UDF for compute heat transfer coefficient at end

mcan · October 31, 2016, 05:25

hi all !
I have a problem , in my project i have to compute heat transfer coefficient , Nusselt number and heat flux values.
I am working on simple natural convection over flat plates vertical horizontal or inclined on 2D no matter.
My problem is , numerical results that i calculated and Fluent results are diferent.
Because of that i need to write udf in order to have numerical results in fluent
Here is the problem , i can't use some macros like DEFINE_PROFILE to assign a new htc in boundry condition(in convection option) , because i have constant temperature or heat flux values and for now i am studying on only about natural convection , i tried to use DEFINE_HEAT_FLUX macro but i guess my code isn't correct .
Anyone help me about it , or any sugestion ?

mcan · October 31, 2016, 06:27

anyone ? pls

October 31, 2016, 05:25	UDF for compute heat transfer coefficient at end	#1
mcan New Member Join Date: Oct 2016 Posts: 3 Rep Power: 10	hi all ! I have a problem , in my project i have to compute heat transfer coefficient , Nusselt number and heat flux values. I am working on simple natural convection over flat plates vertical horizontal or inclined on 2D no matter. My problem is , numerical results that i calculated and Fluent results are diferent. Because of that i need to write udf in order to have numerical results in fluent Here is the problem , i can't use some macros like DEFINE_PROFILE to assign a new htc in boundry condition(in convection option) , because i have constant temperature or heat flux values and for now i am studying on only about natural convection , i tried to use DEFINE_HEAT_FLUX macro but i guess my code isn't correct . Anyone help me about it , or any sugestion ?

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October 31, 2016, 06:27		#2
mcan New Member Join Date: Oct 2016 Posts: 3 Rep Power: 10	anyone ? pls