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Analysis of microwave heating of materials with temperature‐dependent properties
Author(s) -
Ayappa K. G.,
Davis H. T.,
Davis E. A.,
Gordon J.
Publication year - 1991
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690370302
Subject(s) - dielectric , galerkin method , thermal conduction , microwave , materials science , microwave heating , thermodynamics , transient (computer programming) , dielectric heating , homogeneous , thermal , heat equation , maxwell's equations , mechanics , composite material , finite element method , physics , mathematics , mathematical analysis , optoelectronics , quantum mechanics , computer science , operating system
Transient temperature profiles in multilayer slabs are predicted, by simultaneously solving Maxwell's equations with the heat conduction equation, using Galerkin finite elements. It is assumed that the medium is homogeneous and has temperature‐dependent dielectric and thermal properties. The method is illustrated with applications involving the heating of food and polymers with microwaves. The temperature dependence of dielectric properties affects the heating appreciably, as is shown by comparison with a constant property model.