A magnetic system for a magnetohydrodynamic machine ensuring a given steepness of the drop of the inductance along the axis of the channel

I. A. Dumin'

Abstract
This paper proposes a form of the profile of the electrode tips of the electromagnet, ensuring a change of the component of the inductance of the magnetic field transverse to the axis of the channel of a magnetohydrodynamic machine, in accordance with the law (l−expax)^−l (x is the coordinate in the longitudinal direction of the axis). In this case, a given rate of drop is ensured by an appropriate choice of the value of the coefficient a; A calculating method is expounded and a family of curves is given, making it possible to determine the profile of the tips at different values of a. The article presents the results of a verification modelling of the field in an electrolytic bath; the results show that the real dependence of the change in the inductance along the axis coincides better with the theoretical dependence the slower the drop in the curve.