EHD surface waves of diesel oil thin films generated by wire-plate barrier discharges

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI:10.1109/CEIDP.1997.641162

Jen-Shih Chang, K. Urashima, J. Cho, G. Artana, G. Touchard

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引用次数: 1

Abstract

An experimental investigation has been conducted to study electrohydrodynamically (EHD) induced surface wave phenomena on the surface of dielectric diesel oil thin films under wire-plate barrier discharges. Experimental arrangements used in the present investigation consisted of a corona wire, air gaps, thin oil film, mylor sheet and conducting transparent sheet placed on the lucite plate. Positive dc (on/off) high voltage was imposed on the corona wires and the conducting sheet was grounded. Diesel oil is used as a working fluid (/spl epsi//sub s/=2.2 and /spl sigma/5/spl times/10/sup -/5 /spl mu/S/m). The experimental results show that: (1) Thin oil film started to deform immediately when dc voltage is imposed and a small elongated ring shape hydraulic jump expanding wave is formed; (2) after thin oil film becomes significantly charged, a formation of depressing expanding elongated ring-shaped waves are observed and relatively uniform oil thin films formed below corona wires; (3) after voltage is off, a formation of depression expanding waves is observed and the surface waves keep forming and decay until all the electric charges at the surface of the diesel oils are relaxed.

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线板阻挡放电产生的柴油薄膜EHD表面波

实验研究了线板阻挡放电作用下介电柴油薄膜表面电流体动力诱导的表面波现象。在本研究中使用的实验布置包括电晕线，气隙，薄油膜，mylor片和导电透明片放在萤光石板上。在电晕线上施加正直流(开/关)高压，导电片接地。使用柴油作为工作流体(/spl epsi//sub s/=2.2和/spl sigma/5/spl times/10/sup -/5 /spl mu/ s/ m)。实验结果表明:(1)施加直流电压时，薄油膜立即开始变形，形成一个细长环状的小跃变膨胀波;(2)油膜明显带电后，形成压抑膨胀的细长环状波，电晕线下形成相对均匀的油膜;(3)断电压后，观察到凹陷膨胀波的形成，表面波继续形成并衰减，直到柴油表面的所有电荷都松弛。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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