Coupled electro-thermal-flow model for very long electric arcs

Author

Hu, Wanping ; Lavers, J.D.

Author_Institution

Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada

Volume

33

Issue

2

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

1726

Lastpage

1729

Abstract

A mathematical model that couples the electrical potential in the arc with the resulting thermal and flow fields has been developed to describe the behaviour of the arc plasma in a DC electric arc furnace. The set of conservation equations, along with a potential equation for the electric field, were solved using the PHOENICS software package. Key aspects of the modelling problem, necessary to achieve a stable and meaningful numerical solution for the long DC electric arc, are evaluated. These aspects involve convergence issues as well as the treatment of the nonlinearities. Particular attention was given to the selection and adjustment of several under-relaxation factors

Keywords

arc furnaces; arcs (electric); digital simulation; electric fields; electrical engineering computing; flow; thermal analysis; DC electric arc furnace; PHOENICS software package; arc plasma behaviour; conservation equations; convergence issues; coupled electro-thermal-flow model; electrical potential; flow field; long DC electric arc; modelling problem; nonlinearities treatment; potential equation; thermal field; under-relaxation factors; very long electric arcs; Couplings; Equations; Furnaces; Geometry; Plasma accelerators; Plasma applications; Plasma properties; Plasma stability; Solid modeling; Steel;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.582606

Filename

582606