Majorant model of electrization of a supersonic gas–particle jet, impinging a solid body

A simple model is suggested to describe electrization of the particulates, accelerated by a supersonic jet and rebounding from a solid body, taking into consideration their spinning, Magnus force, mutual influence of the spin and transport movement relatively to the carrying gas. Every particulate rebounded from the body is suggested to obtain identical electriral charge majorized with the value corresponding to the local limiting value of the electric field intensity near the particle surface («majorant» model). Numerical investigations of gas–particle jet flows are carried out for the set of governing parameters characteristic for “typical” wind–tunnel experiment. The spatial distribution of the electric potential, the surface distribution of the electric current and dependence of the total current through the grounded conducting body on the radius and physical properties of the particle substance are plotted. An electric charge of the particulates impinging the body, their collisions with the rebounding particulates and Lorentz force, acting upon the later, are neglected.