Modified artificial viscosity in Smooth Particle Hydrodynamics
Received 16 September 1995 / Accepted 19 November 1996
Artificial viscosity is needed in Smooth Particle Hydrodynamics to prevent interparticle penetration, to allow shocks to form and to damp post shock oscillations. Artificial viscosity may, however, lead to problems such as unwanted heating and unphysical solutions. A modification of the standard artificial viscosity recipe is proposed which reduces these problems. Some test cases discussed.
Key words: accretion, accretion disks hydrodynamics shock waves stars: formation galaxies: formation
© European Southern Observatory (ESO) 1997
Online publication: April 28, 1998