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hi;

i'm a beginner with udf at fluent.
i try to modify the tutorial on velocity profil at inlet that cames with fluent documentation.

this is the code (i just changed the equation)

/************************************************** *********************
vprofile.c
UDF for specifying steady-state velocity profile boundary condition
************************************************** **********************/
#include "udf.h"

DEFINE_PROFILE(inlet_x_velocity, 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[1];
F_PROFILE(f, thread, position) = 2. - (y-84)*(y-84)/(84*84)*2.;
}
end_f_loop(f, thread)
}

when i compile and execute, the solution diverges. and when i try to initialize from the inlet i have X Velocity=8674757m/s

i even tried to put F_PROFILE(f, thread, position) = 2. but i have always the same error.


the geometry is a 3D square with dimentions :
H=84m --> Y axis
L=100m --> X axis
W=2 m --> Z axis

tank you

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sorry
i found that fluent was pointing to the wrong .c file