CFD Online Logo CFD Online URL
Home > Forums > FLUENT

modeling thermoelectric cooler

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   November 19, 2008, 11:32
Default modeling thermoelectric cooler
Vivek Sahu
Posts: n/a
Sponsored Links
Hello All,

I am trying to model thermoelectric cooler (TEC) inside a fluidic channel. One side of the thermoelectric is facing fluid and the other side is attached to the heat sink. Heat removed from TEC is given by the following equation

Q= S*I*T_c - 0.5 * I^2*Re - (T_h-T_c)/R_th Where S= Seebeck coefficient, I=current, Re=electrical resistance, T_c=cold side temperature, T_h=hot side temperature, R_th=thermal resistance I have written Define_Heat_flux UDF and hooked it after compilation. But Fluent was not showing this macro in the boundary condition panel? But if I interpret the code, then is shows up in the boundary condition panel but I get the following error during initialization:

Error: FLUENT received fatal signal (ACCESS_VIOLATION) 1. Note exact events leading to error. 2. Save case/data under new name. 3. Exit program and restart to continue. 4. Report error to your distributor. Error Object: ()

I am also attaching the UDF file

#include "udf.h"

/* calculates heat flux at the cold side of the SLC*/

DEFINE_HEAT_FLUX(Cooling, f,t,c0, t0, cid, cir)


real alpha = 1e-4; /*Seebeck coefficient*/

real I = 0.5; /*current*/

real resistivity = 0.001; /*resistivity*/

real conductivity = 6.7; /*conductivity*/

real height = 5e-6; /*Height of Thermoelectric cooler*/

real len = 1e-4; /*length of Thermoelectric cooler*/

real width = 1e-4; /*Width of Thermoelectric cooler*/

real chi = 0.5; /*portion of heat flowing back to cold side*/

real area =len * width; /*area of the SLC(=length * width) */

real Re = resistivity*height/area ; /*resistance of the SLC layer*/

cid[0]= - chi*I*I*Re/area ;

cid[2]=-alpha*I/area ;


Please advise me how can I model this. Thanks


  Reply With Quote
Sponsored Links


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Icepak thermoelectric Nikhil Lakhkar FLUENT 2 January 23, 2015 05:00
When Introducing Radiation -System becomes cooler? Daniel CFX 5 March 2, 2009 12:12
turbulent modeling with wall functon(or modeling) yoo seon oh Main CFD Forum 5 July 4, 2007 14:06
v2f modeling akula FLUENT 2 September 12, 2003 12:04
Fan modeling Anders Jerhamre Main CFD Forum 1 October 11, 2001 05:26

Sponsored Links

All times are GMT -4. The time now is 07:32.