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Temperature dependent Heat flux (Peltier effect) |
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February 8, 2013, 04:12 |
Temperature dependent Heat flux (Peltier effect)
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#1 |
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Daniel
Join Date: Feb 2013
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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. IŽll 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. |
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January 25, 2020, 03:53 |
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#2 |
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Hi there,
Could you find the answer? I have the same problem in my project. Regards. |
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January 27, 2020, 05:45 |
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#3 |
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Alexander
Join Date: Apr 2013
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describe your problem in details
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January 27, 2020, 05:53 |
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#4 |
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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. |
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January 27, 2020, 06:12 |
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#5 |
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Alexander
Join Date: Apr 2013
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show your code, describe your problems
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January 27, 2020, 08:40 |
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#6 |
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#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.; } |
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January 27, 2020, 23:05 |
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#7 |
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Alexander
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what problems do you have?
may be you should use cid[1] = Alpha*I; I have no experience here
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January 28, 2020, 07:28 |
DEFINE_HEAT_FLUX vs DEFINE_PROFILE
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#8 |
Senior Member
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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 |
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February 4, 2021, 04:13 |
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#9 | |
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ahmet kaya
Join Date: Aug 2020
Location: İzmir
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Quote:
Could you find the answer? I have the same problem in my project. Regards. |
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Tags |
heat flux fluent udf, peltier, temperature dependent |
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