Title :
A two fluid model of EHD flow in dielectric liquids
Author_Institution :
Dept. of Electr. Eng., Windsor Univ., Ont., Canada
Abstract :
The Navier-Stokes equation for a charged liquid in electrohydrodynamic (EHD) flow can be reduced to statement of Bernoullian invariance with the assumption that there is a Beltrami flow field in existence. There are, however, two possible scenarios for this process, corresponding respectively to the presence of either a Beltrami flow field which is force-free or one which is not so. Electronic charge can, according to fuzzy logic, be present simultaneously in states corresponding to each of these scenarios. An electrohydrodynamic model thus emerges in which two flow components coexist with one driven by the release of the energy of Coulomb repulsion of trapped charge which is normally neglected in EHD flow theory theory successfully accounts for some superfluid-like phenomena encountered in the EHD flow of heavily aged transformer oil
Keywords :
Navier-Stokes equations; dielectric liquids; electrohydrodynamics; Beltrami flow field; Bernoullian invariance; Coulomb repulsion; EHD flow; Navier-Stokes equation; ageing; dielectric liquid; electronic charge; fuzzy logic; superfluid; transformer oil; two-fluid model; Aging; Breakdown voltage; Dielectric liquids; Electron traps; Engines; Fuzzy logic; Kinetic energy; Navier-Stokes equations; Petroleum; Space charge;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1998. Annual Report. Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5035-9
DOI :
10.1109/CEIDP.1998.733918