condition. However, this has failed. Is this the correct approach?
Matlab69 is offline   Reply With Quote

Old   April 20, 2012, 15:58
Default
  #2
Senior Member
 
Ali
Join Date: Jan 2012
Location: Pakistan
Posts: 100
Rep Power: 7
Hybrid is on a distinguished road
I think you are doing wrong. This case is not axi-symmetric but looks like planer.

I suggest rename axis with symmetry and run the case.

is it circular geometry?

if not, then follow my suggestion.
__________________
Best Regards
Ali


Hybrid is offline   Reply With Quote

Old   April 20, 2012, 16:06
Default
  #3
Senior Member
 
Lucky Tran
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 594
Rep Power: 11
LuckyTran is on a distinguished road
You cannot change the default axis for an axissymmetric setup in Fluent. Your axis can only be the Fluent default. In other words, you cannot choose an axis or choose where you want symmetry. That may be your problem. I believe the default is the x-axis, centered at y=0 and z=0 (check it on Fluent manual to be sure).
LuckyTran is offline   Reply With Quote

Old   April 20, 2012, 20:43
Default
  #4
New Member
 
Andrius
Join Date: Mar 2012
Posts: 23
Rep Power: 5
Matlab69 is on a distinguished road
It worked when I drew it using x-axis as symmetry!

However I have realised that it may be incorrect, I am studying the circulation past the bluff body and each side has an effect on each other...

Matlab69 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
[ICEM] Blocking and Symmetry BrolY ANSYS Meshing & Geometry 32 August 24, 2012 03:13
the initialization of the coupled level set method and vof model in FLUENT 13.0 dutliang FLUENT 3 December 13, 2011 22:28
whether we can set up more tables in one model limingtiger CD-adapco 2 August 17, 2005 20:02
How to set Low-Re k-e model Frank FLUENT 2 June 24, 2004 20:03
Can we model spherical symmetry in Fluent !!! Ashish FLUENT 1 April 29, 2004 10:07


All times are GMT -4. The time now is 12:07.