MLSPH: An Alternative to Smoothed Particle Hydrodynamics

Details MLSPH: An Alternative to Smoothed Particle Hydrodynamics MLSPH: An Alternative to Smoothed Particle Hydrodynamics

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...19513808w&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #138.08; Bulletin of the American Astronomical Society, Vol. 32, p.886

Astronomy and Astrophysics

Astrophysics

Scientific paper

Smoothed Particle Hydrodynamics (SPH) is the primary numerical tool used to simulate galaxy interactions, and is extensively used in other fields of astrophysics and high-strain hydrodynamics. The reliability of SPH simulations is limited by consistency, accuracy, and artificial viscosity. These limitations can create results which depend on rather arbitrary numerical parameters rather than on the physical behavior of the modelled system. We have been studying alternatives to traditional SPH based on local polynomial modeling. These methods, including ``Moving Least-Squares Particle Hydrodynamics,'' show great promise in improving or eliminating the problems found in traditional SPH. We present an overview of this methods along with preliminary results obtained during the validation of these methods.

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