Title :
Polarity effect on electrical current conduction and electrohydrodynamically induced fluid flow in a AW type EHD pump
Author :
Ohyama, R. ; Watson, A. ; Chang, J.S.
Author_Institution :
Dept. of Electr. Eng., Tokai Univ., Kanagawa, Japan
Abstract :
A new type of nonintrusive two-phase EHD pump “AW type EHD pump” was developed, where the electrode system consists of a corona wire electrode in gas-phase and a plate electrode inclined in a gas-liquid interface. The fundamental characteristics of the two-phase EHD pump such as time averaged pumping flow rate, time averaged current-voltage characteristics, liquid film thickness and flow velocity of working fluid at the plate electrode surface etc. were investigated. The effect of discharge polarity on electrical current conduction and electrohydrodynamically induced liquid flow is discussed in detail in the terms of a dimensionless parameter
Keywords :
corona; electrohydraulic control equipment; electrohydrodynamics; flow control; pumps; two-phase flow; AW type EHD pump; corona wire electrode; dimensionless parameter; electrical current conduction; electrohydrodynamically induced fluid flow; flow velocity; gas-liquid interface; inclined plate electrode; liquid film thickness; liquid pumping rate; nonintrusive two-phase EHD pump; polarity effect; time averaged current-voltage characteristics; time averaged pumping flow rate; Charge coupled devices; Charge-coupled image sensors; Corona; Electrodes; Fluid flow; Pumps; Surface discharges; Time measurement; Voltage; Wire;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-6413-9
DOI :
10.1109/CEIDP.2000.885227
