Structure of the field in magnetohydrodynamic machines with an expanding magnetic core

A. P. Ogorodnikov

Abstract
On the basis of an investigation of an approximate model of a magnetohydrodynamic machine, without taking account of the saturation of the magnetic system, analytical expressions are obtained for the magnetic induction in the working gap, without a load. It is shown that, in this type of magnetohydrodynamic machine, in addition to the pulsating field due to the shunting of the magnetic flux, there arises a pulsating field due to expansion of the magnetic core. The conditions under which there are no pulsation fields are found. The article gives the results of investigations which confirm the correctness of the solutions obtained.