Astrophysics and Space Science

, Volume 141, Issue 2, pp 347–351 | Cite as

On the hydrodynamics of accretion discs

I. An examination of a standard boundary condition
  • Chris Koen
Article
  • 23 Downloads

Abstract

The widely used boundary condition on the tangential stress in accretion discs is discussed and found wanting on a number of counts. In particular, it is shown that the value of the viscous energy dissipation calculated from it is unphysical. An alternative boundary condition is suggested. Using this, it is found that the energy balance in the disc places certain restrictions on the rotational velocity in the disc. It seems unlikely that the latter could be of the Keplerian form.

Keywords

Boundary Condition Energy Balance Energy Dissipation Rotational Velocity Tangential Stress 

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Copyright information

© Kluwer Academic Publishers 1988

Authors and Affiliations

  • Chris Koen
    • 1
  1. 1.Department of BiomathematicsUNIBOMmabatho, BophuthatswanaSouth Africa

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