Statistics – Computation
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...354l..33h&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 354, May 1, 1990, p. L33-L36.
Statistics
Computation
18
Compressible Flow, Computational Fluid Dynamics, Convective Flow, Hydrodynamic Equations, Stellar Physics, Three Dimensional Flow, Convergence, Divergence, Eddy Currents, Flow Velocity, Numerical Flow Visualization, Sound Waves
Scientific paper
Numerical solutions of three-dimensional compressible hydrodynamics (including sound waves) in a stratified medium with open boundaries are presented. Convergent/divergent points play a controlling role in the flows, which are dominated by a single frequency related to the mean sound crossing time. Superposed on these rapid compressive flows, slower eddy-like flows eventually create convective transport. The solutions contain small structures stacked on top of larger ones, with vertical scales equal to the local pressure scale heights, Hp. Although convective transport starts later in the evolution, vertical scales of Hp are apparently selected at much earlier times by nonlinear compressive effects.
Hossain Murshed
Mullan Dermott J.
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