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Master 2
Stage de M2 2025: durée 6 mois

Impact d’un ressaut hydraulique mobile sur la génération de turbulence dans un écoulement stationnaire et impact sur le lit sédimentaire.

Ce stage concerne l’étude expérimentale d’un ressaut en translation et tout particulièrement les phénomènes aux interfaces. L’objectif du stage est de mesurer l’impact de la déformation de surface libre sur l’écoulement et sur le fond du canal donc une interface air/eau et une interface eau/sédiment.
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5 months

Master 2 Project - Adjoint based optimization of acoustic liners' impedance

In this project, we are interested in the attenuation of an acoustic wave by an absorbent material placed on the wall of a pipe, in the presence of a flow. This configuration is typically found in aircraft engines or ventilation ducts. The objective will be to set up simple numerical simulations with a wall impedance, and then to optimize this impedance to achieve maximum absorption of the acoustic field. The average flow, which can bring some complications, will first be neglected and included in a second step. The numerical developments will be done in Matlab.
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6 months

Modeling and Experimentation of Physicochemical Interactions Between High-Temperature Water Vapor and Materials

The objective is to study how high-temperature water, resulting from hydrogen combustion, penetrates materials via grain boundaries and interacts with their structure, causing damage. This internship is part of a broader project, which will be followed by a Ph.D. project aimed at combining experimental results from various devices to develop a relevant 1D numerical model of diffusion and material damage mechanisms. Initial experiments will address two major issues: first, evaluating the characteristic times associated with diffusional-reactive mechanisms within the solid; second, processing data and images from measurements to convert them into variables that can be theoretically and numerically exploited.
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6 months

Numerical Simulation of the Physico-Chemical Mechanisms of Interaction Between a Water Mist and a Non-Premixed Flame

This internship aims to model and analyze the effect of water droplets on convective and radiative heat fluxes at the condensed fuel surface, flame structure, and unburned species using the FDS6 or FireFoam software. The primary goal is to provide general insights into the physico-chemical interaction mechanisms between the water mist and the non-premixed flame as a function of droplet size and spray velocity.
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5 mois

Stage Master 2 : Modeling acoustic flow inside a thermoacoustic regenerator

Oscillating flows are encountered in many engineering applications, such as blood flows and fluid control systems. Oscillating flows at high frequencies (i.e., acoustic flows) have much less investigated than quasi-steady oscillating flows (i.e., low frequency and high amplitude). Acoustic flows are found in many engineering applications, such as Stirling engines and thermoacoustic devices (i.e., engines and refrigerators). The change of the flow regime from laminar to turbulence is an important phenomenon because it may influence the performance of these devices. The current study focuses on thermoacoustic devices
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