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A method of smoothed particle hydrodynamics using spheroidal kernelsWe present a new method of three-dimensional smoothed particle hydrodynamics (SPH) designed to model systems dominated by deformation along a preferential axis. These systems cause severe problems for SPH codes using spherical kernels, which are best suited for modeling systems which retain rough spherical symmetry. Our method allows the smoothing length in the direction of the deformation to evolve independently of the smoothing length in the perpendicular plane, resulting in a kernel with a spheroidal shape. As a result the spatial resolution in the direction of deformation is significantly improved. As a test case we present the one-dimensional homologous collapse of a zero-temperature, uniform-density cloud, which serves to demonstrate the advantages of spheroidal kernels. We also present new results on the problem of the tidal disruption of a star by a massive black hole.
Document ID
19950041418
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Fulbright, Michael S.
(Univ. of Arizona, Tucson, AZ United States)
Benz, Willy
(Univ. of Arizona, Tucson, AZ United States)
Davies, Melvyn B.
(California Inst. of Technology, Pasadena, CA United States)
Date Acquired
August 16, 2013
Publication Date
February 10, 1995
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 440
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
95A73017
Funding Number(s)
CONTRACT_GRANT: NSF AST-02-06378
Distribution Limits
Public
Copyright
Other

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