Transient Thermal Analysis of an Eddy-Current Heated Conductor Applying FEM-DBCI

Author

Aiello, Giovanni ; Alfonzetti, S. ; Dilettoso, Emanuele ; Salerno, Nunzio

Author_Institution

Dipt. di Ing. Elettr., Elettron. e Inf., Univ. di Catania, Catania, Italy

Volume

49

Issue

5

fYear

2013

fDate

May-13

Firstpage

1861

Lastpage

1864

Abstract

A method is proposed for the computation of the transient heating of a conductor in which eddy currents flow, induced by time-harmonic source currents. The electrical field is assumed as unknown on a mesh of edge elements and is computed by a time-harmonic analysis. The heating power density inside the conductor is computed and a transient thermal analysis is started on the same mesh of nodal elements. This analysis is continued until the temperature-dependent electrical conductivity changes enough to require another time-harmonic eddy-current analysis. The combined procedure is iterated.

Keywords

eddy currents; electrical conductivity; finite element analysis; harmonic analysis; thermal analysis; Dirichlet boundary condition iteration; FEM-DBCI; eddy currents flow; eddy-current heated conductor; nodal elements; temperature-dependent electrical conductivity; time-harmonic analysis; time-harmonic eddy-current analysis; time-harmonic source currents; transient heating; transient thermal analysis; Eddy currents; finite element method; integral equations; transient thermal analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2241411

Filename

6514711