Title :
3-D FE discontinuous sheet for microwave heating
Author :
Ehlers, Richard A. ; Metaxas, A. C Ricky
Author_Institution :
Eng. Dept., Univ. of Cambridge, UK
fDate :
3/1/2003 12:00:00 AM
Abstract :
This paper presents a method for modeling the electromagnetic properties of thin metallic films typical of electromagnetically active food packages within multimode microwave applicators. A discontinuous sheet with six degrees of freedom (DOF) is incorporated within a time- or frequency-domain edge finite-element formulation by splitting the tetrahedral-element discretized domain on the thin-film surface and adding new DOF. Superior accuracy is observed when comparing with existing surface sheet conditions. Thermal image validation is provided for multimode applications.
Keywords :
computational electromagnetics; finite element analysis; food processing industry; metallic thin films; microwave heating; modelling; ovens; packaging; 3D FE discontinuous sheet; EM properties modeling; electromagnetic properties; electromagnetically active food packages; finite-element formulation; frequency-domain edge FE formulation; microwave heating; microwave ovens; multimode microwave applicators; six degrees of freedom; tetrahedral-element discretized domain splitting; thermal image validation; thin metallic films; time-domain edge FE formulation; Boundary conditions; Conductive films; Electromagnetic heating; Impedance; Iron; Maxwell equations; Microwave theory and techniques; Packaging; Transistors; Transmission line matrix methods;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2003.808731
