working on heat sink , the problem is how to get h ( convection coeff)

ksj22 · September 3, 2019, 11:24

hi guys so I'm working on a project where I'm comparing several heat sinks to find the best one .

I've watched alot of youtube videos but one thing that I noticed was all the guide videos , they put constant # for convection coeff.

If I recall correctly from heat transfer course, that coeff should be calculated using some sort of equation that is based on experiment?

is there anyway ANSYS can calculate the coeff ?

thanks in advance

brunomargotto · September 4, 2019, 10:04

Hey!

You're trying to estimate the convection heat transfer coefficient? Or just compute multiple simulations?

1) If you want to estimate:
-Try to search for inverse heat problems;
-There are nummerous techniques for it;

2) Otimization:
-Try to use MATLAB x ANSYS Fluent coupling;
-With MATLAB, you should implement the otimization technique you want;
-With ANSYS Fluent, you will generate your resutls for comparison;

Hope this help

September 3, 2019, 11:24	working on heat sink , the problem is how to get h ( convection coeff)	#1
ksj22 New Member sangjeong Join Date: Sep 2019 Posts: 1 Rep Power: 0	hi guys so I'm working on a project where I'm comparing several heat sinks to find the best one . I've watched alot of youtube videos but one thing that I noticed was all the guide videos , they put constant # for convection coeff. If I recall correctly from heat transfer course, that coeff should be calculated using some sort of equation that is based on experiment? is there anyway ANSYS can calculate the coeff ? thanks in advance

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September 4, 2019, 10:04		#2
brunomargotto New Member Bruno Margotto Join Date: Jun 2017 Posts: 5 Rep Power: 8	Hey! You're trying to estimate the convection heat transfer coefficient? Or just compute multiple simulations? 1) If you want to estimate: -Try to search for inverse heat problems; -There are nummerous techniques for it; 2) Otimization: -Try to use MATLAB x ANSYS Fluent coupling; -With MATLAB, you should implement the otimization technique you want; -With ANSYS Fluent, you will generate your resutls for comparison; Hope this help