Modified Artificial Viscosity in Smooth Particle Hydrodynamics

Details Modified Artificial Viscosity in Smooth Particle Hydrodynamics Modified Artificial Viscosity in Smooth Particle Hydrodynamics

1996-12-05

arxiv.org/abs/astro-ph/9612050v2

Astronomy and Astrophysics

Astrophysics

Seven pages and 17 figures, accepted for publication in A&A main journal. (Here a latex version is included, and the figures h

Scientific paper

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.

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