3d accretion discs dynamics: Numerical simulations

Abstract

In this report the main attention is paid at physics of accretion discs in close binary systems and particularly at formation of waves in discs. The characteristic features and possible observational manifestations of the “hot line”shock wave formed due to interaction between the circumdisc halo and the stream from the inner Lagrangian point, two arms of the tidal shock, the precessional spiral density wave in cold discs, and the spiral-vortex structure in hot discs are discussed. The analysis of the numerical model and comparison of computational results with observational data allow us to define more exactly the physical processes resulting in formation of structures in accretion discs in binary stars.