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 2015

Publications T&I 2015

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Global modes with multiple saddle points

Article in Eur. J. Mech. B-Fluids (2015)

Global modes with multiple saddle points

Benoît Pier & Nigel Peake

Significant progress has been made towards understanding the global stability of slowly-developing shear flows. The WKBJ theory developed by Patrick Huerre and his co-authors has proved (...)

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 The structural sensitivity of open shear flows calculated with a local stability analysis

Article in Eur. J. Mech. B-Fluids (2015)

The structural sensitivity of open shear flows calculated with a local stability analysis

Matthew Juniper & Benoît Pier

The structural sensitivity shows where an instability of a fluid flow is most sensitive to changes in internal feedback mechanisms. It is formed from the overlap of the flow’s direct and adjoint (...)

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Collision rate for suspensions at large Stokes numbers – comparing Navier–Stokes and synthetic turbulence

Article in J. Turbul. (2015)

Collision rate for suspensions at large Stokes numbers – comparing Navier–Stokes and synthetic turbulence

Michel Voßkuhle, Alain Pumir, Emmanuel Lévêque & Michael Wilkinson

The use of simplified models of turbulent flows provides an appealing possibility to study the collision rate of turbulent suspensions, especially in conditions relevant to astrophysics, which (...)

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Flow dynamics and magnetic induction in the von-Kármán plasma experiment

Article in J. Plasma Phys. (2015)

Flow dynamics and magnetic induction in the von-Kármán plasma experiment

N. Plihon, G. Bousselin, F. Palermo, J. Morales, W. J. T. Bos, F. Godeferd, M. Bourgoin, J.-F. Pinton, M. Moulin & A. Aanesland

The von-Kármán plasma experiment is a novel versatile experimental device designed to explore the dynamics of basic magnetic induction processes and the dynamics of flows driven in weakly (...)

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On the effect of natural convection on solute segregation in the horizontal Bridgman configuration: Convergence of a theoretical model with numerical and experimental data

Article in J. Cryst. Growth (2015)

On the effect of natural convection on solute segregation in the horizontal Bridgman configuration: Convergence of a theoretical model with numerical and experimental data

S. Kaddeche, J.-P. Garandet, D. Henry, H. Ben Hadid, A. Mojtabi

The effect of natural convection on solute segregation in the horizontal Bridgman configuration is studied. The objective is to check whether a single non-dimensional number, based on the fluid (...)

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Laminar heat transfer in the MLLM static mixer

Article in Int. J. Heat Mass Trans. (2015)

Laminar heat transfer in the MLLM static mixer

Mathieu Creyssels, Simon Prigent, Yixian Zhou, Xin Jianjin,Christian Nicot & PhilippeCarrière

The multi-level laminating mixer (MLLM) is a static mixer whose concept is based on a three-dimensional implementation of the baker’s transformation. The present work is a first attempt to study (...)

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Distinguishing turbulent overturns in high-sampling-rate moored thermistor string observations

Article in J. Mar. Res. (2015)

Distinguishing turbulent overturns in high-sampling-rate moored thermistor string observations

Hans van Haren & Louis Gostiaux

Turbulent overturns are distinguished from salinity-compensated intrusions in high-resolution moored thermistor string observations. The buoyancy frequency N is used to make the time (...)

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Modelling of edge localised modes and edge localised mode control

Article in Phys. Plasmas (2015)

Modelling of edge localised modes and edge localised mode control

G. T. A. Huijsmans, C. S. Chang, N. Ferraro, L. Sugiyama, F. Waelbroeck, X. Q. Xu, A. Loarte & S. Futatani

Edge Localised Modes (ELMs) in ITER Q = 10 H-mode plasmas are likely to lead to large transient heat loads to the divertor. To avoid an ELM induced reduction of the divertor lifetime, the large ELM (...)

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Bicoherence analysis of streamer dynamics induced by trapped ion modes

Article in The European Physical Journal D (2015)

Bicoherence analysis of streamer dynamics induced by trapped ion modes

Francesco Palermo, Xavier Garbet & Alain Ghizzo

High order spectral analyses have recently attracted a great deal of attention in the context of experimental studies for magnetic fusion. Among these techniques, bicoherence analysis plays an (...)

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Optical flow for incompressible turbulence motion estimation

Article in Exp. Fluids (2015)

Optical flow for incompressible turbulence motion estimation

Xu Chen, Pascal Zillé, Liang Shao & Thomas Corpetti

We propose in this paper a new formulation of optical flow dedicated to 2D incompressible turbulent flows. It consists in minimizing an objective function constituted by an observation term and a (...)

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