Temperature dependent Heat flux (Peltier effect)
 

I'm a student who have to design a cooling system based on Peltier module for my final degree project.
I have tried to develop a UDF which takes the temperature for one face and applies it in the face where the UDF is applied. I am able to retrieve the information of the face where the UDF is applied but not from the other face.
I´ll post my UDF to see if anyone see where is the problem.

#include "udf.h"

DEFINE_PROFILE(peltier, thread, i)

{
real sum = 0.;
real temp_sum = 0.;
real tmin = 0.;
real tempe,media;
face_t f;

Thread *f_thread;
Domain *domain;
domain = Get_Domain(2);
thread_loop_f(f_thread, domain)
{

begin_f_loop(f, f_thread)
{
tempe=F_T(f,f_thread);
sum=sum+1;
temp_sum=temp_sum+tempe;
}
end_f_loop(f, f_thread)


}
media=temp_sum/sum;
printf("media: %d", media);
begin_f_loop(f, thread)
{
F_PROFILE(f, thread,i) = 0.;
}
end_f_loop(f, thread)
}

Any advice are welcome.

Hi there,


Could you find the answer?
I have the same problem in my project.


Regards.

describe your problem in details

I should apply Q=a*I*T to the boundary condition.
T is the wall temperature.
How can I define it in UDF?
I have tried to use Define_Heat_Flux function.


Thanks for your time.

show your code, describe your problems

#include "udf.h"
real Alpha = 0.; // Seebeck coefficient (V/K)
real I=0.; // Electric current

//

DEFINE_ADJUST(Seebeck_adjust, domain)
{

Alpha = 0.000400;
I=5;
}
DEFINE_HEAT_FLUX(heat_flux, f, t, c0, t0, cid, cir)
{
cid[0] = 0.;
cid[1] = 0.0;
cid[2] = Alpha*I;
cid[3] = 0.;
}

what problems do you have?
may be you should use cid[1] = Alpha*I;
I have no experience here

DEFINE_HEAT_FLUX vs DEFINE_PROFILE
 

Hi

Do note that DEFINE_HEAT_FLUX is not meant for applying the heat flux condition, rather to alter the interactions between temperature and heat flux. For the purpose of applying a profile, DEFINE_PROFILE is to be used.

Vinerm

Hi there,


Could you find the answer?
I have the same problem in my project.


Regards.