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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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