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Paper: Hydrodynamical Simulations of Convection Using 2D VULCAN
Volume: 293, 3D Stellar Evolution
Page: 64
Authors: Asida, S. M.
Abstract: In the last several years, two dimensional simulations of different types of stellar convection were performed using the VULCAN code. Two sets of simulations will be addressed here: (i) Convection in a red giant envelope - the mixing length parameter for a 1.2 Msun star with luminosity of 200 Lsun, was calibrated using different initial models. A consistent value of 1.4 was found after tests of spatial resolution and subgrid scale mixing terms. (ii) Convective oxygen shell burning - simulations of a period of 1200 seconds in a 20 Msun star pre-supernova evolution yield a new quasi steady state that is significantly different than the original one dimensional model: overshoot zones beyond the boundaries and considerable mixing.
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