Missions

The appearance of macroscopic bubbles inside a liquid by cavitation as the pressure drops has its origins in nano/microscopic bubbles, known as nuclei. These nuclei are trapped in surface defects or stabilized by impurities and serve as nucleation sites for cavitation, which is then described as heterogeneous. Although nuclei are generally assumed to form during immersion in the liquid, we have recently shown that they can also appear spontaneously. The aim of the overall project is to elucidate the mechanism responsible for this nuclei generation.

Activités

- Set-up, interfacing and automation of an acoustic cavitation experiment
- Experiments for different defects and liquid environments
- Data processing and analysis
- Modeling of diffusion/adsorption and capillary phenomena

Compétences

- PhD in fluid mechanics
- Experience in setting up complex experiments and in automation/interfacing
- Knowledge of capillarity, cavitation and gas transport is highly desirable

Contexte de travail

The postdoc will be hosted at MSC (Matière et Systèmes Complexes) UMR 7057, a pluridisciplinary laboratory (hydrodynamic, soft matter, biophysics, statistical physics and morphogenesis) which is part of the UFR of physic of the Univesité Paris Cité. She/he will be part of the DOMM (Dynamique et Organisation de la Matière Molle) team and will closely collaborate with Valentin Leroy (CNRS) and Adrien Bussonnière (CNRS).

Contraintes et risques

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