Construction of an approximate solution of the problem of a cavitational flow around a disk

An approach to analytical analysis of a steady axisymmetric cavitation flow of a potential ideal incompressible fluid is developed. An approximate analytical solution of Ryabushinskii’s problem for a disk-shaped cavitator is constructed. All integral and local characteristics of the flow calculated by the proposed approximation formulas in a wide range of cavitation numbers are demonstrated to differ insignificantly from the numerical solution of the problem in the exact nonlinear formulation.