Multi-scale reconstruction of turbulent rotating flows with proper orthogonal decomposition and generative adversarial networks

T Li, M Buzzicotti, L Biferale, F Bonaccorso… - Journal of Fluid …, 2023 - cambridge.org
Data reconstruction of rotating turbulent snapshots is investigated utilizing data-driven tools.
This problem is crucial for numerous geophysical applications and fundamental aspects …

Critical transition in fast-rotating turbulence within highly elongated domains

A van Kan, A Alexakis - Journal of Fluid Mechanics, 2020 - cambridge.org
We study rapidly rotating turbulent flows in a highly elongated domain using an asymptotic
expansion at simultaneously low Rossby number, a transition is observed from a state …

On the thermal equilibrium state of large-scale flows

A Alexakis, ME Brachet - Journal of Fluid Mechanics, 2019 - cambridge.org
On the thermal equilibrium state of large-scale flows Page 1 J. Fluid Mech. (2019), vol. 872, pp.
594–625. c Cambridge University Press 2019 doi:10.1017/jfm.2019.394 594 On the thermal …

On Helmholtz–Hodge decomposition of inertia on a discrete local frame of reference

JP Caltagirone - Physics of Fluids, 2020 - pubs.aip.org
The notion of inertial reference frame is abandoned and replaced by a local reference frame
on which the fundamental law of mechanics is expressed. The distant interactions of the …

Inferring turbulent environments via machine learning

M Buzzicotti, F Bonaccorso - The European Physical Journal E, 2022 - Springer
The problem of classifying turbulent environments from partial observation is key for some
theoretical and applied fields, from engineering to earth observation and astrophysics, eg, to …

Phase transitions and flux-loop metastable states in rotating turbulence

P Clark Di Leoni, A Alexakis, L Biferale, M Buzzicotti - Physical Review Fluids, 2020 - APS
By using direct numerical simulations of up to a resolution of 512× 512× 32 768 grid points
we discover the existence of a metastable out-of-equilibrium state in rotating turbulence. We …

Anisotropic energy transfers in rapidly rotating turbulence

MK Sharma, MK Verma, S Chakraborty - Physics of Fluids, 2019 - pubs.aip.org
We perform direct numerical simulations and analyze the ring-to-ring energy transfer in the
three-dimensional hydrodynamic turbulence rendered anisotropic by rapid rotation. The …

Supply mechanisms of the geostrophic mode in rotating turbulence: interactions with self, waves and eddies

H Lam, A Delache, FS Godeferd - Journal of Fluid Mechanics, 2023 - cambridge.org
Direct numerical simulations are performed in rotating turbulence for different regimes at
various Rossby and inertial Reynolds numbers (. We propose a scale-by-scale analysis of …

Transfers of energy and helicity in helical rotating turbulence

R Hu, X Li, C Yu - Journal of Fluid Mechanics, 2022 - cambridge.org
Helical rotating turbulence is a chiral and anisotropic flow. The energy and helicity transfers
of helical rotating turbulence are studied in this paper. First, we discuss the antisymmetry …

Direct measurement of energy transfer in strongly driven rotating turbulence

O Shaltiel, A Salhov, O Gat, E Sharon - Physical Review Letters, 2024 - APS
A short, abrupt increase in energy injection rate into steady strongly driven rotating turbulent
flow is used as a probe for energy transfer in the system. The injected excessive energy is …