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July 23, 2019, 08:32 |
Heat transfer coefficient
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#1 |
Member
Join Date: Nov 2018
Posts: 41
Rep Power: 8 |
I’m working in a heat sink model. I’m trying to validate my results with an experiment results. I applied a heat source at the bottom of the heat sink and then i used the surface average to get the heat transfer coefficient at the surface of the heat sink. I got almost 350% which is not acceptable I don’t know why. My first question is do we consider the bottom of the heat sink ( where the heat source applied) when getting the heat transfer coefficient? Because I didn’t consider it I just considered the other sides.
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July 25, 2019, 00:07 |
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#2 |
Senior Member
Join Date: Nov 2010
Location: USA
Posts: 1,232
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Write down the equation for heat transfer coefficient and try to compute it using the face getting heat input on the heatsink. Is there anything missing that prevents you from calculating it?
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July 25, 2019, 07:12 |
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#3 |
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Join Date: Nov 2018
Posts: 41
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@me3840 I got the boundary heat flux of the heat sink (whole geometry) over the temperature difference is this way right to get the heat transfer coefficient?.
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July 28, 2019, 17:50 |
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#4 |
Senior Member
Join Date: Nov 2010
Location: USA
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Yes, that would be correct.
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