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

Variable BC in time and space for transient run

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 12, 2006, 09:23
Default Variable BC in time and space for transient run
  #1
Porry
Guest
 
Posts: n/a
Dear all,

I want to set up a boundary conditions using a function with 2 variables using CFX-10 Pre. I know how to set up a function of one variable (space or time for ex.) by importing a text file (create user function), but I cannot find out how to impose a BC function of space AND time. Any help is highly appreciated! Thanks!!

Porry
  Reply With Quote

Old   February 20, 2012, 06:04
Default UDF space AND time
  #2
New Member
 
Kamil Sobczak
Join Date: Jan 2010
Location: Warsaw, Poland
Posts: 6
Rep Power: 16
KamilSobczak is on a distinguished road
The same for me in Fluent
KamilSobczak is offline   Reply With Quote

Old   February 21, 2012, 10:38
Default
  #3
Senior Member
 
Join Date: Apr 2009
Posts: 531
Rep Power: 20
stumpy is on a distinguished road
There's really no good way to do this in CFX. If you only have a few timestep, then you can set up a CEL expression that contains a series of if() statements all summed together, so different files get read at different timesteps. But that's not practical for many timesteps and it's not interpolating data in time, it's just using a different file at different timesteps.
stumpy is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Numerical Weather Modelling : Time and space resolution issues chriswatt Main CFD Forum 0 February 15, 2011 22:32
Richardson Extrapolation to check time and space convergence Hooman Main CFD Forum 0 December 29, 2010 09:19
Time and Space Derivatives. beezee99 FLUENT 0 August 19, 2010 02:34
Space and time discretization of Euler equation Hooman Main CFD Forum 2 June 6, 2010 09:30
UDF for C_VOF variation with time and space Frederik FLUENT 4 December 19, 2005 01:53


All times are GMT -4. The time now is 06:11.