[syavash]

Dear Friends,

I have written a piece of UDF to compute bulk mean temperature inside a 2-D straight pipe with structured grid. I hope it comes to work.


begin_f_loop(f,t0)
{
F_AREA(x2,f,t0);
F_CENTROID(x,f,t0);
BD = x[0];
thread_loop_c(t,d)
{
if (FLUID_THREAD_P(t))
{
begin_c_loop(c,t) /* loops over cells in a cell thread */
{
C_CENTROID(xc,c,t);
if (ABS(xc[0]-BD) < 0.5*NV_MAG(x2))
{
AREA = C_VOLUME(c,t)/(NV_MAG(x2)*ABS(x2[1]));
S_T = S_T + C_T(c,t)*C_R(c,t)*C_U(c,t)*AREA;
S_V = S_V + C_R(c,t)*C_U(c,t)*AREA;
}
}
end_c_loop(c,t)
}
}
T_AVE = S_T/S_V;
S_T = 0.0;
S_V = 0.0;
C_UDMI(F_C0(f,t0),THREAD_T0(t0),0) = T_AVE;
}
end_f_loop(f,t0)

[tadevilas]

Hello sir.
I'm trying to do simulation for synthetic jet (3D) and I want to find out the bulk mean temperature of air. I attached the image of synthetic jet (3D) please go through it. Can you please me for it, I'm not used any udf for this.

[Hgholami]

Originally Posted by syavash

Dear Friends,

I have written a piece of UDF to compute bulk mean temperature inside a 2-D straight pipe with structured grid. I hope it comes to work.


begin_f_loop(f,t0)
{
F_AREA(x2,f,t0);
F_CENTROID(x,f,t0);
BD = x[0];
thread_loop_c(t,d)
{
if (FLUID_THREAD_P(t))
{
begin_c_loop(c,t) /* loops over cells in a cell thread */
{
C_CENTROID(xc,c,t);
if (ABS(xc[0]-BD) < 0.5*NV_MAG(x2))
{
AREA = C_VOLUME(c,t)/(NV_MAG(x2)*ABS(x2[1]));
S_T = S_T + C_T(c,t)*C_R(c,t)*C_U(c,t)*AREA;
S_V = S_V + C_R(c,t)*C_U(c,t)*AREA;
}
}
end_c_loop(c,t)
}
}
T_AVE = S_T/S_V;
S_T = 0.0;
S_V = 0.0;
C_UDMI(F_C0(f,t0),THREAD_T0(t0),0) = T_AVE;
}
end_f_loop(f,t0)

Dear syavash
which type of macro we should add to upper of code?

#include "udf.h“
DEFINE_***(TBULK,t0)

[AlexanderZ]

code above is wrong

you may find good base to define mean temperature in Ansys FLuent Customization manual
look for DEFINE_ON_DEMAND macro -> example

best regards