EFFECT OF A ROTATING MAGNETIC FIELD ON CONVECTION STABILITY 
AND CRYSTAL GROWTH IN ZERO GRAVITY AND ON THE GROUND

A. I. Feonychev and N. V. Bondareva

UDC 538.4:532.6:532.78

A numerical study of the flows arising in a conducting 
liquid under the action of a rotating magnetic field as well as under 
its interaction with gravitational and thermocapillary convection 
has been made. The boundaries of the transition to the oscillating 
regime of convective flows have been determined. Regions of mixed 
flows, in which the impurity macrosegregation in crystals grown by 
the Bridgman and floating-zone methods decrease, have been revealed. 
It has been shown that regions of flows in which both a smooth increase 
in the impurity macrosegregation and a change in the form of a clearly 
defined extremum are observed also exist. The possibilities of mathematical 
modeling of geophysical problems with the use of a rotating magnetic 
field are discussed.

Moscow Aircraft Institute, 5 Leningradskoye Shosse, Moscow, 
125080, Russia; email: ab246@mail.sitek.ru. Translated from 
Inzhenerno-Fizicheskii Zhurnal, Vol. 77, No. 4, pp. 50-61, July-August, 2004. 
Original article submitted April 30, 2003; revision submitted 
September 3, 2003.