# Boundary zonal flows in rapidly rotating turbulent thermal convection

@article{Zhang2021BoundaryZF,
title={Boundary zonal flows in rapidly rotating turbulent thermal convection},
author={Xuan Zhang and R. Ecke and O. Shishkina},
journal={Journal of Fluid Mechanics},
year={2021},
volume={915}
}
• Published 2021
• Physics
• Journal of Fluid Mechanics
Abstract Recently, in Zhang et al. (Phys. Rev. Lett., vol. 124, 2020, 084505), it was found that, in rapidly rotating turbulent Rayleigh–Bénard convection in slender cylindrical containers (with diameter-to-height aspect ratio $\varGamma =1/2$) filled with a small-Prandtl-number fluid (${Pr}\approx 0.8$), the large-scale circulation is suppressed and a boundary zonal flow (BZF) develops near the sidewall, characterized by a bimodal probability density function of the temperature, cyclonic fluid… Expand
1 Citations
Rotating turbulent thermal convection at very large Rayleigh numbers
• Journal of Fluid Mechanics
• 2021
Abstract We report on turbulent thermal convection experiments in a rotating cylinder with a diameter ($D$) to height ($H$) aspect ratio of $\varGamma =D/H=0.5$. Using nitrogen and pressurisedExpand

#### References

SHOWING 1-10 OF 86 REFERENCES
Rotating turbulent thermal convection at very large Rayleigh numbers
• Journal of Fluid Mechanics
• 2021
Abstract We report on turbulent thermal convection experiments in a rotating cylinder with a diameter ($D$) to height ($H$) aspect ratio of $\varGamma =D/H=0.5$. Using nitrogen and pressurisedExpand
The large-scale flow structure in turbulent rotating Rayleigh–Bénard convection
• Physics
• Journal of Fluid Mechanics
• 2011
Abstract We report on the influence of rotation about a vertical axis on the large-scale circulation (LSC) of turbulent Rayleigh–Bénard convection in a cylindrical vessel with aspect ratio $\GammaExpand Prograde, retrograde, and oscillatory modes in rotating Rayleigh–Bénard convection • Physics • Journal of Fluid Mechanics • 2017 Rotating Rayleigh–Bénard convection is typified by a variety of regimes with very distinct flow morphologies that originate from several instability mechanisms. Here we present results from directExpand Rotating thermal convection in liquid gallium: multi-modal flow, absent steady columns • Materials Science • Journal of Fluid Mechanics • 2018 Earth’s magnetic field is generated by convective motions in its liquid metal core. In this fluid, the heat diffuses significantly more than momentum, and thus the Prandtl number$Pr$is well belowExpand Heat transport and the large-scale circulation in rotating turbulent Rayleigh–Bénard convection • Physics • Journal of Fluid Mechanics • 2010 Measurements of the Nusselt number Nu and of properties of the large-scale circulation (LSC) for turbulent Rayleigh–Bénard convection are presented in the presence of rotation about a vertical axisExpand Rotating Rayleigh–Bénard convection: asymmetric modes and vortex states • Physics • 1993 We present optical shadowgraph flow visualization and heat transport measurements of Rayleigh–Benard convection with rotation about a vertical axis. The fluid, water with Prandtl number 6.4, isExpand Toroidal and poloidal energy in rotating Rayleigh–Bénard convection • Physics • Journal of Fluid Mechanics • 2014 Abstract We consider rotating Rayleigh–Bénard convection of a fluid with a Prandtl number of$\mathit{Pr}=0.8$in a cylindrical cell with an aspect ratio${\it\Gamma}=1/2\$ . Direct numericalExpand
Rapidly rotating turbulent Rayleigh-Bénard convection
• Physics
• 1996
Turbulent Boussinesq convection under the influence of rapid rotation (i.e. with comparable characteristic rotation and convection timescales) is studied. The transition to turbulence proceedsExpand
The role of Stewartson and Ekman layers in turbulent rotating Rayleigh–Bénard convection
• Physics
• Journal of Fluid Mechanics
• 2011
Abstract When the classical Rayleigh–Bénard (RB) system is rotated about its vertical axis roughly three regimes can be identified. In regime I (weak rotation) the large-scale circulation (LSC) isExpand
Heat-transport enhancement in rotating turbulent Rayleigh-Bénard convection.
• Physics, Medicine
• Physical review. E
• 2016
New Nusselt-number (Nu) measurements for slowly rotating turbulent thermal convection in cylindrical samples with aspect ratio Γ=1.00 are presented and no dependence of 1/Ro_{c} on Ra, which is expected to lead to reduced vertical fluid transport in the bulk region, is revealed. Expand