Fluid Mechanics and Acoustics Laboratory - UMR 5509

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


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Home > Teams > Turbulence & Instabilities > Publications T&I > Publications T&I 2019

Publications T&I 2019

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Control of light gas releases in ventilated tunnels

Article in J. Fluid. Mech. (2019)

Control of light gas releases in ventilated tunnels

Lei Jiang, Mathieu Creyssels, Gary R. Hunt & Pietro Salizzoni

The release of buoyant harmful gases within enclosed spaces, such as tunnels and corridors, may engender specific health, industrial and transportation risks. For safety, a simple ventilation (...)

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The effects of solid barriers and blocks on the propagation of smoke within longitudinally ventilated tunnels

Article in Building and Environment (2019)

The effects of solid barriers and blocks on the propagation of smoke within longitudinally ventilated tunnels

Fateh Chaabat, Mathieu Creyssels, A. Mos, J. Wingrave, Horacio Correia, Massimo Marro & Pietro Salizzoni

A series of experiments were conducted to investigate the effect of solid barriers, placed at the tunnel ceiling, on the behaviour of smoke in fire events within longitudinally ventilated (...)

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The low-frequency break observed in the slow solar wind magnetic spectra

Article in Astronomy & Astrophysics (2019)

The low-frequency break observed in the slow solar wind magnetic spectra

Roberto 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 (...)

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Observing mesospheric turbulence with specular meteor radars: A novel method for estimating second order statistics of wind velocity

Article in Earth and Space Science (2019)

Observing mesospheric turbulence with specular meteor radars: A novel method for estimating second order statistics of wind velocity

J. Vierinen, J. L. Chau, H. Charuvil, J.M.Urco, M. Clahsen, V. Avsarkisov, R. Marino, and R. Volz

There are few observational techniques for measuring the distribution of kinetic energy within the mesosphere with a wide range of spatial and temporal scales. This study describes a method for (...)

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Effect of fluid inertia on the orientation of a small prolate spheroid settling in turbulence

Article in New Journal of Physics (2019)

Effect of fluid inertia on the orientation of a small prolate spheroid settling in turbulence

Kristian Gustavsson, Muhammad Zubair Sheikh, Diego Lopez, Aurore Naso, Alain Pumir and Bernard Mehlig

We study the angular dynamics of small non-spherical particles settling in a turbulent flow, such as ice crystals in clouds, aggregates of organic material in the oceans, or fibres settling in (...)

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Diffusiophoresis, Batchelor scale and effective Péclet numbers

Article in J. Fluid. Mech. (2019)

Diffusiophoresis, Batchelor scale and effective Péclet numbers

Florence Raynal & Romain Volk

We study the joint mixing of colloids and salt released together in a stagnation point or in a globally chaotic flow. In the presence of salt inhomogeneities, the mixing time is strongly modified (...)

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Assessing the nonequilibrium of decaying turbulence with reversed initial fields

Article in Phys. Rev. Fluids (2019)

Assessing the nonequilibrium of decaying turbulence with reversed initial fields

F. Liu, L. P. Lu, Wouter J. T. Bos & Le Fang

Recently, it was observed that in nonequilibrium turbulent flows the normalized dissipation rate depends in a fairly universal way on the Reynolds number of the flow. To assess theoretical (...)

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Experimental investigation of vertical turbulent transport of a passive scalar in a boundary layer: Statistics and visibility graph analysis

Article in Phys. Rev. Fluids (2019)

Experimental investigation of vertical turbulent transport of a passive scalar in a boundary layer: Statistics and visibility graph analysis

G. Iacobello, M. Marro, L. Ridolfi, P. Salizzoni & S. Scarsoglio

The dynamics of a passive scalar plume in a turbulent boundary layer is experimentally investigated via vertical turbulent transport time series. Experimental data are acquired in a rough-wall (...)

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Linking dissipation, anisotropy, and intermittency in rotating stratified turbulence at the threshold of linear shear instabilities

Article in Phys. Fluids (2019)

Linking dissipation, anisotropy, and intermittency in rotating stratified turbulence at the threshold of linear shear instabilities

Annick Pouquet, Duane Rosenberg & Raffaele Marino

Analyzing a large database of high-resolution three-dimensional direct numerical simulations of decaying rotating stratified flows, we show that anomalous mixing and dissipation, marked (...)

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