Title :
Finite element modeling of the RF heating process
Author :
Choi, C.T.M. ; Konrad, A.
Author_Institution :
General Electric Co., Schenectady, NY, USA
fDate :
9/1/1991 12:00:00 AM
Abstract :
The heating of heterogeneous materials by radio frequency excitation is modeled by sequential electromagnetic and thermal analysis using the finite-element method. The electromagnetic analysis comprises electrostatic modeling using temperature-dependent complex dielectric permittivity to account for the energy dissipating losses in the material. The thermal analysis consists of a transient finite-element procedure with temperature-dependent thermal and material properties. The results show good agreement with transient thermal measurements.
Keywords :
electric fields; finite element analysis; heat conduction; heat losses; permittivity; radiofrequency heating; thermal properties of substances; FEA; RF heating; electromagnetic analysis; electrostatic modeling; energy dissipating losses; heat conduction; heterogeneous materials; material properties; radio frequency excitation; temperature-dependent complex dielectric permittivity; thermal analysis; transient finite-element procedure; transient thermal measurements; Dielectric losses; Dielectric materials; Electromagnetic analysis; Electromagnetic heating; Electromagnetic modeling; Electromagnetic transients; Electrostatics; Finite element methods; Permittivity; Radio frequency;
Journal_Title :
Magnetics, IEEE Transactions on
