Learning Forum

[ham]

Hello,

I am essentially trying to make a simple model of a hot wire inside a fluid domain, I'm starting with very simple geometry (pic below). I'm only interested in the heating from the wire, so my first thought was to use a UDF to define an energy source in a region in the fluid zone. However, this doesn't seem to work. I am new to UDF's so most likely my code is wrong (attached below).

Is there a better way to go about the problem?

#include "udf.h"

DEFINE_SOURCE(sourceterm,c,t,dS,eqn)
{
real x[ND_ND];
real source;


C_CENTROID(x,c,t);

if(x[0]>=5 && x[0]<=10 && x[1]>=0 && x[1]<=12)
{
source=50000;
}
else
{
source=0;
}
return source;
}

[Karthik Remella]

Hello,nWhat issue do you get when you compile this UDF? Can you share the error message here?nAlso, why don't you use the Fluent Expressions directly here? Here is a link that might help you with the expression. Please go through this chapter in the Users Guide.nThank you.nKarthiknn