Title :
Investigation of microwave heating with time varying material properties
Author :
Braunstein, J. ; Connor, K. ; Salon, S. ; Libelo, L.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Rensselaer Polytech. Inst., Troy, NY, USA
fDate :
5/1/1999 12:00:00 AM
Abstract :
Processing of materials at microwave frequencies is made difficult by physical properties that change significantly with temperature. A microwave heating model with material properties that change slowly with time and temperature has been developed. A frequency domain finite element solution of the electric field is coupled to time domain finite element diffusion equation to study the evolution of temperature profiles. The temperature change is determined from the balance of power dissipation, thermal diffusion and thermal convection
Keywords :
electromagnetic fields; finite element analysis; frequency-domain analysis; microwave heating; temperature distribution; thermal analysis; time-domain analysis; electric field; frequency domain finite element solution; microwave heating; physical properties; power dissipation; temperature profiles; thermal convection; thermal diffusion; time domain finite element diffusion equation; time varying material properties; Electromagnetic analysis; Electromagnetic heating; Finite element methods; Frequency domain analysis; Geometry; Material properties; Microwave ovens; Partial differential equations; Permittivity; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
