On the excitation of hydrodynamical turbulence in accretion discs

Details On the excitation of hydrodynamical turbulence in accretion discs On the excitation of hydrodynamical turbulence in accretion discs

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..797..271k&link_type=abstract

INTERACTING BINARIES: Accretion, Evolution, and Outcomes. AIP Conference Proceedings, Volume 797, pp. 271-276 (2005).

Physics

Fluid Dynamics

Accretion Disks, Astrophysical Fluid Dynamics, Hydrodynamics, Turbulence, Accretion And Accretion Disks, Hydrodynamics

Scientific paper

Our 2D numerical simulations confirm a possibility of excitation of hydrodynamic turbulence in the accretion disk due to shear instability under finite-amplitude perturbations and at high Reynolds number. These results disproves the well-known claims about the impossibility to excite the turbulence in accretion disks by hydrodynamic shear instability. Our estimations have shown that the development of turbulence results in the value of accretion rate corresponding to the αSS-coefficient in the range 0.08 ÷ 0.15.

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