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

UDF for C_VOF variation with time and space

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 16, 2005, 05:36
Default UDF for C_VOF variation with time and space
  #1
Frederik
Guest
 
Posts: n/a
Hi Dear all, I am using vof model with 2 phases .. my problem is writing a UDF which specify the varaition of the volume fraction of the prymary and/or secondary phase with time and space (say as a sinusoidal or gaussian varation law for example).. like a sinusoidal or a gaussian varaition of the Free interface between the 2 phase ...

when I try to use the C-VOF with this law , and introduce time ans spacial coordinates..I have error message..(Access violation..) can some body has deal with similar problem help me ...please!..any suggession ... thanks in advance

Frederik
  Reply With Quote

Old   December 16, 2005, 20:41
Default Re: UDF for C_VOF variation with time and space
  #2
Rucy
Guest
 
Posts: n/a
Dear Frederik,

I used the VOF method to simulate gas-liquid and liquid-liquid two-phase flow using my own fortran code since 1997.

Currently, I am also using the Fluent 6.2. You might forward me your UDF founction. I would like to find the bug for you.

Good luck!

Rucy
  Reply With Quote

Old   December 17, 2005, 20:48
Default Re: UDF for C_VOF variation with time and space
  #3
Rucy
Guest
 
Posts: n/a
Dear Sir,

You could use the VOF model and also use the translation reference frame. I simulated similar case in 1999 to 2000.

Good luck!

Rucy
  Reply With Quote

Old   December 18, 2005, 04:40
Default Re: UDF for C_VOF variation with time and space
  #4
Frederik
Guest
 
Posts: n/a
Dear Rucy..please could you send to me the case you have simulated ..please ..and how to use translation reference frame ... thanks, Frederik

  Reply With Quote

Old   December 19, 2005, 01:53
Default Re: UDF for C_VOF variation with time and space
  #5
Rucy
Guest
 
Posts: n/a
Dear Sir,

I finished the project at U of Toronto many years ago.

Sorry, The case file could not be found any more.

Good luck!

Rucy
  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
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 01:34
Space and time discretization of Euler equation Hooman Main CFD Forum 2 June 6, 2010 08:30
udf with spacial and time variables hongxiao FLUENT 6 March 17, 2005 23:46


All times are GMT -4. The time now is 17:01.