[feride]

Hello everyone,
I want to ask about udf profile doesnt work in fluent. my model has one heated cylinder that has cylindiric domain of water. I want to apply heat flux at heated wall boundary with udf. heat flux profile is cosine shape. I can interpret but after the solution it doesn't give to cosine shape. my udf c code is here;

include "udf.h"

DEFINE_PROFILE(heatflux_profile,thread,position)
{
real x[ND_ND];
real z;
face_t f;

begin_f_loop(f,thread)
{
F_CENTROID(x,f,thread);
z=x[2];
F_PROFILE(f,thread,position)=2.427e7*(-0.0245*(z)*(z)+0.0738*(z)+0.0127);
}
end_f_loop(f,thread)
}

the shape of heat flux profile at the hw after the simulation seemed like in the photo.
Can you help me? thank you in advence

[AlexanderZ]

UDF is correct
fix your equation

2.427e7*(-0.0245*(z)*(z)+0.0738*(z)+0.0127)

and check units, is it coorect that your model is in cm?

best regards