Ultimate Rayleigh-Bénard turbulence

D Lohse, O Shishkina - Reviews of modern physics, 2024 - APS
Thermally driven turbulent flows are omnipresent in nature and technology. A good
understanding of the physical principles governing such flows is key for numerous problems …

New perspectives in turbulent Rayleigh-Bénard convection

F Chillà, J Schumacher - The European Physical Journal E, 2012 - Springer
Recent experimental, numerical and theoretical advances in turbulent Rayleigh-Bénard
convection are presented. Particular emphasis is given to the physics and structure of the …

Colloquium: Unusual dynamics of convection in the Sun

J Schumacher, KR Sreenivasan - Reviews of Modern Physics, 2020 - APS
The Sun is our nearest star; it is also the most important star that determines life on Earth. A
large variety of phenomena observed on the Sun's surface, with potential impact on Earth, is …

[HTML][HTML] A pencil distributed finite difference code for strongly turbulent wall-bounded flows

EP Van Der Poel, R Ostilla-Mónico, J Donners… - Computers & …, 2015 - Elsevier
We present a numerical scheme geared for high performance computation of wall-bounded
turbulent flows. The number of all-to-all communications is decreased to only six instances …

Transition to the ultimate state of turbulent Rayleigh-Bénard convection

X He, D Funfschilling, H Nobach, E Bodenschatz… - Physical review …, 2012 - APS
Measurements of the Nusselt number Nu and of a Reynolds number Re eff for Rayleigh-
Bénard convection (RBC) over the Rayleigh-number range 10 12≲ Ra≲ 10 15 and for …

[图书][B] Physics of buoyant flows: from instabilities to turbulence

MK Verma - 2018 - World Scientific
Hydrodynamic flows exhibit turbulent behaviour which is not well understood till date. When
a fluid is in a gravitational field, the flow becomes even more complex due to the gravity …

Comparison between two-and three-dimensional Rayleigh–Bénard convection

EP Van Der Poel, RJAM Stevens… - Journal of fluid …, 2013 - cambridge.org
Two-dimensional and three-dimensional Rayleigh–Bénard convection is compared using
results from direct numerical simulations and previous experiments. The phase diagrams for …

The unifying theory of scaling in thermal convection: the updated prefactors

RJAM Stevens, EP van der Poel… - Journal of fluid …, 2013 - cambridge.org
The unifying theory of scaling in thermal convection (Grossmann & Lohse, J. Fluid. Mech.,
vol. 407, 2000, pp. 27–56; henceforth the GL theory) suggests that there are no pure power …

Roughness as a route to the ultimate regime of thermal convection

S Toppaladoddi, S Succi, JS Wettlaufer - Physical review letters, 2017 - APS
We use highly resolved numerical simulations to study turbulent Rayleigh-Bénard
convection in a cell with sinusoidally rough upper and lower surfaces in two dimensions for …

Statistics of kinetic and thermal energy dissipation rates in two-dimensional turbulent Rayleigh–Bénard convection

Y Zhang, Q Zhou, C Sun - Journal of Fluid Mechanics, 2017 - cambridge.org
We investigate the statistical properties of the kinetic is found to be plume dominated.
Moreover, the boundary-layer/plume contributions scale as those predicted by the GL …