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modeling thin film heaters at the interface of 2 materials

Posted 16 mai 2011, 01:16 UTC−4 Low-Frequency Electromagnetics, Geometry, Materials, Mesh Version 3.5a, Version 4.0, Version 4.0a, Version 4.1, Version 4.2 2 Replies

Sumeet Kumar
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Hi,

So I am not sure what is the best way to model a thin film heater (say around 1 micron) at the interface of 2 materials (each around a mm thick). I tried using surface heat flux option but that does not work because apparently the solver has to know how much gets divided into the 2 domains.
The problem with adding an extra thin layer of volumetric heat generating material is that the meshing becomes really complicated.

Any suggestion will be highly appreciated.

Best,
Sumeet
2 Replies Last Post 11 janv. 2012, 15:35 UTC−5
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Saâd Zouitene
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Posted: 1 decade ago 11 janv. 2012, 09:42 UTC−5
Hi,

I want to do the same thing but i have some convergence problems, can you give me some advices ?

thank you
Hi, I want to do the same thing but i have some convergence problems, can you give me some advices ? thank you
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 11 janv. 2012, 15:35 UTC−5
Hi

at least in HT (4.2a) you can add a boundary source, take a look at the simple model below, I have also added a suface "thin conductive layer". Material properties are just arbitrary.

If you are in a time dependent solver case be aware of the mesh size to time stepping versus material alpha (heat diffusivity) to respec. Take a look at the doc, or rather most "classical" HT textbooks.

--
Good luck
Ivar
Hi at least in HT (4.2a) you can add a boundary source, take a look at the simple model below, I have also added a suface "thin conductive layer". Material properties are just arbitrary. If you are in a time dependent solver case be aware of the mesh size to time stepping versus material alpha (heat diffusivity) to respec. Take a look at the doc, or rather most "classical" HT textbooks. -- Good luck Ivar

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