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

Boundary Condition

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 2, 2006, 07:43
Default Boundary Condition
  #1
Katja
Guest
 
Posts: n/a
Hello, I try it another time. I`m a Student from RWTH Aachen and I need to know a possibility, how one can set different heat transfer coefficients at the opposite sides of a blockage object as boundary condition? I want to compute a simple simulation for the heat transfer through a wall. Thanks Katja

  Reply With Quote

Old   January 3, 2006, 05:37
Default Re: Boundary Condition
  #2
Mike
Guest
 
Posts: n/a
A possibility is to create a WALL-TYPE user-defined object for each opposite surface of the object. The resulting patches will over-ride the EGWF(Earth-generated-wall-function) application on the interface boundary conditions on the two opposite surfaces. These wall-type user-defined objects will have CO=GRND2 VAL=0.0 for the wall-aligned velocities, CO=GRND2 VAL=GRND2 for ke and ep, and CO=Heat transfer coefficient VAL=SAME for TEM1. In the first instance it would be advisable to test this out on a very simple case so as to allow checking of the results.

In PHOENICS V3.6.1 I believe that you can specify a heat transfer coefficient for the blockage object as an alternative to the heat transfer coefficient computed automatically by the wall functions. If you do this, then of course, only one WALL-TYPE patch need be applied, as described above, so as to specify the other heat transfer coefficient.
  Reply With Quote

Old   January 9, 2006, 12:02
Default Re: Boundary Condition
  #3
Katja
Guest
 
Posts: n/a
Thank you Mike, I will try it out
  Reply With Quote

Old   March 11, 2006, 07:39
Default periodic boundary condition?
  #4
Sima Baheri
Guest
 
Posts: n/a
How can we apply periodic boundary condition in Phoenics, when the grid has been created in ICE-CFD?
  Reply With Quote

Old   April 19, 2006, 01:05
Default Boundary Condition( Hypersonic Reactive flow)
  #5
Pabitra Halder
Guest
 
Posts: n/a
Hello,

I need to know about the far field as well as solid boundary condition for hypersonic reactive flow.

Thanking you,

Pabitra
  Reply With Quote

Old   December 12, 2006, 16:15
Default how to apply periodic boundary conditions in ansys
  #6
narender
Guest
 
Posts: n/a
can any one tell me how to apply periodic boundary conditions in ansys
  Reply With Quote

Reply


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
Boundary condition for UDS Tomik FLUENT 0 December 5, 2006 17:37
Boundary condition of the third kind or Danckwertz boundary condition plage OpenFOAM Running, Solving & CFD 4 October 3, 2006 12:21
Slip Boundary Condition for Moving Boundary Shukla Main CFD Forum 3 November 11, 2005 15:02
UDF boundary condition Jeff FLUENT 2 November 20, 2003 17:15
Boundary Condition in LES Zhang Tsiang Main CFD Forum 3 February 5, 2002 20:15


All times are GMT -4. The time now is 18:17.