Experimental investigation of the effect of injection of products of decomposition of pastelike coolant on the electrical conductivity of the flow of pulsed MHD generator

A large-scale model of the channel of a pulsed MHD generator is investigated in an applied electric field. It is demonstrated that the flow of plasma under conditions of wall protection by way of injecting the products of decomposition of a pastelike coolant is realized with a clearly pronounced core and thin boundary layers. In the case of injection on the insulating walls alone, the integral electrical conductivity of flow remains almost constant in a wide range of injection intensity up to the value of $4\%$. The injection into the electrode boundary layer causes a considerable reduction of its electrical conductivity.