Statistics – Computation
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.249..748m&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 249, April 15, 1991, p. 748-754.
Statistics
Computation
58
Accretion Disks, Astronomical Models, Binary Stars, Computational Astrophysics, Polytropic Processes, Three Dimensional Models, Hydrodynamics, Stellar Models, Two Dimensional Models
Scientific paper
Three-dimensional simulations were carried out of the formation and evolution of accretion disks in close binary systems, using the Smoothed Particle Hydrodynamics method to solve the fluid dynamic equations. Although the runs presented here refer to an ideal gas with different polytropic indices, and constitute the first stage of more physically complex forthcoming simulations, they nevertheless give some interesting results; the disk structure and dynamics are in agreement with standard models only for small gamma-values; as a consequence of the z-resolution it is found that disk formation is inhibited for gamma equal to or greater than 1.2, which means that some two-dimensional simulations of polytropic disks are meaningless; the disk is slightly asymmetric in the x-y plane and its profile is irregular and pulsating at the outer boundary.
Belvedere Gaetano
Lanzafame Giuseppe
Molteni Diego
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