whats wrong with this udf ?

h.mortezaee · September 14, 2015, 06:48

hi there
im new to udf , im trying to learn how to use define source ? when i Intereprete this udf fluent exits with an error, i was wondering what is causing this?

#include "udf.h"
#include "math.h"
DEFINE_SOURCE(energy_source,c,t,dS,eqn)
{
real x[ND_ND];
real con, source;
C_CENTROID(x,c,t);
con = 50*exp(1/((x[1]*x[1])*(x[2]*x[2])));
source = con;
dS[eqn] = 0;
return source;
}

Bruno Machado · September 14, 2015, 08:02

which error appears? did you try to compile instead of interpret it?

h.mortezaee · September 14, 2015, 08:16

no i didn't compile it, but i think this is because of the math.h header , any comment on that ?
btw fluent shuts down rapidly so i cant catch the error

Bruno Machado · September 14, 2015, 08:32

there is no need to include math.h since it is included already by the udf.h

September 14, 2015, 06:48	whats wrong with this udf ?	#1
h.mortezaee Member hani mortezaee Join Date: Sep 2014 Posts: 30 Rep Power: 12	hi there im new to udf , im trying to learn how to use define source ? when i Intereprete this udf fluent exits with an error, i was wondering what is causing this? #include "udf.h" #include "math.h" DEFINE_SOURCE(energy_source,c,t,dS,eqn) { real x[ND_ND]; real con, source; C_CENTROID(x,c,t); con = 50exp(1/((x[1]x[1])(x[2]x[2]))); source = con; dS[eqn] = 0; return source; }

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
something wrong when compiling udf, however the code is correct when interpreting	richard ben	Fluent UDF and Scheme Programming	7	May 11, 2013 08:36
Help me to check my UDF	Liufeng_ustb	Fluent UDF and Scheme Programming	2	May 7, 2013 11:25
parse error while interpreting udf	Kristin	Fluent UDF and Scheme Programming	3	March 15, 2012 07:43
what's wrong with the UDF	major	FLUENT	6	March 3, 2005 07:39
UDF, UDF, UDF, UDF	Luc SEMINEL	Main CFD Forum	0	November 25, 2002 05:01

September 14, 2015, 08:02		#2
Bruno Machado Senior Member Bruno Machado Join Date: May 2014 Posts: 271 Rep Power: 13	which error appears? did you try to compile instead of interpret it?

September 14, 2015, 08:16		#3
h.mortezaee Member hani mortezaee Join Date: Sep 2014 Posts: 30 Rep Power: 12	no i didn't compile it, but i think this is because of the math.h header , any comment on that ? btw fluent shuts down rapidly so i cant catch the error

September 14, 2015, 08:32		#4
Bruno Machado Senior Member Bruno Machado Join Date: May 2014 Posts: 271 Rep Power: 13	there is no need to include math.h since it is included already by the udf.h