LEGI - UMR 5519

Transport vertical d'aérosols en vallée alpine : modélisation numérique et mesures de terrain

Remi Chassagne — 2026-09-29T13:03:26Z

08/10/2026 - Pierre Couetoux

- Séminaires internes

Coastal morphodynamic scales and predictions.

Remi Chassagne — 2026-09-29T13:01:26Z

24/09/2026 - Harshinie KARUNARATHNA

- Séminaires internes

3D-LES vegetation-resolved simulations for hydrodynamic investigation of vegetated flows and development of an upscaled model

Remi Chassagne — 2026-09-29T13:00:10Z

17/09/2026 - Marie Skorlic

- Séminaires internes

Proposition de stage - Étude expérimentale d'écoulement en végétation non-uniforme

Remi Chassagne — 2026-09-29T07:57:15Z

Stage M2 - Février 2027
L'objectif du stage est d'effectuer une campagne de mesures expérimentales d'écoulement en présence de végétation non-uniforme, dans le canal à pente variable du LEGI. La personne recrutée devra tout d'abord mettre en place l'expérience, qui consiste principalement à créer et placer de nouvelles plaques de fond qui puisse accueillir de la végétation artificielle (rigide et flexible). Ensuite, elle devra effectuer des mesures de vitesse et de turbulence au dessus et à l'aval de la (...)

- Stages

Mardi 20 Octobre 11h00 - LEGI Salle K118

Nathanaël Machicoane — 2026-09-28T13:23:06Z

Self-excited acoustic waves in axisymmetric systems : insights from aeroacoustics and thermoacoustics
Azimuthal acoustic waves can emerge spontaneously in cylindrical and annular cavities, thus causing operational challenges, intense vibrations and accelerated mechanical fatigue in pipe lines and turbomachines. These self-excited instabilities arise from a feedback loop : the acoustic noise generated by the unsteady flow feeds and couples with the cavity eigenmodes, until a limit cycle (...)

- Séminaires 2026

Mardi 29 Septembre 11h00 - LEGI Salle K118

Juan Ignacio Polanco — 2026-09-09T12:22:17Z

Turbulent mixing mechanisms in heterogeneous flows : internal gravity waves and non-isoviscous turbulence
Turbulent flows play a key role in many geophysical or industrial contexts because of their efficient transport properties. When the transported quantity affects the flow, like in the case of density or viscosity, then subtle two-way couplings between the scalar field and the flow appear and predicting how heterogeneities will evolve in the flow becomes a complex task. In this (...)

- Séminaires 2026

Mardi 22 Septembre 11h00 - LEGI Salle K118

Nathanaël Machicoane — 2026-09-07T08:22:44Z

Bubble and Drop Breakup in Turbulence
Bubble and drop dynamics in turbulent flows are central to many environmental and industrial processes in which interfacial transport of momentum, heat, and mass is controlled by multiscale interactions between turbulence and deformable interfaces. Understanding the mechanisms governing deformation and breakup remains a major challenge in multiphase flow physics. This lecture presents recent advances in the study of turbulent fragmentation using (...)

- Séminaires 2026

Mardi 15 Septembre 11h00 - LEGI Salle K118

Nathanaël Machicoane — 2026-08-31T11:09:57Z

Probabilistic prediction of extreme climate events
Some of the most important events in climate dynamics are rare events related to the fluctuating nature of geophysical flows. Examples of such events include heat waves or extreme precipitation, tropical cyclones, etc. Another class of high-impact events corresponds to the possibility that one or multiple components of the climate system undergo an irreversible transition to a qualitatively different mean state. Improved prediction (...)

- Séminaires 2026

Mardi 30 Juin 11h00 - LEGI Salle K118

Nathanaël Machicoane — 2026-06-16T07:01:56Z

From pore-scale processes to volcanic hazards : multiscale modeling of submarine landslides, tsunamis, and lava flows
Volcanic geophysical flows involve physical processes acting over a wide range of spatial and temporal scales, from particle rearrangements and pore-fluid interactions to the propagation of landslides, waves, and lava flows over complex terrain. This talk presents a multiscale numerical approach for investigating these processes, with particular emphasis on volcanic (...)

- Séminaires 2026

Mardi 13 Octobre 11h00 - LEGI Salle K118

Nathanaël Machicoane — 2026-06-11T18:33:47Z

Laboratory experiments related to marine plastic pollution : a review of past work and future directions
Plastic pollution is a very active research topic for a wide variety of scientific disciplines. While existing reviews of plastic pollution in the ocean cover the topic from different disciplinary and interdisciplinary viewpoints, this review addresses the contributions from laboratory experiments towards the geophysical processes important in marine plastic pollution research. We (...)

- Séminaires 2026