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

UDF temperature variation

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 31, 2008, 10:48
Default UDF temperature variation
  #1
Alex E-H
Guest
 
Posts: n/a
Hi. I am new to using UDFs and have read through the help file. I am attempting to create an inlet velocity whose temperature varies sinusoidally every 24 hours. My udf file is given below:

#include "udf.h"

DEFINE_PROFILE(test,thread,position)

{ real x[ND_ND]; /* this will hold the position vector */

real y;

face_t f;

begin_f_loop(f,thread)

{

F_CENTROID(x,f,thread);

y=x[0];

F_PROFILE(f, thread, position) = 10.*sin(t*(pi/720.)) */ here stands the profile function as a function of time /*

}

end_f_loop(f,thread)

}

I am receiving an error message when interpreting in fluent:

"cpp -IT:\XP\Fluent.Inc\fluent6.2.16/src -IT:\XP\Fluent.Inc\fluent6.2.16/cortex/src -IT:\XP\Fluent.Inc\fluent6.2.16/client/src -IT:\XP\Fluent.Inc\fluent6.2.16/multiport/src -I. -DUDFCONFIG_H="<udfconfig.h>" U:\4th yr\FYP\2nd\Unsteady\udftempprofile.c Error: U:\4th yr\FYP\2nd\Unsteady\udftempprofile.c: line 1: parse error."

Any help is much appreciated
  Reply With Quote

Old   November 7, 2008, 09:04
Default Re: UDF temperature variation
  #2
e0125583
Guest
 
Posts: n/a
looks like a syntax error. check if the file-format of you c-file is unix (not DOS) or try to compile the udf instead of interpreting it.
  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
UDF temperature variation Alex E-H FLUENT 2 November 5, 2008 10:18
Pressure temperature variation Dev CFX 0 June 21, 2007 23:01
Viscosity variation with temperature for gases- Kedar Main CFD Forum 3 October 24, 2005 06:43
variation of surface tension with temperature Markus FLUENT 1 July 17, 2002 20:23
Property variation with temperature G.Balakrishnan FLUENT 1 December 16, 2000 07:51


All times are GMT -4. The time now is 12:50.