Title :
Experimental investigation on the effect of viscosity in EHD instability
Author :
Wang, H.T. ; Cross, J.D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Abstract :
The wavenumber of the EHD (electrohydrodynamic) interfacial instability and its viscosity dependence are discussed. A quantitative expression for the EHD wavenumber for transient unipolar injection is derived and verified experimentally by using a specially designed test cell. It is shown that the wavenumber varies not only as η-2/3 , but also as the electric field, the injection strength of space charges at the injector, the permittivity and mass density of the liquid, and the electrode separation. The experimental results are in good agreement with the theoretical prediction
Keywords :
dielectric properties of liquids and solutions; electrohydrodynamics; permittivity; viscosity of liquids; EHD instability; electric field; electrode separation; injection strength; mass density; permittivity; space charges; test cell; transient unipolar injection; viscosity; wavenumber; Acceleration; Delay effects; Dielectric liquids; Fluid dynamics; Gravity; Permittivity; Space charge; Testing; Viscosity; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1990. Annual Report., Conference on
Conference_Location :
Pocono Manor, PA
DOI :
10.1109/CEIDP.1990.201412
