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Defining and simulating heat transfer from external PCB design
Posted 8 giu 2020, 07:41 GMT-4 Heat Transfer, CAD Import & LiveLink™ Products for CAD Version 5.5 1 Reply
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Hello,
First of all I am very new to COMSOL in learning phase (aligned to the learning phase of thermal propagation)
I am trying to see if I can simulate an active antenna I've designed using CST. I was able to import the design using a .stp file. The idea was to simulate something like this. However, in this webinar everything is already defined and so I have no clue on how to define my materials (copper, RO4003B and so on). Even more, for my chip I'd have a dissipated power and a thermal resistance. To my knowledge this is not suited for COMSOL as it uses a more complex model, so I thought in triend a Heat rate simulation using the dissipated power as value. But then again it it requires me to define my materials and so on. Can someone indicate me a way to properly describe each material of each element I've?
Here you can see an image of the import properly working.
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It's a bit complicated. I am not new to Comsol, having used it for approaching 20 years, and yet I am also still in the "learning phase!" I suggest you work through some of the library examples in detail, building the models piece by piece for yourself (following the .pdfs, don't just load them already-made for you) and specifying every little feature and setting, one by one, and studying what they do, as you change the settings. It's slow, it's tiring, and it's an effective way to learn. The best way to make material specifications is not intuitively obvious. There are connections to the physics you choose! This will take work to understand.
-------------------Scientific Applications & Research Associates (SARA) Inc.
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