[BobTheCFDGuy]

Hi,

I have a square 2D mesh in Fluent that goes from x and y = 1 to 2.

I have user defined boundaries for temperature that work just fine as
e^2x: exp(2*x[0]);
e^2y: exp(2*x[1]);
e^x: exp(x[0]);
e^y: exp(x[1]);


And am trying to apply an energy source term as:

DEFINE_SOURCE(energy_source,c,t,dS,eqn)
{
real x[ND_ND];
real con, source;
C_CENTROID(x,c,t);
source = -(x[0]*x[0]+x[1]*x[1])*exp(x[0]*x[1]);
dS[eqn] = 0.0;
return source;
}


I am applying the source term by going into "Cell Zone Conditions", double clicking on the solid, checking "source terms", going to the source terms tab, hitting "edit" by energy source terms, turning number of source terms to 1, then selecting "udf_energy_source".

And yet the solution does not change at all whether the source term is enabled or not. I've attached 2 images, 1 of what it looks like and 1 of what it should look like (the top one is correct).

should look like.PNG

looks like.jpg

Does anyone know why it won't do anything?

Thanks