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

how to activate conformal grid adaption?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 15, 2006, 06:37
Default how to activate conformal grid adaption?
  #1
Ralf Schmidt
Guest
 
Posts: n/a
Hi!

I want to use conformal grid adaption. How to activate this option??

It is is only available for 2D or axisymmetric geometries. I have an axisymmetric geometry, but in the Grid Adaption Controls Panel, the Conformal option is NOT available...

Any Idea how to get there?

Ralf
  Reply With Quote

Old   May 15, 2006, 13:21
Default Re: how to activate conformal grid adaption?
  #2
Amr
Guest
 
Posts: n/a
Hi Ralf,

For what I came across in Fluent 6.0, the conformal grid adaption works only for tet/tri grid. This is because the algorithm that connects the "finer produced elements" to the original non-adapted elements is supported. For quad/hex elements, there is a "hanging node" algorithm that produces cuts in the original elements while assigning new "vertices" hanged on the original elements' edges. You may want to refer to the manual for more info. I read also that the hanging node adaption is expensive in terms of memory resources.

Cheers, Amr
  Reply With Quote

Old   May 16, 2006, 01:51
Default Re: how to activate conformal grid adaption?
  #3
Ralf Schmidt
Guest
 
Posts: n/a
Hi,

thanks for your reply! I am using 2D axissymmetrical msh build from tri elements. The close wall region is meshed WITHOUT the bondary layer fuction, it is all modelled with tri elements.

And you are right, I want to avoid hanging notes because first: of the memory, and second: someone said, that with hanging notes, the passing of values between two cells is more difficult, especially for tri elements...

Any further hints?

Ralf
  Reply With Quote

Old   May 16, 2006, 05:18
Default Re: how to activate conformal grid adaption?
  #4
Amr
Guest
 
Posts: n/a
Well, as far as I know (from the Fluent guide), conformal grid adaption is supported in the 2D axisymmetric domains. For its activation, there supposed to be an option in the Adaption > Controls sub-menu. Does this ring a bell to you?

Cheers, Amr
  Reply With Quote

Old   May 16, 2006, 05:30
Default Re: how to activate conformal grid adaption?
  #5
Ralf Schmidt
Guest
 
Posts: n/a
thats what I am wondering!

I can NOT activate this option in the Adaption > Controls sub-menu. It is ther, but I can not manipulate its setting. It is fixed on "hanging notes"....

Thats my problem!!! Maybe there are other constrains for the conformal option, Fluent manual does not tell...

Ralf
  Reply With Quote

Old   May 16, 2006, 17:35
Default Re: how to activate conformal grid adaption?
  #6
Amr
Guest
 
Posts: n/a
As for now, unfortunately, I have no clue for that. Just make sure that the Fluent version you're using supports the conformal adaption. Hope we find answers from other expert people !

Cheers, Amr
  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
Coarsening mesh in Fluent Ibuki FLUENT 5 May 27, 2008 19:36
grid adaption mode NOT selectable via VNC Ralf Schmidt FLUENT 2 May 24, 2006 02:35
Need help with Grid Adaption _stephen_ FLUENT 0 January 13, 2005 08:07
Adaption by Y+ on a mixed grid with periodics Martin Shanel FLUENT 0 June 24, 2002 06:31
Combustion Convergence problems Art Stretton Phoenics 5 April 2, 2002 05:59


All times are GMT -4. The time now is 07:48.