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calculate Nusselt number

Posted 3 nov. 2011, 06:49 UTC−4 Heat Transfer & Phase Change 3 Replies

Saâd Zouitene
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Hi all,

i study a cooling of electronique component by natural convection, i want to plot the Nusselt number and local Nusselt number profiles using my simulation results (the components are fixed on a vertical plate).

wich formula must i use, and how can i use comsol to plot this profiles.

someone have a idea ?

sorry for my bad english !

txs
3 Replies Last Post 2 sept. 2014, 11:36 UTC−4
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago 3 nov. 2011, 10:56 UTC−4
Check out COMSOL gallery example 1448. It shows how to calculate the effective heat transfer coefficient when you simulate natural convection. From that you can directly calculate the local Nusselt number.

Nagi Elabbasi
Veryst Engineering
Check out COMSOL gallery example 1448. It shows how to calculate the effective heat transfer coefficient when you simulate natural convection. From that you can directly calculate the local Nusselt number. Nagi Elabbasi Veryst Engineering
Saad Alshehri
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Posted: 1 decade ago 1 sept. 2014, 16:37 UTC−4

Check out COMSOL gallery example 1448. It shows how to calculate the effective heat transfer coefficient when you simulate natural convection. From that you can directly calculate the local Nusselt number.

Nagi Elabbasi
Veryst Engineering


Dear Nagi,
I do appreciate you participation but could you please help how to calculate heat transfer coefficint since I don't have the required licence to open the model.

Best regards
Saad

[QUOTE] Check out COMSOL gallery example 1448. It shows how to calculate the effective heat transfer coefficient when you simulate natural convection. From that you can directly calculate the local Nusselt number. Nagi Elabbasi Veryst Engineering [/QUOTE] Dear Nagi, I do appreciate you participation but could you please help how to calculate heat transfer coefficint since I don't have the required licence to open the model. Best regards Saad
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago 2 sept. 2014, 11:36 UTC−4
Dear Saad,

You should still be able to open the pdf document that comes with the example and it outlines the steps in some details.

Nagi Elabbasi
Veryst Engineering
Dear Saad, You should still be able to open the pdf document that comes with the example and it outlines the steps in some details. Nagi Elabbasi Veryst Engineering

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