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Natural convection coefficient

Posted Nov 2, 2015, 4:03 a.m. EST Heat Transfer & Phase Change Version 4.3 4 Replies

Michalis L.
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Dear All,

I am a new user of Comsol and I am currently running a simulation using convective cooling-external natural convection.
Does anyone know what value of heat transfer coefficient h [W/m^2/Κ] Comsol is using for this application?

Thank you in advance,
Michalis L.
4 Replies Last Post Nov 2, 2015, 6:21 a.m. EST
Lasse Murtomäki
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Posted: 9 years ago Nov 2, 2015, 5:04 a.m. EST
It depends on the materials. If you google "heat transfer coefficient" you will find a wide selection of values.

BR
Lasse
It depends on the materials. If you google "heat transfer coefficient" you will find a wide selection of values. BR Lasse
Michalis L.
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Posted: 9 years ago Nov 2, 2015, 5:09 a.m. EST
Mr.Murtomäki many thanks for your responce,

I forgot to mention that I am looking for the h that Comsol uses for Air in external natural convection.

Thanks,
Michalis
Mr.Murtomäki many thanks for your responce, I forgot to mention that I am looking for the h that Comsol uses for Air in external natural convection. Thanks, Michalis
Hinrich Arnoldt COMSOL Employee

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Posted: 9 years ago Nov 2, 2015, 5:53 a.m. EST
Dear Michalis,

the formula for the heat transfer coefficient is documented in the Heat Transfer Module User's Guide pages 67-75.

Kind regards
Hinrich Arnoldt
Dear Michalis, the formula for the heat transfer coefficient is documented in the Heat Transfer Module User's Guide pages 67-75. Kind regards Hinrich Arnoldt
Michalis L.
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Posted: 9 years ago Nov 2, 2015, 6:21 a.m. EST
Dear Hinrich,

Thank you very much for your reply
Dear Hinrich, Thank you very much for your reply

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