Effects of EHD and external air flows on electric corona discharge in pin-plate configuration

Author

Zhao, Lin ; Adamiak, Kazimierz

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, Ont., Canada

Volume

4

fYear

2005

fDate

2-6 Oct. 2005

Firstpage

2584

Abstract

The effect of airflow, including the electrohydrodynamic (EHD) flow produced by the electric corona discharge, and the flow generated externally on the corona discharge has been investigated numerically in this paper. Contrary to the common assumption that the corona discharge and the EHD flow can be decoupled by neglecting the convection term in the current density equation, the equations for the electric field, charge transport and fluid flow have been solved simultaneously. The numerical algorithm is based on the boundary and finite element methods (BEM and FEM), the method of characteristics (MOC) and the finite volume method (FVM). The simulation results confirm that the EHD flow has a very small effect on the corona discharge. However, in some configurations the external airflow may have considerable effect on the V-I characteristics of the system and the current density distribution on the ground electrode.

Keywords

boundary-elements methods; corona; current density; earth electrodes; electrohydrodynamics; finite element analysis; finite volume methods; flow; EHD; FEM; V-I characteristics; boundary element method; charge transport; current density distribution; current density equation; electric corona discharge; electric field equation; electrohydrodynamic flow; external air flow; finite element method; finite volume method; fluid flow; ground electrode; method of characteristics; numerical algorithm; numerical simulation; pin-plate configuration; Corona; Current density; Electric potential; Electrodes; Electrohydrodynamics; Equations; Fluid flow; Mathematical model; Numerical simulation; Space charge;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2005. Fourtieth IAS Annual Meeting. Conference Record of the 2005

ISSN

0197-2618

Print_ISBN

0-7803-9208-6

Type

conf

DOI

10.1109/IAS.2005.1518824

Filename

1518824