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Computer modeling of non-stationary gas quasi-Keplerian disk Astrophysical Disks

Наименование публикации Computer modeling of non-stationary gas quasi-Keplerian disk Astrophysical Disks
Тип публикации Статья
Библиографическое описание Khoperskov, A. V. Computer Modeling of Non-Stationary Gas Quasi-Keplerian Disk / Alexander V. Khoperskov, Sergej S. Khrapov // Astrophysical disks. Collective and Stochastic Phenomena // editors : Alexei M. Fridman, Mikhail Ya. Marov, Ilya G. Kovalenko. — 2006. — Vol. 337, Part II. — Pp. 217-229.
Аннотация We have considered convective instability in a plane of a disk. In this case nonaxisymmetric perturbations are unstable, and the reason of a convection is connected with a radial non-homogeneity of thermodynamic parameters in quasi-Keplerian disk. On the basis of the linear analysis of stability in WKBapproximation the borders of stability are received. The hydrodynamical model of a non-stationary gas disk in the gravitational field of dot mass is constructed. We have studied nonlinear dynamics of convective unstable perturbations because of radial non-homogeneous entropy, neglecting effects of cooling and viscosity. The opportunity of formation of spiral-cellular structure of convective perturbations with shock waves is shown here.
Ключевые cлова hydrodynamics, accretion disk, instability, convection
Год публикации 2006
Электронная копия публикации Загрузить