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mesh dependency of "heat sink with fins"?

Posted 2015年6月10日 GMT-4 12:11 Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD), Mesh Version 5.1 0 Replies

Lotta Koch
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Dear all,

I just run the demonstration application (heat transfer) "heat sink with fins" with the preset mesh without any changes. Then I added a second mesh where I had a one step less coarse mesh.
I compared the cooling power and the result was only 90 % of the solution with the coarser mesh (5.2374 W vs. 5.7559 W.
What did I do wrong? Is the preset mesh not fine enough?

I tried that, because I had problems with solutions beiing dependend of my mesh. I simulated a simple air flow over a heated plate and wanted to know the heat loss of the plate.

Thank you for any hint!
0 Replies Last Post 2015年6月10日 GMT-4 12:11
COMSOL Moderator

Hello Lotta Koch

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