Book of abstracts of EUROMECH Colloquium 525 - Instabilities and transition in three-dimensional flows with rotation

Abstract : Chairman: Benoît PIER, LMFA, CNRS---Université de Lyon Co-chairmen: Fabien GODEFERD, LMFA, CNRS---Université de Lyon Nigel PEAKE, DAMTP, Cambridge University, UK Scientific committee: François GALLAIRE, École polytechnique fédérale de Lausanne, Switzerland Matthew P. JUNIPER, Engineering, Cambridge University, UK Robert RUBINSTEIN, NASA Langley, US Scientific scope and topics: Shear flows are known to display a variety of spatio-temporal instabilities and very complex transition scenarios. The route from laminar flow to the fully turbulent régime cannot be understood without taking into account three-dimensional effects. Particularly interesting phenomena are observed in the presence of rotation --- either external, through rotating boundaries, or internal, through large-scale vorticity. Recently, our understanding of such flows has been improved by technical advances in analysis and experiments as well as a vast increase in computational capabilities. This allows consideration of increasingly complex mean flow distortions. The hydrodynamic stability community and the turbulence community tackle the additional complexity arising from three-dimensional coupling with different techniques. These techniques can however be compared and, whenever possible, linked. By bringing together experts in experimental, analytical and numerical approaches, this colloquium attempts to clarify the global picture prevailing near transition and to narrow the gap between stability and turbulence analyses. It is expected that the development of modern analytical tools will suggest new experiments, and that novel experimental observations will in turn inspire more theoretical work. Contributions have been received from the following topics: * Three-dimensional boundary layers * Flows around or inside rotating bodies * Vortex breakdown * Spatio-temporal development of perturbations * Transition scenarios * Flow control * Transient phenomena * Inhomogenous and anisotropic turbulence Contents: * 6 keynote lectures * 38 oral presentations * 7 posters
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Benoît Pier. Book of abstracts of EUROMECH Colloquium 525 - Instabilities and transition in three-dimensional flows with rotation. 2011. ⟨hal-00601644⟩



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