Rayleigh and Prandtl number scaling in the bulk of Rayleigh-Benard turbulence [PDF]
Physics of Fluids, 2004 The Rayleigh (Ra) and Prandtl (Pr) number scaling of the Nusselt number Nu, the Reynolds number Re, the temperature fluctuations, and the kinetic and thermal dissipation rates is studied for (numerical) homogeneous Rayleigh-Benard turbulence, i.e ...
Calzavarini, Enrico +3 more
core +27 more sources
High Rayleigh number convection with double diffusive fingers [PDF]
, 2010 An electrodeposition cell is used to sustain a destabilizing concentration difference of copper ions in aqueous solution between the top and bottom boundaries of the cell.
Elias Hage, A. Tilgner
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Natural convection with mixed insulating and conducting boundary conditions: low and high Rayleigh numbers regimes [PDF]
Journal of Fluid Mechanics, 2014 We investigate the stability and dynamics of natural convection in two dimensions, subject to inhomogeneous boundary conditions. In particular, we consider a Rayleigh-B\`enard (RB) cell, where the horizontal top boundary contains a periodic sequence of ...
Biferale, L. +3 more
core +7 more sources
Flow states in two-dimensional Rayleigh-Bénard convection as a function of aspect-ratio and Rayleigh number [PDF]
, 2012 In this numerical study on two-dimensional Rayleigh-Benard convection we consider 107 ⩽ Ra ⩽ 1012 in aspect-ratio 0.23 ⩽ Γ ⩽ 13 samples. We focus on several cases.
Erwin P. van der Poel +3 more
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THE SPECTRAL AMPLITUDE OF STELLAR CONVECTION AND ITS SCALING IN THE HIGH-RAYLEIGH-NUMBER REGIME [PDF]
, 2016 Convection plays a central role in the dynamics of any stellar interior, and yet its operation remains largely hidden from direct observation. As a result, much of our understanding concerning stellar convection necessarily derives from theoretical and ...
Nicholas A. Featherstone +1 more
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Finite Element Simulation of Nonlinear Convective Heat and Mass Transfer in a Micropolar Fluid-Filled Enclosure with Rayleigh Number Effects [PDF]
, 2016 R. Bhargava +4 more
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Small scale quasigeostrophic convective turbulence at large Rayleigh number [PDF]
Physical Review Fluids, 2023 A numerical investigation of an asymptotically reduced model for quasi-geostrophic Rayleigh-B\'enard convection is conducted in which the depth-averaged flows are numerically suppressed by modifying the governing equations.
Tobias G. Oliver +3 more
semanticscholar +1 more source
Natural Convection and Radiation in Enclosures with Semi-transparent Medium: Conjugate CFD Analysis [PDF]
Journal of Applied Fluid Mechanics, 2022 Radiation heat transfer is often ignored in several studies as it has few significant effects in some cases. However, when using a participating fluid, where the molecules interact with the radiative spectrum, these effects cannot be disregarded.
E. G. Barbosa +3 more
doaj +1 more source
Regime transitions in thermally driven high-Rayleigh number vertical convection [PDF]
Journal of Fluid Mechanics, 2020 Thermally driven vertical convection (VC) – the flow in a box heated on one side and cooled on the other side, is investigated using direct numerical simulations with Rayleigh numbers over the wide range of $10^7\le Ra\le 10^{14}$ and a fixed Prandtl ...
Qi Wang +4 more
semanticscholar +1 more source
High-Rayleigh-number convection in porous–fluid layers [PDF]
Journal of Fluid Mechanics, 2020 We present a numerical study of convection in a horizontal layer comprising a fluid-saturated porous bed overlain by an unconfined fluid layer. Convection is driven by a vertical, destabilising temperature difference applied across the whole system, as ...
T. Le Reun, D. Hewitt
semanticscholar +1 more source