Abstract

The study of cumulative jet formation criteria for the hydrodynamic model of active object

Vladimir Vitkovskiy (Special Astrophysical Observatory of RAS)

Kirill Halin (Stavropol State University)

The computer simulation of the cumulative effect due to the shock wave high velocity was demonstrated that the pure hydrodynamic model describe all jets properties successfully. Both limited and unlimited energy and pressure on such compression was considered. In both cases a cumulative gas jet arises in the region of Riemann wave interference, the extent to which the gas-dynamic quantities accumulate being the same as for unlimited self-similar two-dimensional compression of a gas prism. The report describes the formation of high-velocity cumulative jets, the structure of jets, deduces a number of relationships between the velocity of the high-velocity jets and various parameters and attempts to examine the high-velocity and the basic cumulative jet as the outflow of a gas under high pressure into a vacuum. The outcomes of numerical experiment are presented in 3D view for the objects various type and parameters. The results of the computer simulation are in a good agreement with both the available experimental data and the analytical estimations in terms of a hydrodynamic theory of cumulating.

Mode of presentation: poster