Journal of Microwave Power and Electromagnetic Energy (JMPEE)
TITLE	A Finite Element and Finite Difference Formulation for Microwave Heating Laminar Material [PDF]
AUTHORS	V Soriano, C. Devece and E. de los Reyes 1998 33 2 67-76
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Abstract A numerical model is presented for predicting the temperature distributions in microwave heating processes with varying dielectric and the thermo-physical properties. The non-linear partial differential equation for the temperature field with a microwave power source is solved numerically by means of a hybrid method, employing both the finite-element technique in the spare domain and the finite-difference technique in the time domain. The method is simplified further by considering a two-dimensional formulation. Moreover, a real microwave laminar material heating process with known dielectric and thermo-physical properties in a multimode cavity has been simulated, using modal analysis and perturbational method to calculate the electric field distribution. A comparison between numerical results and measured temperature distributions was obtained employing imaging techniques. Key Words: Microwave heating, Finite-element, Finite-difference, Temperature distribution