# Fluid Mechanics and Acoustics Laboratory - UMR 5509

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

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## Publications T&I

La liste des publications de l’équipe peut être obtenue à partir de la base de publications du LMFA. Ci-dessous nos publications récentes en images. Retrouvez toutes nos publications du quinquennal en 2014, 2015, 2016, 2017, 2018 et 2019.

Article in 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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Article in Fluid Dyn. Res. (2019)

### Passive scalar mixing in modulated turbulence

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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Article in 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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Article in 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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Article in 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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Article in 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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Article in 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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Article in 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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Article in Comput. Fluids (2018)

### An improved multiscale Eulerian–Lagrangian method for simulation of atomization process

Davide Zuzio, Jean-Luc Estivalèzes & Bastien Di Pierro

The physics of atomization process involve many spatial scales, generating a wide variety of liquid inclusions of different sizes with large density and viscosity ratios between liquid and gas (...)

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Article in 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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Article in 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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Article in 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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