Turbulence, waves and instabilities in conducting fluids are investigated using high resolution numerical simulations and theoretical analysis. A particular emphasis is put on the anisotropic character of the flows induced by the presence of a magnetic field.
Staff involved : C. Cambon, F. Godeferd & R. Marino.
Associated publications :
 Article dans Atmosphere (2020) Nonlinear Effects on the Precessional Instability in Magnetized TurbulenceAbdelaziz Salhi, Amor Khlifi & Claude Cambon
By means of direct numerical simulations (DNS), we study the impact of an imposed uniform magnetic field on precessing magnetohydrodynamic homogeneous turbulence with a unit magnetic Prandtl (...) | |
 Article dans Phys. Rev. E (2019) Sudden diffusion of turbulent mixing layers in weakly coupled plasmas under compressionGiovanni Viciconte, Benoît-Joseph Gréa, Fabien S. Godeferd, Philippe Arnault & Jean Clérouin
The rapid growth of viscosity driven by temperature increase in turbulent plasmas under compression induces a sudden dissipation of kinetic energy, eventually leading to the relaminarization of (...) |
 Article dans Astronomy & Astrophysics (2019) The low-frequency break observed in the slow solar wind magnetic spectraRoberto Bruno, Daniele Telloni, Luca Sorriso-Valvo, Raffaele Marino, Rossana De Marco, Raffaela D’Amicis
Fluctuations of solar wind magnetic field and plasma parameters exhibit a typical turbulence power spectrum with a spectral index ranging between ∼ 5/3 and ∼ 3/2. In particular, at 1 AU, the (...) |
 Article dans Journal of Turbulence (2019) Kinetic-magnetic energy exchanges in rotating magnetohydrodynamic turbulenceFatma Salma Baklouti, Amor Khlifi, Abdelaziz Salhi, Fabien Godeferd, Claude Cambon, Thierry Lehner
We use direct numerical simulations to study the dynamics of incompressible homogeneous turbulence subjected to a uniform magnetic field B in a rotating frame with rotation vector (...) |
 Article dans Phys. Rev. letters (2019) Turbulence-driven ion beams in the magnetospheric Kelvin-Helmholtz instabilityL. Sorriso-Valvo, F. Catapano, A. Retinò, O. Le Contel, D. Perrone, O. W. Roberts, J. T. Coburn, V. Panebianco, F. Valentini, S. Perri, A. Greco, F. Malara, V. Carbone, P. Veltri, O. Pezzi, F. Fraternale, F. Di Mare, R. Marino, B. Giles, T. E. Moore, C. T. Russell, R. B. Torbert, J. L. Burch & Y. V. Khotyaintsev
The description of the local turbulent energy transfer and the high-resolution ion distributions measured by the Magnetospheric Multiscale mission together provide a formidable tool to explore (...) |
 Article dans Solar Physics (2018) On the Statistical Properties of Turbulent Energy Transfer Rate in the Inner HeliosphereLuca Sorriso-Valvo, Francesco Carbone, Silvia Perri, Antonella Greco, Raffaele Marino & Roberto Bruno
The transfer of energy from large to small scales in solar wind turbulence is an important ingredient of the long-standing question of the mechanism of the interplanetary plasma heating. Previous (...) |
 Article dans Phys. Rev. E (2018) Self-similar regimes of turbulence in weakly coupled plasmas under compressionGiovanni Viciconte, Benoît-Joseph Gréa, & Fabien S. Godeferd
Plasmas under strong compression, as existing in inertial confinement fusion capsules, experience a tremendous growth of their viscosity coefficient due to the temperature increase. It is known (...) |
 Article dans Phys. Rev. E (2017) Energy partition, scale by scale, in magnetic Archimedes Coriolis weak wave turbulenceA. Salhi, F. S. Baklouti, F. Godeferd, T. Lehner, and C. Cambon
Magnetic Archimedes Coriolis (MAC) waves are omnipresent in several geophysical and astrophysical flows such as the solar tachocline. In the present study, we use linear spectral theory (LST) and (...) |
 Article dans Space sci. rev. (2015) Large-Eddy Simulations of Magnetohydrodynamic Turbulence in Heliophysics and AstrophysicsMark Miesch, William Matthaeus, Axel Brandenburg, Arakel Petrosyan, Annick Pouquet, Claude Cambon, Frank Jenko, Dmitri Uzdensky, James Stone, Steve Tobias, Juri Toomre & Marco Velli
We live in an age in which high-performance computing is transforming the way we do science. Previously intractable problems are now becoming accessible by means of increasingly realistic (...) |
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