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Paper: 3 - D Simulation of Penetrative Convection with Rotation
Volume: 404, The Eighth Pacific Rim Conference on Stellar Astrophysics: A Tribute to Kam Ching Leung
Page: 283
Authors: Singh, H.P.; Pal, P.S.; Srivastava, M.P.; Chan K.L.
Abstract: Recently Pal et al. (2008) performed Large eddy simulations of turbulent compressible convection in stellar-type convection zones by solving the NaviLer-Stokes equations in three dimensions. They estimated the extent of penetration into the stable layer above a stellar-type convection zone by varying the rotation rate (Ω), the inclination of the rotation vector (Θ) and the relative stability (S) of the upper stable layer. Several models were computed and the penetration distance into the stable layer above the convection zone was estimated by determining the position where time averaged kinetic energy flux had the first zero in the upper stable layer for 17 different models. They found that the penetration distance increased as the rotation rate was increased for the case when the rotation vector is aligned with the vertical axis. However, with the increase in the stability of the upper stable layer, the upward penetration distance was found to decrease In this paper we have further computed some high resolution models to see the effect of increased resolution on the upward penetration distance. We also provide evidence of generation of gravity waves in the upper stable region.
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