Frictional boundary layer effect on vortex condensation in rotating turbulent convection
Fluid Dynamics
2020-11-25 v1
Abstract
We perform direct numerical simulations of rotating Rayleigh--B\'enard convection of fluids with low () and high () Prandtl numbers in a horizontally periodic layer with no-slip top and bottom boundaries. At both Prandtl numbers, we demonstrate the presence of an upscale transfer of kinetic energy that leads to the development of domain-filling vortical structures. Sufficiently strong buoyant forcing and rotation foster the quasi-two-dimensional turbulent state of the flow, despite the formation of plume-like vertical disturbances promoted by so-called Ekman pumping from the viscous boundary layer.
Keywords
Cite
@article{arxiv.2001.11889,
title = {Frictional boundary layer effect on vortex condensation in rotating turbulent convection},
author = {Andrés J. Aguirre Guzmán and Matteo Madonia and Jonathan S. Cheng and Rodolfo Ostilla-Mónico and Herman J. H. Clercx and Rudie P. J. Kunnen},
journal= {arXiv preprint arXiv:2001.11889},
year = {2020}
}
Comments
12 pages, 4 figures