Substantiation of the parameters of the erosion jet underwater face

Abstract

A physical model is developed for the contact of a turbulent flooded axisymmetric water erosion jet with an underwater face of incoherent soil. To develop a mathematical model, an assumption was made about the possibility of describing the process by an idealized calculation model obtained using experimental data and generalized by the methods of similarity theory and turbulent jets. As a result of evaluative processing of experimental data, empirical dependences are obtained to determine the geometric parameters necessary when constructing the contact surface of the erosion jet with eroded soil. The final formation of a mathematical model of the underwater zone of erosion of the suction dredge is carried out with the determination of the numerical values of the specified list of empirical coefficients. Testing of the developed method for calculating jet desintegrants took place during the development of the draft ejector dredger ZNS 630-90.