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New numerical solutions of three-dimensional compressible hydrodynamic convectionNumerical 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, H sub p. Although convective transport starts later in the evolution, vertical scales of H sub p are apparently selected at much earlier times by nonlinear compressive effects.
Document ID
19900045163
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hossain, Murshed (Delaware Univ. Newark, DE, United States)
Mullan, D. J. (Bartol Research Institute Newark, DE, United States)
Date Acquired
August 14, 2013
Publication Date
May 1, 1990
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 354
ISSN: 0004-637X
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NAGW-1295
Distribution Limits
Public
Copyright
Other