Laboratoire de Mécanique des Fluides et d'Acoustique - UMR 5509

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Accueil > Équipes > Turbulence & Instabilités > Publications T&I > Publications T&I 2019

Publications T&I 2019

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The size and lifetime of organised eddies in a non-solid-body rotating turbulence experiment

Article dans Eur. J. Mech. B-Fluids (2019)

The size and lifetime of organised eddies in a non-solid-body rotating turbulence experiment

Lian Gan & Andrea Maffioli

This paper follows our previous study of forced non-solid-body rotating turbulence and summarises results on the eddy size and lifetime in the same flow. The experiment is conducted in a (...)

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Bifurcations from steady to quasi-periodic flows in a laterally heated cavity filled with low Prandtl number fluids

Article dans J. Fluid Mech. (2019)

Bifurcations from steady to quasi-periodic flows in a laterally heated cavity filled with low Prandtl number fluids

Abdessamed Medelfef, Daniel Henry, Ahcene Bouabdallah & Slim Kaddeche

This study deals with the transition toward quasi-periodicity of buoyant convection generated by a horizontal temperature gradient in a three-dimensional parallelepipedic cavity with dimensions (...)

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Instabilities in viscosity-stratified two-fluid channel flow over an anisotropic-inhomogeneous porous bottom

Article dans Phys. Fluids (2019)

Instabilities in viscosity-stratified two-fluid channel flow over an anisotropic-inhomogeneous porous bottom

Geetanjali Chattopadhyay, Usha Ranganathan & Séverine Millet

A linear stability analysis of a pressure driven, incompressible, fully developed laminar Poiseuille flow of immiscible two-fluids of stratified viscosity and density in a horizontal channel (...)

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Turbulence-driven ion beams in the magnetospheric Kelvin-Helmholtz instability

Article dans Phys. Rev. letters (2019)

Turbulence-driven ion beams in the magnetospheric Kelvin-Helmholtz instability

Luca Sorriso-Valvo, Filomena Catapano, Alessandro Retinò, Olivier Le Contel, Denise Perrone, Owen W. Roberts, Jesse T. Coburn, Vincenzo Panebianco, Francesco Valentini, Silvia Perri, Antonella Greco, Francesco Malara, Vincenzo Carbone, Pierluigi Veltri, Oreste Pezzi, Federico Fraternale, Francesca Di Mare, Raffaele Marino, Barbara Giles, Thomas E. Moore, Christopher T. Russell, Roy B. Torbert, Jim L. Burch & Yuri 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 (...)

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Restricted nonlinear model for high- and low-drag events in plane channel flow

Article dans J. Fluid Mech. (2019)

Restricted nonlinear model for high- and low-drag events in plane channel flow

Frédéric Alizard & Damien Biau

A restricted nonlinear (RNL) model, obtained by partitioning the state variables into streamwise-averaged quantities and superimposed perturbations, is used in order to track the exact coherent (...)

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 Investigation of the dynamics in separated turbulent flow

Article dans Eur. J. Mech. B-Fluids (2019)

Investigation of the dynamics in separated turbulent flow

Fawzi Fadla, Frédéric Alizard, Laurent Keirsbulck, Jean-Christophe Robinet, Jean-PhilippeLaval, Jean-Marc Foucaut, Camila Chovet & Marc Lippert

Dynamical behavior of the turbulent channel flow separation induced by a wall-mounted two-dimensional bump is studied, with an emphasis on unsteadiness characteristics of vortical motions (...)

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Helicity dynamics, inverse, and bidirectional cascades in fluid and magnetohydrodynamic turbulence : a brief review

Article dans Earth Space Sci. (2019)

Helicity dynamics, inverse, and bidirectional cascades in fluid and magnetohydrodynamic turbulence : a brief review

A. Pouquet, D. Rosenberg, J.E. Stawarz & R. Marino

We briefly review helicity dynamics, inverse and bidirectional cascades in fluid and magnetohydrodynamic (MHD) turbulence, with an emphasis on the latter. The energy of a turbulent system, an (...)

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Multiscale analysis of the structure of homogeneous rotating turbulence

Article dans Phys. Rev. Fluids (2019)

Multiscale analysis of the structure of homogeneous rotating turbulence

Aurore Naso

The structure of homogeneous rotating turbulence at moderate Reynolds number is investigated by analyzing the instantaneous statistics of the scale-dependent velocity gradient tensor perceived by (...)

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Nonlinear spectral model for rotating sheared turbulence

Article dans J. Fluid Mech. (2019)

Nonlinear spectral model for rotating sheared turbulence

Ying Zhu, Claude Cambon, Fabien. Godeferd & Aziz Salhi

We propose a statistical model for homogeneous turbulence undergoing distortions, which improves and extends the MCS model by Mons, Cambon & Sagaut (2016). The spectral tensor of two-point (...)

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A 2D½ model for natural convection and solidification in a narrow enclosure

Article dans Int. J. Therm. Sci. (2019)

A 2D½ model for natural convection and solidification in a narrow enclosure

I. Hamzaoui, S. Millet, V. Botton, A. Benzaoui, D. Henry, L. Hachani, R. Boussaa, K. Zaidat & Y. Fautrelle

Efficient numerical models are derived for problems of natural convection and material solidification in a horizontal differentially heated slender cavity. These 2D$^1/2$ models are obtained by (...)

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