Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990arb..nasa..247c&link_type=abstract
In its Annual Research Briefs, 1989 p 247-259 (SEE N92-30149 20-34)
Astronomy and Astrophysics
Astrophysics
Accretion Disks, Channel Flow, Compressibility Effects, Free Convection, Low Reynolds Number, Solar System Evolution, Turbulence, Turbulent Flow, Astrophysics, Computerized Simulation, Incompressible Flow, Magnetohydrodynamics, Rotating Disks, Stratification
Scientific paper
Differentially rotating disks of gases and solids occur in several astrophysical systems, in particular in the inner parts of protostellar nebulae, of which our own solar system is thought to be a relic. The objectives of this paper are to: (1) study localized turbulence in circumstances approximating those found in accretion disks using previously existing expertise in performing direct numerical simulation of turbulent, incompressible channel flows with low Reynolds numbers; (2) determine the limitations of such calculations; and (3) extend the type of numerical simulation (e.g., to include density and stratification and compressibility effects and to accommodate higher Reynolds numbers with sub-grid scale modeling) so that the relevant physical effects are realistically captured.
Cabot William
Cassen Pat
Pollack James B.
Thompson Kevin W.
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