Theory for the Electromagnetic Heating Interfaces
COMSOL Multiphysics provides four multiphysics interfaces for handling electromagnetic heating in the Heat Transfer interfaces:
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The Joule Heating Interface
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The Laser Heating Interface (requires the Wave Optics Module)
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The Induction Heating Interface (requires the AC/DC Module for 3D models)
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The Microwave Heating Interface (requires the RF Module)
They all have in common these three multiphysics coupling features:
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Electromagnetic Heat Source
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Boundary Electromagnetic Heat Source
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Temperature Coupling
The first two features add weak contributions due to resistive losses in the domains and boundaries, respectively. The underlying theory can be found in the AC/DC Module User’s Guide, RF Module User’s Guide, and Wave Optics Module User’s Guide.
The reverse coupling is carried by the Temperature Coupling feature that shares the temperature variable with the electromagnetics interfaces.