A review on Rayleigh-Bénard convection influenced by the complicating factors

JJ Song, PX Li, L Chen, CH Li, BW Li… - … Communications in Heat …, 2023 - Elsevier
Thermal convection is one of the basic modes (thermal convection, thermal conduction,
thermal radiation) of heat transfer, and it belongs to the thermo-fluid mechanics. With the …

Heat transfer enhancement in vertical convection under spatially harmonic temperature modulation

KL Chong, S Qiao, JZ Wu, BF Wang - … Journal of Heat and Mass Transfer, 2024 - Elsevier
In this study, we investigate the impact of spatial temperature modulation on vertical
convection (VC) and analyze how the efficiency of heat transfer varies with modulation …

Particle-resolved thermal lattice Boltzmann simulation using OpenACC on multi-GPUs

A Xu, BT Li - International Journal of Heat and Mass Transfer, 2024 - Elsevier
Abstract We utilize the Open Accelerator (OpenACC) approach for graphics processing unit
(GPU) accelerated particle-resolved thermal lattice Boltzmann (LB) simulation. We adopt the …

Wall-sheared thermal convection: heat transfer enhancement and turbulence relaminarization

A Xu, BR Xu, HD ** - Journal of Fluid Mechanics, 2023 - cambridge.org
We studied the flow organization and heat transfer properties in two-dimensional and three-
dimensional Rayleigh–Bénard cells that are imposed with different types of wall shear. The …

Suppression of flow reversals via manipulating corner rolls in plane Rayleigh–Bénard convection

CB Zhao, BF Wang, JZ Wu, KL Chong… - Journal of Fluid …, 2022 - cambridge.org
In this paper, we report that reversals of the large-scale circulation in two-dimensional
Rayleigh–Bénard (RB) convection can be suppressed by imposing sinusoidally distributed …

Enhanced heat transfer and reduced flow reversals in turbulent thermal convection with an obstructed centre

YZ Li, X Chen, HD ** - Journal of Fluid Mechanics, 2024 - cambridge.org
We report an experimental study about the effect of an obstructed centre on heat transport
and flow reversal by inserting an adiabatic cylinder at the centre of a quasi-two-dimensional …

Flow structures of turbulent Rayleigh–Bénard convection in annular cells with aspect ratio one and larger

X Zhu, Q Zhou - Acta Mechanica Sinica, 2021 - Springer
We present an experimental study of flow structures in turbulent Rayleigh–Bénard
convection in annular cells of aspect ratios Γ= 1, 2 and 4, and radius ratio⋍ 0.5. The …

Counter-flow orbiting of the vortex centre in turbulent thermal convection

YZ Li, X Chen, A Xu, HD ** - Journal of Fluid Mechanics, 2022 - cambridge.org
Counter-flow orbiting of the vortex centre in turbulent thermal convection Page 1 J. Fluid Mech.
(2022), vol. 935, A19, doi:10.1017/jfm.2022.11 Counter-flow orbiting of the vortex centre in …

Flow state transition induced by emergence of orbiting satellite eddies in two-dimensional turbulent Rayleigh–Bénard convection

ZY Gao, X Tao, SD Huang, Y Bao… - Journal of Fluid …, 2024 - cambridge.org
We report a numerical investigation of a previously noticed but less explored flow state
transition in two-dimensional turbulent Rayleigh–Bénard convection. The simulations are …

Large-scale circulation reversals explained by pendulum correspondence

NJ Moore, J Mac Huang - Journal of Fluid Mechanics, 2024 - cambridge.org
We introduce a low-order dynamical system to describe thermal convection in an annular
domain. The model derives systematically from a Fourier–Laurent truncation of the …