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Offres de Thèses et Postdocs
- 01 SEP 01 JULToutes les informations sur cette annonce de postdoc sont accessibles sur le portail du CNRS:https://emploi.cnrs.fr/Gestion/Offre/Default.aspx?Ref=UMR7648-SEBGAL-001
- 02 SEP 01 SEPPostdoc on Wind tunnel investigation of the influence of buoyancy on dynamics of street canyon flowsWithin the ANR MUFDD project, a major challenge is to account for the strong complexity and variability of urban flows due to the change in atmospheric stability. Urban flows are known to be highly complex and to have a high variability. These limitations are exacerbated when buoyancy effects are taken into account and added to wind-shear effects. Deriving reduced-order models which are versatile and robust with respect to a change in boundary conditions such as wind speed or atmospheric stability remains crucial.The main objective of the position opening at LHEEA is to build upon previous work conducted by the DAUC group on the dynamics of isothermal street canyon flows to investigate the influence of buoyancy on the spatio-temporal characteristics of street canyon flows via a series of detailed wind-tunnel experiments. Attention will be devoted to the dynamics of the coherent structures within and above the canyon, and to their interaction with those of the oncoming boundary layer.
- 02 SEP 01 SEPThe main objective of this project is to further develop a new methodology to generate inflow conditions for aerodynamics and aeroelastic codes for floating offshore wind turbines operating in the wake of an upstream wind turbine. Accounting for the correct characteristics of the oncoming wind is crucial for the accuracy of aeroelastic simulations.Promising results have been obtained in previous work (https://doi.org/10.5194/wes-8-1711-2023), based on directly coupling wind tunnel experiments to an aeroelastic code. The goal of the opening position is to further improve this approach, in particular by assessing the potential of using high-speed stereoscopic PIV, as well as investigating the degree of representativity of the generated inflow conditions required to perform satisfactory aeroelastic simulations.
- 01 OCT 01 MAYThe post-doc will run a new experimental setup aiming at reaching the weakly non-linear wave turbulence regime in a stratified (and rotating) fluid. The objective is to test the theoretical predictions of the Weak Turbulence Theory which might be relevant to describe the turbulent dynamics of the oceans at small scales but remains controversial.
- 01 OCT 30 SEPL’équipe Curiosity de l’institut Pprime souhaite recruter un.e doctorant.e (ou un.e post-doctorant.e) dans le cadre d’une collaboration avec les Voies Navigables de France (VNF) et le Laboratoire de Mathématiques et Applications (LMA) de Poitiers afin d’étudier la navigation en milieu confiné dans une optique d’interaction fluide-structures. En complément à un post-doctorat en cours sur une revisite des travaux théoriques sur les effets de confinement hydraulique et ondulatoire pour un bateau fluvial en interaction avec l’ouvrage (typiquement un canal à forme trapézoïdal), nous souhaitons désormais alimenter les études théoriques par des expériences permettant de cribler les modèles ainsi que de guider les modélisateurs vers les modèles pertinents du fait de lacunes dans la compréhension des phénomènes tels que révélées par l’analyse de la littérature et que les expériences pourraient combler.
- 01 NOV 30 OCTA two-year postdoc position on the "Aggregation and Fragmentation of Flexible Fibers in Turbulent flows" is available at Université Côte d'Azur, Nice (Inphyni and LJAD)