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

LMFA - UMR 5509
Laboratoire de Mécanique des Fluides et d’Acoustique
Lyon
France


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

Publications T&I 2019

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The mechanism of long-wave instability in a shear-thinning film flow on a porous substrate

Article dans Acta Mechanica (2019)

The mechanism of long-wave instability in a shear-thinning film flow on a porous substrate

Séverine Millet, Ranganathan Usha, Valéry Botton & François Rousset

A linear stability analysis of a thin shear-thinning film with a deformable top surface flowing down an inclined porous substrate modelled as a smooth substrate with velocity slip at the wall is (...)

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Power fluctuations in turbulence

Article dans Phys. Rev. letters (2019)

Power fluctuations in turbulence

Wouter J. T. Bos & Rémi Zamansky

To generate or maintain a turbulent flow, one needs to introduce kinetic energy. This energy injection necessarily fluctuates and these power fluctuations act on all turbulent excited length (...)

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Transition to chaos in an acoustically driven cavity flow

Article dans Phys. Rev. Fluids (2019)

Transition to chaos in an acoustically driven cavity flow

Gaby Launay, Tristan Cambonie, Daniel Henry, Alban Pothérat & Valéry Botton

We consider the unsteady regimes of an acoustically driven jet that forces a recirculating flow through successive reflections on the walls of a square cavity. The specific questions addressed (...)

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Harmonic to subharmonic transition of the Faraday instability in miscible fluids

Article dans Phys. Rev. Fluids (2019)

Harmonic to subharmonic transition of the Faraday instability in miscible fluids

Antoine Briard, Benoît-Joseph Gréa & Louis Gostiaux

When a stable stratification between two miscible fluids is excited by a vertical and periodic forcing, a turbulent mixing zone can develop, triggered by the Faraday instability. The mixing zone (...)

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Theoretical and numerical study on high frequency vibrational convection : Influence of the vibration direction on the flow structure

Article dans Phys. Fluids (2019)

Theoretical and numerical study on high frequency vibrational convection : Influence of the vibration direction on the flow structure

Samia Bouarab, Faiza Mokhtari, Slim Kaddeche, Daniel Henry, Valéry Botton & Abdessamed Medelfef

Thermal convection induced simultaneously by horizontal temperature gradient and vibration in a rectangular cavity filled with molten silicon is investigated numerically and theoretically. The (...)

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Passive scalar mixing in modulated turbulence

Article dans Fluid Dyn. Res. (2019)

Passive scalar mixing in modulated turbulence

Yuyao Yang, Robert Chahine, Robert Rubinstein & Wouter JT Bos

We investigate the mixing of a passive scalar in an isotropic turbulent flow in the presence of a time-periodic forcing. The results corroborate recent analytical predictions on the frequency (...)

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Asymmetry of vertical buoyancy gradient in stratified turbulence

Article dans J. Fluid Mech. (2019)

Asymmetry of vertical buoyancy gradient in stratified turbulence

Andrea Maffioli

We consider the asymmetry of the buoyancy field in the vertical direction in stratified turbulence. While this asymmetry is known, its causes are not well understood, and it has not been (...)

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Particle transport induced by internal wave beam streaming in lateral boundary layers

Article dans J. Fluid. Mech. (2019)

Particle transport induced by internal wave beam streaming in lateral boundary layers

E. Horne, F. Beckebanze, D. Micard, P. Odier, L. R. M. Maas & S. Joubaud

Quantifying the physical mechanisms responsible for the transport of sediments, nutrients and pollutants in the abyssal sea is a long-standing problem, with internal waves regularly invoked as (...)

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Refinement of the logarithmic law of the wall

Article dans Phys. Rev. Fluids (2019)

Refinement of the logarithmic law of the wall

Faouzi Laadhari

Available direct numerical simulation of turbulent channel flow at moderately high Reynolds numbers data show that the logarithmic diagnostic function is a linearly decreasing function of the (...)

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Kinetic-magnetic energy exchanges in rotating magnetohydrodynamic turbulence

Article dans Journal of Turbulence (2019)

Kinetic-magnetic energy exchanges in rotating magnetohydrodynamic turbulence

Fatma 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 (...)

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