ТЕОРЕТИЧЕСКИЕ И ЭКСПЕРИМЕНТАЛЬНЫЕ ИССЛЕДОВАНИЯ ПО ОПРЕДЕЛЕНИЮ СТРУЙНОГО ДАВЛЕНИЯ РАБОЧЕЙ ЖИДКОСТИ НА ОБРАБАТЫВАЕМУЮ ПЛОСКУЮ ПОВЕРХНОСТЬ

A mathematical model for  calculation of a jet power impact on a barrier consisting of a corrosive deposit layer  has been proposed on the basis of an upper-bound method and accepted assumptions. A variational problem associated with determination of a minimum destruction pressure has been solved and a theoretical dependence for pressure calculation at the point of jet-barrier collision with due account of mechanical properties of the destroyed material and kinematic jet parameters has been obtained in the paper. Comparison of experimental data obtained by means of the EDP-30 sensor with the theoretical ones has shown a divergence of 15–19 % within velocity range of the jet impact from 150 to 300 m/s.