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Accueil > Emplois, Stages, Thèses > Post-doc

Post-Doc : Large scale plunging jets : impact, energy dissipation and air entrainment

Duration : 12 months, starting in Spring 2023.

Location : LEGI and CERG at Grenoble, France.

Candidate profile : engineering or physics background with strong formation in fluid mechanics. A PhD in a related topic is required. Experience in experimentation measuring techniques and modelling. Experience using Matlab and/or Python is recommended.

Context and how to apply : this postdoctoral contract is funded by the JetPlume ANR project, that involves LEGI (Grenoble, France), LMFA (Lyon), CORIA (Rouen) and Electricité de France (EDF). Periodic meetings and discussions will be held periodically between all partners.

Interested candidates should send their CV and cover letter to Martin Obligado.

Topic : Large-scale plunging jets encountered in hydroelectric infrastructures directly influence turbine operation and performance through their ability to generate huge bubble clouds and thereby draw air into the pipelines under load. Nevertheless, despite the relevance of applications, something as fundamental as predicting the flow rate of air entrained in a pool by a plunging jet is still an open question. This project consists on an experimental study that involves LEGI lab, the Studies and Research Centre from Grenoble (CERG) and Electricité de France (EDF), and aims at providing a better understanding of these flows within hydroelectric installations. I this context, a key parameter for the modelling and scale-up of these flows is the ability of a jet to entrain air under the free surface that it impacts and the characterization of its sub-surface dynamics. Other important parameters are the size distribution of the bubbles generated, the entrained air flow rate and the spatial distribution of local quantities of interest (such as concentrations, phase velocities, flux, etc.).

See attached document for a more complete announcement.