Synchronization to big data: Nudging the Navier-Stokes equations for data assimilation of turbulent flows
Nudging is an important data assimilation technique where partial field measurements are
used to control the evolution of a dynamical system and/or to reconstruct the entire phase …
used to control the evolution of a dynamical system and/or to reconstruct the entire phase …
Quantitative experimental observation of weak inertial-wave turbulence
We report the quantitative experimental observation of the weak inertial-wave turbulence
regime of rotating turbulence. We produce a statistically steady homogeneous turbulent flow …
regime of rotating turbulence. We produce a statistically steady homogeneous turbulent flow …
Coherent structures and extreme events in rotating multiphase turbulent flows
L Biferale, F Bonaccorso, IM Mazzitelli… - Physical Review X, 2016 - APS
By using direct numerical simulations (DNS) at unprecedented resolution, we study
turbulence under rotation in the presence of simultaneous direct and inverse cascades. The …
turbulence under rotation in the presence of simultaneous direct and inverse cascades. The …
Inertial wave turbulence driven by elliptical instability
The combination of elliptical deformation of streamlines and vorticity can lead to the
destabilization of any rotating flow via the elliptical instability. Such a mechanism has been …
destabilization of any rotating flow via the elliptical instability. Such a mechanism has been …
Energy transfer in turbulence under rotation
It is known that rapidly rotating turbulent flows are characterized by the emergence of
simultaneous upscale and downscale energy transfer. Indeed, both numerics and …
simultaneous upscale and downscale energy transfer. Indeed, both numerics and …
Kinetic turbulence in astrophysical plasmas: waves and/or structures?
The question of the relative importance of coherent structures and waves has for a long time
attracted a great deal of interest in astrophysical plasma turbulence research, with a more …
attracted a great deal of interest in astrophysical plasma turbulence research, with a more …
Experimental study of the nonlinear saturation of the elliptical instability: inertial wave turbulence versus geostrophic turbulence
In this paper, we present an experimental investigation of the turbulent saturation of the flow
driven by the parametric resonance of inertial waves in a rotating fluid. In our set-up, a half …
driven by the parametric resonance of inertial waves in a rotating fluid. In our set-up, a half …
Disentangling inertial waves from eddy turbulence in a forced rotating-turbulence experiment
We present a spatiotemporal analysis of a statistically stationary rotating-turbulence
experiment, aiming to extract a signature of inertial waves and to determine the scales and …
experiment, aiming to extract a signature of inertial waves and to determine the scales and …
Dual constant-flux energy cascades to both large scales and small scales
In this paper, we present an overview of concepts and data concerning inverse cascades of
excitation towards scales larger than the forcing scale in a variety of contexts, from two …
excitation towards scales larger than the forcing scale in a variety of contexts, from two …
Quantitative estimation of effective viscosity in quantum turbulence
We study freely decaying quantum turbulence by performing high-resolution numerical
simulations of the Gross-Pitaevskii equation (GPE) in the Taylor-Green geometry. We use …
simulations of the Gross-Pitaevskii equation (GPE) in the Taylor-Green geometry. We use …