Effect of the radiative background flux in convection

Details Effect of the radiative background flux in convection Effect of the radiative background flux in convection

2005-08-18

arxiv.org/abs/astro-ph/0508404v1

Astron.Nachr. 326 (2005) 681-692

Astronomy and Astrophysics

Astrophysics

12 pages, 24 figures, accepted by Astron. Nachr

Scientific paper

10.1002/asna.200510411

Numerical simulations of turbulent stratified convection are used to study models with approximately the same convective flux, but different radiative fluxes. As the radiative flux is decreased, for constant convective flux: the entropy jump at the top of the convection zone becomes steeper, the temperature fluctuations increase and the velocity fluctuations decrease in magnitude, and the distance that low entropy fluid from the surface can penetrate increases. Velocity and temperature fluctuations follow mixing length scaling laws.

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