Hydrodynamical simulations of rotating stars. I - A model for subgrid-scale flow

Details Hydrodynamical simulations of rotating stars. I - A model for subgrid-scale flow Hydrodynamical simulations of rotating stars. I - A model for subgrid-scale flow

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...406..651c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 406, no. 2, p. 651-660.

Statistics

Computation

18

Computational Fluid Dynamics, Eddy Viscosity, Hydrodynamic Equations, Stellar Interiors, Stellar Rotation, Advection, Computational Grids, Energy Dissipation, Stellar Envelopes, Turbulent Diffusion

Scientific paper

A 2D/3D hydrodynamics code has been developed to study the interior fluid dynamics of oscillating, rotating stellar models on the upper main sequence. This paper provides an outline of the actual numerical scheme and includes a description of the model which is used to simulate the subgrid-scale (SGS) flow on nonuniform computational meshes. In the SGS regime, a nonisotropic eddy viscosity drives the turbulent diffusion of momentum and ensures the correct dissipation of kinetic energy.

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