129 datasets found

This document is a synthesis of my career as assistant professor in the three aspect of the job : Administration, education and research.

Alors que les oscillations solaires n'ont pas fini de nous révéler tous leurs secrets, des oscillations acoustiques analogues sont détectées dans un nombre croissant...

This thesis focuses on the history of early solar system solids. We study the dynamics of chondrite components and find their preservation over a few Ma in the...

This work falls within the general problematic of designing measurement tools adapted to the specificities of fluid flows. The development of digital imaging, combined...

International audience

International audience

This thesis aims at detecting large-scale turbulent structures in incompressible Rayleigh-Taylor mixing layers at low Atwood number. Various statistical quantities...

We investigate theoretically and numerically the effect of polymer additives on two-dimensional turbulence by means of a viscoelastic model. We provide compelling...

The sensitivity of the global properties of a turbulent wake behind a D-shaped bluff cylinder is investigated experimentally by introducing a much smaller control...

The main objective of this thesis is to observe numerically and to analyze the effects of intermittency in a high Reynolds number turbulent channel flow. To this end,...

We provide a consistent theory of the tachocline confinement (or anisotropic momentum transport) within an hydrodynamical turbulence model. The goal is to explain...

A Comment on the Letter by Christian Beck, Phys. Rev. Lett. 87, 180601 (2001). The authors of the Letter offer a Reply

A most challenging problem in turbulence is to predict the statistics of flows at the large scales. In the case of the 2D Euler equation and analogous models for...

13 pages

Noise radiated by low-speed fans or aircraft engine fans is made up of tonal noise and broadband noise, the latter being sometimes dominant. The present study suggests...

Résumé Traduit : This thesis is a contribution to the study of turbulence in the near field of a jet exit, with or without swirl. We use an experimental setup which...

International audience

6p.

The study of the atmospheric boundary layer (ABL) is essential for different types of investigations (studies of atmospheric properties, pollution monitoring,...

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