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Issues about settlement of condition-The temperature change input of an isothermal body

Posted 25 févr. 2022, 11:18 UTC−5 Heat Transfer Version 5.6 2 Replies

Zhongchao Sun
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Hello. My simulation is for a packaged electronic component (3D), the main structure of which is the chip, the pin and the package structure. I would like to simulate** the temperature of the package structure and the pins as a function of the chip temperature**. The chip is assumed to be isothermal. The problem encountered is that the chip is a 3D isothermal body and it is not possible to impose changing temperature conditions through the temperature boundary (face boundary). Here I would like to inquire on setting up the multi-physics field conditions.

looking forward to replys.

2 Replies Last Post 28 févr. 2022, 09:04 UTC−5
Edgar J. Kaiser Certified Consultant
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Posted: 2 years ago 25 févr. 2022, 11:57 UTC−5

Zhongchao,

I would think that this task should be an easy one, but it is not really clear to me what the problem is.

Cheers Edgar

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Zhongchao, I would think that this task should be an easy one, but it is not really clear to me what the problem is. Cheers Edgar
Zhongchao Sun
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Posted: 2 years ago 28 févr. 2022, 09:04 UTC−5

I have fixed this problem.

Thanks for COMSOL Technical Support's help and here attached the solution:

If I understand correctly, you would like to assign the temperature to a whole domain? If this is the case, I believe that such a domain does not need to be included in the simulation, only its boundaries connecting to other domains. Those boundaries can be assigned a temperature thanks to a Temperature boundary condition.

Also thanks for Edgar J. Kaiser's reply.

I have fixed this problem. Thanks for COMSOL Technical Support's help and here attached the solution: If I understand correctly, you would like to assign the temperature to a whole domain? If this is the case, I believe that such a domain does not need to be included in the simulation, only its boundaries connecting to other domains. Those boundaries can be assigned a temperature thanks to a Temperature boundary condition. Also thanks for Edgar J. Kaiser's reply.

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