3-D FE discontinuous sheet for microwave heating

Author

Ehlers, Richard A. ; Metaxas, A. C Ricky

Author_Institution

Eng. Dept., Univ. of Cambridge, UK

Volume

51

Issue

3

fYear

2003

fDate

3/1/2003 12:00:00 AM

Firstpage

718

Lastpage

726

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;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2003.808731

Filename

1191722