Turbulence in differentially rotating thin disks - A multi-component cascade model

Details Turbulence in differentially rotating thin disks - A multi-component cascade model Turbulence in differentially rotating thin disks - A multi-component cascade model

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...255..427g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 255, no. 1-2, p. 427-442.

Mathematics

Dynamical Systems

21

Accretion Disks, Magnetohydrodynamic Turbulence, Mathematical Models, Rotating Disks, Angular Momentum, Coupling, Dynamical Systems, Shear Stress

Scientific paper

In this paper, a theoretical model is presented which models some of the aspects of the dynamics of three-dimensional magneto-hydrodynamic turbulence in a differentially rotating accretion disk. A set of simplified non-linear dynamical equations is derived. Numerical solutions of these equations show chaotic behavior. In particular, the turbulent shear stress shows large fluctuations on timescales of a few rotation periods. The relevance of these results for the mass-transport and structure of thin accretion disks is briefly discussed.

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