Cavity formation at the inclined separated impact on a circular cylinder under a free surface of a heavy liquid

Under study is a dynamic mixed problem concerning the impact on a circular cylinder and its subsequent movement with a constant speed in an ideal incompressible liquid. The influence is investigated of the physical and geometrical parameters of the problem on the cavity form and the configuration of the external free surface of the liquid for small times. An asymptotic analysis is carried out for the inner free boundary of liquid taking into account the dynamics of separation points. The reaction force of the medium on the cylinder is determined. The necessity is substantiated of introducing additional cavitation zones in the dynamic problem of impact.