Effects of rotation and surface forcing on deep stellar convection zones

Autor:	Käpylä, Petri J.
Rok vydání:	2023
Předmět:	Astrophysics - Solar and Stellar Astrophysics Physics - Fluid Dynamics
Druh dokumentu:	Working Paper
Popis:	The canonical undestanding of stellar convection has recently been put under doubt due to helioseismic results and global 3D convection simulations. This "convective conundrum" is manifested by much higher velocity amplitudes in simulations at large scales in comparison to helioseismic results, and the difficulty in reproducing the solar differential rotation and dynamo with global 3D simulations. Here some aspects of this conundrum are discussed from the viewpoint of hydrodynamic Cartesian 3D simulations targeted at testing the rotational influence and surface forcing on deep convection. More specifically, the dominant scale of convection and the depths of the convection zone and the weakly subadiabatic -- yet convecting -- Deardorff zone are discussed in detail. Comment: 10 pages, 4 figures, to appear in IAU Symposium 365 proceedings (A. Getling & L. Kitchatinov, eds)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2311.09082 Zobrazit plný text záznamu View this record from Arxiv