Image analysis of gas-phase EHD flow field for needle-plane electrode system

Author

Fukumoto, Masaru ; Ohyama, Ryu-ichiro

Author_Institution

Dept. of Electr. Eng., Tokai Univ., Kanagawa, Japan

fYear

2003

fDate

19-22 Oct. 2003

Firstpage

694

Lastpage

697

Abstract

Velocity distribution of a gas-phase electrohydrodynamical (EHD) flow on a needle-plane electrode system was experimentally analyzed by a particle image velocimetry (PIV). The flow visualization for suitable image analysis was carried out by diffusing insulating oil vapor and using an image intensifier. The Coulomb´s force as a typical driving force of ionic wind inception was numerically estimated by current continuity equation and Poisson´s equation with a boundary condition of corona discharge current distribution. For analyzing the observed ionic wind, the intensity of ionic wind velocity near the corona discharge electrode was characterized with the estimated Coulomb´s force density.

Keywords

electrohydrodynamics; flow visualisation; velocimeters; Coulomb´s force; Poisson´s equation; corona discharge current distribution; current continuity equation; diffusing insulating oil vapor; flow visualization; gas-phase EHD flow field; image analysis; image intensifier; ionic wind inception; needle-plane electrode system; particle image velocimetry; velocity distribution; Boundary conditions; Corona; Current distribution; Electrodes; Image analysis; Image intensifiers; Oil insulation; Petroleum; Poisson equations; Visualization;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2003. Annual Report. Conference on

Print_ISBN

0-7803-7910-1

Type

conf

DOI

10.1109/CEIDP.2003.1254949

Filename

1254949