[仿真]The simulation of microwave using a rectangularwave guide Influence frequency and sample size

Abstract &X%vp?p  
Microwave heating–drying of wood using a wave guide is a relatively new area of research. In order to gain insight into the phenomena that [(d))(M$|  
occur within the wave guide together with the temperature distribution in the wood, a detailed knowledge of absorbed power distribution is !J/fJW>m6  
necessary. In this paper, a two dimensional numerical model is developed to predicted the distribution of electromagnetic fields (TE10-mode), 5;4bZ3e,0  
power and temperatures distributions within wood located in rectangular wave guide. A three dimensional finite difference time domain (FDTD) e^ ZxU/e  
scheme is used to determine electromagnetic fields and absorbed power by solving the transient Maxwell’s equations, and finite difference K:_5#!*^98  
method is used to obtain unsteady temperature profiles. Temperature dependence of wood dielectric properties is simulated through an iterative A])+Pe  
process. The simulations are performed illustrating the influence of irradiation times, working frequencies and sample size. The presented h!4jl0oX]  
modeling is used to identify the fundamental parameters and provides guidance for microwave drying o .. 6$*\
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