Cascades and transitions in turbulent flows

A Alexakis, L Biferale - Physics Reports, 2018 - Elsevier
Turbulent flows are characterized by the non-linear cascades of energy and other inviscid
invariants across a huge range of scales, from where they are injected to where they are …

Radiative heating achieves the ultimate regime of thermal convection

S Lepot, S Aumaître, B Gallet - Proceedings of the National …, 2018 - National Acad Sciences
The absorption of light or radiation drives turbulent convection inside stars, supernovae,
frozen lakes, and Earth's mantle. In these contexts, the goal of laboratory and numerical …

Direct and inverse energy cascades in a forced rotating turbulence experiment

A Campagne, B Gallet, F Moisy, PP Cortet - Physics of Fluids, 2014 - pubs.aip.org
We present experimental evidence for a double cascade of kinetic energy in a statistically
stationary rotating turbulence experiment. Turbulence is generated by a set of vertical flaps …

Condensates in rotating turbulent flows

K Seshasayanan, A Alexakis - Journal of Fluid Mechanics, 2018 - cambridge.org
Condensates in rotating turbulent flows Page 1 J. Fluid Mech. (2018), vol. 841, pp. 434–462. c
Cambridge University Press 2018 doi:10.1017/jfm.2018.106 434 Condensates in rotating …

Subcritical turbulent condensate in rapidly rotating Rayleigh–Bénard convection

B Favier, C Guervilly, E Knobloch - Journal of Fluid Mechanics, 2019 - cambridge.org
The possibility of subcritical behaviour in the geostrophic turbulence regime of rapidly
rotating thermally driven convection is explored. In this regime a non-local inverse energy …

Spatiotemporal dynamics in two-dimensional Kolmogorov flow over large domains

D Lucas, R Kerswell - Journal of fluid mechanics, 2014 - cambridge.org
Kolmogorov flow in two dimensions–the two-dimensional (2D) Navier–Stokes equations
with a sinusoidal body force–is considered over extended periodic domains to reveal …

From a vortex gas to a vortex crystal in instability-driven two-dimensional turbulence

A van Kan, B Favier, K Julien… - Journal of Fluid …, 2024 - cambridge.org
We study structure formation in two-dimensional turbulence driven by an external force,
interpolating between linear instability forcing and random stirring, subject to nonlinear …

Gyre turbulence: Anomalous dissipation in a two-dimensional ocean model

L Miller, B Deremble, A Venaille - Physical Review Fluids, 2024 - APS
The exploration of a two-dimensional wind-driven ocean model with no-slip boundaries
reveals the existence of a turbulent asymptotic regime where energy dissipation becomes …

Exact coherent structures in fully developed two-dimensional turbulence

D Zhigunov, RO Grigoriev - Journal of Fluid Mechanics, 2023 - cambridge.org
This paper reports several new classes of unstable recurrent solutions of the two-
dimensional Euler equation on a square domain with periodic boundary conditions. These …

Two-dimensional turbulence above topography: condensation transition and selection of minimum enstrophy solutions

B Gallet - Journal of Fluid Mechanics, 2024 - cambridge.org
We consider two-dimensional flows above topography, revisiting the selective decay (or
minimum enstrophy) hypothesis of Bretherton and Haidvogel. We derive a 'condensed …