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

Article dans Nature Communications (2016)

Generation of internal solitary waves by frontally forced intrusions in geophysical flows

Daniel Bourgault, Peter S. Galbraith, Cédric Chavanne

Internal solitary waves are hump-shaped, large-amplitude waves that are physically analogous to surface waves except that they propagate within the fluid, along density steps that typically (...)

Article dans Flow Turbul. Combust. (2016)

Acceleration statistics of finite-size particles in turbulent channel flow in the absence of gravity

Wenchao Yu, Ivana Vinkovic & Marc Buffat

The interaction between finite-size particles and turbulent channel flow in the absence of gravity is studied here by direct numerical simulation. The turbulent flow is resolved by an efficient (...)

Article dans Comput. Fluids (2016)

A Kalman filter adapted to the estimation of mean gradients in the large-eddy simulation of unsteady turbulent flows

Jérôme Boudet, Emmanuel Lévêque, Pierre Borgnat, Adrien Cahuzac, Marc C. Jacob

A computationally-efficient method based on Kalman filtering is introduced to capture “on the fly” the low-frequency (or very large-scale) patterns of a turbulent flow in a large-eddy simulation (...)

Article dans J. Fluid Mech. (2016)

A spectral model for homogeneous shear-driven anisotropic turbulence in terms of spherically averaged descriptors

Vincent Mons, Claude Cambon & Pierre Sagaut

A nonlinear spectral model in terms of spherically averaged descriptors is derived for the prediction of homogeneous turbulence dynamics in the presence of arbitrary mean-velocity gradients. The (...)

Article dans Renew. Energy (2016)

Fast power output prediction for a single row of ducted cross-flow water turbines using a BEM-RANS approach

Favio Dominguez, Jean-Luc Achard, Jerônimo Zanette, Christophe Corre

A numerical model is proposed to efficiently compute the power produced by a row of Vertical Axis Water Turbines (VAWTs) deployed in parallel for various water flow conditions. As the (...)

Article dans Phys. Rev. E (2016)

Structure of sheared and rotating turbulence : Multiscale statistics of Lagrangian and Eulerian accelerations and passive scalar dynamics

Frank G. Jacobitz, Kai Schneider, Wouter J.T. Bos & Marie Farge

The acceleration statistics of sheared and rotating homogeneous turbulence are studied using direct numerical simulation results. The statistical properties of Lagrangian and Eulerian (...)

Article dans Exp. Fluids (2016)

Super-resolution of turbulent passive scalar images using data assimilation

Pascal Zille, Thomas Corpetti, Liang Shao & Chen Xu

In this paper, the problem of improving the quality of low-resolution passive scalar image sequences is addressed. This situation, known as “image super-resolution” in computer vision, aroused to (...)

Article dans Europhys. Lett. (2016)

Spread of consensus in self-organized groups of individuals : Hydrodynamics matters

Alessandro De Rosis, Emmanuel Lévêque, Francesco Ubertini & Sauro Succi

Nature routinely presents us with spectacular demonstrations of organization and orchestrated motion in living species. Efficient information transfer among the individuals is known to be (...)

Article dans Ultrasonics (2016)

Y-shaped jets driven by an ultrasonic beam reflecting on a wall

Brahim Moudjed, Valéry Botton, Daniel Henry, Séverine Millet & Hamda Ben Hadid

This paper presents an original experimental and numerical investigation of acoustic streaming driven by an acoustic beam reflecting on a wall. The water experiment features a 2 MHz acoustic beam (...)

Article dans J. Therm. Sci. Eng. Appl. (2016)

Active Insulation Technique Applied to the Experimental Analysis of a Thermodynamic Control System for Cryogenic Propellant Storage

Samuel Mer, Jean-Paul Thibault & Christophe Corre

A technological barrier for long-duration space missions using cryogenic propulsion is the control of the propellant tank self-pressurization (SP). Since the cryogenic propellant submitted to (...)

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

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Publications T&I 2016

Generation of internal solitary waves by frontally forced intrusions in geophysical flows

Acceleration statistics of finite-size particles in turbulent channel flow in the absence of gravity

A Kalman filter adapted to the estimation of mean gradients in the large-eddy simulation of unsteady turbulent flows

A spectral model for homogeneous shear-driven anisotropic turbulence in terms of spherically averaged descriptors

Fast power output prediction for a single row of ducted cross-flow water turbines using a BEM-RANS approach

Structure of sheared and rotating turbulence : Multiscale statistics of Lagrangian and Eulerian accelerations and passive scalar dynamics

Super-resolution of turbulent passive scalar images using data assimilation

Spread of consensus in self-organized groups of individuals : Hydrodynamics matters

Y-shaped jets driven by an ultrasonic beam reflecting on a wall

Active Insulation Technique Applied to the Experimental Analysis of a Thermodynamic Control System for Cryogenic Propellant Storage