DocumentCode :
2472524
Title :
Perpendicular-field EHD instabilities visualized in a tip-plane configuration
Author :
Vega, F. ; Pérez, A.T. ; García, F.J. ; Castellanos, A.
Author_Institution :
Dept. de Electron. y Electromagn., Seville Univ., Spain
fYear :
2002
fDate :
2002
Firstpage :
216
Lastpage :
219
Abstract :
EHD interfacial instabilities can be induced by corona discharge from a tip electrode onto a liquid-air interface. The corona current charges the liquid surface and instabilities may appear depending on the applied voltage and the liquid properties. We present a technique to detect the onset of instability based on image processing. To establish the instability threshold we apply an edge-detection algorithm to images of the liquid surface acquired through a video camera.
Keywords :
corona; edge detection; electrohydrodynamics; flow instability; EHD interfacial instability; corona discharge; edge detection algorithm; image processing; liquid-air interface; perpendicular field; surface charging; tip electrode; tip-plane configuration; video camera; Conductivity; Corona; Electrodes; Image edge detection; Image processing; Petroleum; Space charge; Surface discharges; Visualization; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2002 Annual Report Conference on
Print_ISBN :
0-7803-7502-5
Type :
conf
DOI :
10.1109/CEIDP.2002.1048774
Filename :
1048774
Link To Document :
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