Description du sujet de thèse

The PhD student will be part of a broader effort under the aegis of ERC AdG project NoStaHo and will therefore be part of a research group consisting of Post Doctoral Researchers and some other PhD students. NoStaHo's overarching aim is the development of a new and extensive fundamental understanding and theory of non-stationary and/or non-homogeneous turbulence, including the identification of universality classes depending on types of non-homogeneity/non-stationarity, and then
a consequent road map for turbulent flow prediction methods. Whilst the NoStaHo project comprises both experimental and computational activities,this PhD studentship will be experimental. The flows that the student will focus on will be turbulent wakes.
Among the many aspects of the flows to concentrate on, are coherent structures and their impacts on turbulence energy exchanges, turbulence cascades and dissipation;
impacts of these energy exchanges/transfers through space and across different size eddies on basic statistics and profiles of turbulent flows; fluctuating/intermittent behaviours which can take various forms: fluctuations around equilibrium in the case of statistically stationary homogeneous turbulence; intermittency in the peripheries of turbulent shear flows where the turbulence/non-turbulence interface is the near-singular structure responsible for this external intermittency; internal intermittent fluctuations in the bulk of turbulent shear flows in the absence of equilibrium. The PhD student will have the opportunity to work on a few particular aspects for a particular flow or set of flows and to put their findings in a broader context provided by the
overall research in the group thereby allowing the PhD student to reach deeper/broader conclusions. The PhD student will participate in the implementation of the experiments in the wind tunnel by contributing to the different ways of analysing the data obtained.

He/she will (a) participate in the design and implementation of the experiments (b) perform the quantitative analysis of the data, (c) present the results (c) present the results obtained, (d) participate in the writing of the (d) participate in the writing of manuscripts for the publication of the results.

Contexte de travail

The post-doctoral research will be a member of the turbulence group of the LMFL and of the NoStaHo research team. She/he will be supported by the experimental, computational and theoretical experts of the group.

Contraintes et risques

No risk in particular

Informations complémentaires

The candidate will have a Master in Fluid Mechanics and/or turbulence. He/she will ideally have an first experience in experimental methods for turbulent flows