Numerical simulations of axisymmetric adiabatic flow past a gravitating solid sphere

Details Numerical simulations of axisymmetric adiabatic flow past a gravitating solid sphere Numerical simulations of axisymmetric adiabatic flow past a gravitating solid sphere

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.236..817m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 236, Feb. 15, 1989, p. 817-828. Research supported by t

Astronomy and Astrophysics

Astronomy

7

Adiabatic Flow, Astronomical Models, Axisymmetric Flow, Stellar Gravitation, Accretion Disks, Atmospheres, Computerized Simulation, Euler Equations Of Motion, Stellar Mass Accretion, Vortex Rings

Scientific paper

Eulerian equations are used to numerically simulate the uniform axisymmetric flow past a gravitating solid sphere. The flow is shown to be unsteady if the central body does not adsorb gas. In the present model, an atmosphere is formed around the body from incident gas, and vortex rings develop in the atmosphere due to the influence of Kelvin-Helmholtz instability on the atmospheric surface. The detached distance to the bow shock oscillates with an amplitude and period which depend on the numerical resolution.

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