Electronic edition ISSN 1574-0579

MHD flow around a sphere with internal source of electromagnetic field

V. I. Shatrov , V. I. Yakovlev

Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090 Russia

Abstract
Studies of the effect of electromagnetic body forces on the hydrodynamic pattern, of the flow around bodies propelled by internal sources of electromagnetic fields have become of interest in connection with the design of electromagnetic propulsion systems for submarines and surfaces vessels. Such studies for the case of a sphere as an example were done numerically for two types of the electromagnetic held, sources. In the self-moving mode the flow around a sphere was without separation, the pressure drag coefficient was almost an order of magnitude less than its classical value in the absence of the electromagnetic fields, and the total drag coefficient was ^ times less than its classical value in the case Re = 105. The variation problem, for determining the optimum, electrical and magnetic potentials was formulated and it was solved in the simplified case. Table 3, Figs 6, Refs 7.