ABSTRACT
Microwave processing of materials attain constant due to its certain features like volumetric heating, less processing time and less power consumption as compared to conventional heating. Microwave heating of materials inside oven involves electromagnetic and thermal phenomena. These two phenomena should be solved simultaneously using a coupled approach so microwave heating needs to be simulated as electromagnetic and heat transfer equation in cyclic manner. Electromagnetic phenomenon causes power dissipation due to which heat generation takes place inside the material. Because of heat transfer, there is temperature change in the charge, which further results into dielectric material properties, which then again influences heat generation and thus completing the cycle. Thus to understand this concept of electromagnetic field interaction with nonferrous material aluminum has been simulated using comsol multiphysics software. Simulation results shows that the temperature in the aluminum material reaches up to 284 K in 15 seconds and surface electric field norm at 8×103 V/m in 15 seconds by exposure of microwave radiation at 1 KW.
