Title :
Experimental flow measurements of electrohydrodynamic convection fields by particle image velocimetry
Author :
Ohyama, Ryu-ichiro ; Kaneko, Kiyoji
Author_Institution :
Dept. of Electr. Eng., Tokai Univ., Kanagawa, Japan
Abstract :
A method of particle image velocimetry has been proposed for measuring flow velocity of electrohydrodynamic (EHD) convection fields in dielectric liquids. The flow velocity is calculated from the average moving distance and direction of the tracer particles traveling along with the fluid flow. The method has the great advantage that it enables the continuous measurement of the velocity distribution of unsteady flow fields. Some interesting velocity distributions are obtained for silicone oil which is electrically and thermally stressed under non-uniform electric fields. The experimental results show an analogy between natural convection and the EHD convection. We conjecture that the EHD convection is formed as a driving action causing energy release at the tip of the electrode
Keywords :
dielectric liquids; electrohydrodynamics; flow measurement; forced convection; particle velocity analysis; silicone insulation; velocity measurement; continuous velocity distribution measurement; dielectric liquids; electrical stressing; electrode tip energy release; electrohydrodynamic convection fields; flow measurements; flow velocity measurement; nonuniform electric fields; particle image velocimetry; silicone oil; thermal stressing; tracer particles; unsteady flow fields; Dielectric liquids; Dielectric measurements; Electrohydrodynamics; Fluid flow; Fluid flow measurement; Nonuniform electric fields; Particle measurements; Petroleum; Thermal stresses; Velocity measurement;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1996., IEEE 1996 Annual Report of the Conference on
Conference_Location :
Millbrae, CA
Print_ISBN :
0-7803-3580-5
DOI :
10.1109/CEIDP.1996.564695
