On the Dynamics of Overshooting Convection in Spherical Shells: Effect of Density Stratification and Rotation.

ABSTRACT: Overshooting of turbulent motions from convective regions into adjacent stably stratified zones plays a significant role in stellar interior dynamics, as this process may lead to mixing of chemical species and contribute to the transport of angular momentum and magnetic fields. We present a series of fully nonlinear, three-dimensional (3D) anelastic simulations of overshooting convection in a spherical shell that are focused on the dependence of the overshooting dynamics on the density stratification and the rotation, both key ingredients in stars that however have not been studied systematically together via global simulations. We demonstrate that the overshoot lengthscale is not simply a monotonic function of the density stratification in the convective region, but instead it depends on

SUBMITTER: Korre L 

PROVIDER: S-EPMC8886497 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature