Abstract
view Abstract Citations (31) References (25) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Multiscale model equations for turbulent convection and convective overshoot Marcus, P. S. ; Press, W. H. ; Teukolsky, S. A. Abstract Most calculations of stellar or solar evolution take the boundaries of a convection zone to be where the radiative temperature gradient changes from super to subdiabatic (or vice versa) and take the interior thermal structure of a convection zone to be that given by standard mixing-length theory. Shortcomings of mixing-length theory arise because it is not a full physical theory, following from the Navier Stokes equations by formal manipulation. The approach proposed involves an elimination of the physical uncertainties associated with mixing-length theory. The set of time-dependent equations obtained models the multiscale and nonlocal effects of convective overshoot, location of the convective interface, time-dependent convection, and turbulent mixing. Publication: The Astrophysical Journal Pub Date: April 1983 DOI: 10.1086/160915 Bibcode: 1983ApJ...267..795M Keywords: Convective Flow; Flow Theory; Solar Physics; Turbulence Models; Turbulent Flow; Advection; Boundary Value Problems; Buoyancy; Navier-Stokes Equation; Viscosity; Vortices; Astrophysics full text sources ADS |
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