The Eddy-heat flux as stabilizing cold accretion disks

Details The Eddy-heat flux as stabilizing cold accretion disks The Eddy-heat flux as stabilizing cold accretion disks

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..431..117f&link_type=abstract

Accretion processes in astrophysical systems: Some like it hot! - eigth astrophysics conference. AIP Conference Proceedings, Vo

Astronomy and Astrophysics

Astrophysics

Hydrodynamics, Accretion And Accretion Disks

Scientific paper

The time-dependent vertical structure of a cold accretion disk is studied semi-analytically and a stability criterion has been derived. Turbulent heat transfer is able to stabilize thermally if the Prandtl number as well as the viscosity α is lower than, say, 0.1. However, for very low values of these parameters numerical simulations reveal the onset of over-stability.

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