Calculation of plane supercavity shape under harmonic disturbances (Q2784943)

The paper presents the results of calculation for the length and shape of nonstationary cavities past a wedge. The fluid is assumed to be inviscid incompressible and weightless and at the upper and lower surfaces of the wedge the normal time periodic velocities are given. The variable cavity length is found in sequential times by numerical solving the equation of gas mass balance in the cavity. For each iteration the solution is calculated from a linear set of singular integral equations by the method of discrete singularities. The influence of elasticity of the gas filling the two-dimensional ventilated supercavity is investigated. A comparative analysis of unsteady behavior of plane and axisymmetric supercavities is given.