Godunov-type methods for stellar collapse

Details Godunov-type methods for stellar collapse Godunov-type methods for stellar collapse

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...235..535m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 235, no. 1-2, Aug. 1990, p. 535-542. Research supported by CICYT.

Statistics

Computation

11

Computational Astrophysics, Computational Fluid Dynamics, Gravitational Collapse, Shock Waves, Supernovae, Adiabatic Conditions, Boundary Value Problems, Equations Of State, Jacobi Matrix Method, Supernova Remnants

Scientific paper

A linearized Riemann solver (Glaister, 1988) was implemented into a Lagrangian hydrodynamical code, and it was applied to spherically symmetric stellar collapse. A sample of stellar collapse calculations was carried out, with this code and a standard finite difference scheme which uses the artificial viscosity technique. The initial model and the equation of state was kept fixed to be able to compare the two methods directly. Differences in the behavior of the velocity field and the global energetics of the collapse are found.

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