Heat flux BC at some walls is function of T

March 12, 2009, 19:04

Dear friends, I would like to apply a heat flux BC at some walls which is function of Temperature. Could you help me to write UDF for this case, example Heat flux= aT^2 where a is constant and T is temperature. many thanks shannag

March 13, 2009, 05:13

Hi,

If you have a look at the FLUENT UDF User's manual (if you dont have one just google it and it will show up somehwere), there is an example there that sets a velocity profile BC (pg. 3-4 on the 6.1 version), you effectively are going to write the exact same thing, only the line which contains F_PROFILE for you will have your heat flux bc.

use something like C_T(c,tc) to get the cell temperature while you are looping through all the cells.

hope that helps

Agi

March 13, 2009, 13:46

Dear A Kourm, I am new fluent user, I will try it and I will let you know . Many thanks and kind regards Shannag

March 12, 2009, 19:04	Heat flux BC at some walls is function of T	#1
shannag Guest Posts: n/a	Dear friends, I would like to apply a heat flux BC at some walls which is function of Temperature. Could you help me to write UDF for this case, example Heat flux= aT^2 where a is constant and T is temperature. many thanks shannag

March 13, 2009, 05:13	Re: Heat flux BC at some walls is function of T	#2
A Kourm Guest Posts: n/a	Hi, If you have a look at the FLUENT UDF User's manual (if you dont have one just google it and it will show up somehwere), there is an example there that sets a velocity profile BC (pg. 3-4 on the 6.1 version), you effectively are going to write the exact same thing, only the line which contains F_PROFILE for you will have your heat flux bc. use something like C_T(c,tc) to get the cell temperature while you are looping through all the cells. hope that helps Agi

March 13, 2009, 13:46	Re: Heat flux BC at some walls is function of T	#3
shannag Guest Posts: n/a	Dear A Kourm, I am new fluent user, I will try it and I will let you know . Many thanks and kind regards Shannag

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