A new method for isolating turbulent states in transitional stratified plane Couette flow
نویسندگان
چکیده
منابع مشابه
A Numerical Study of Turbulent Stably-Stratified Plane Couette Flow
Direct numerical simulations (DNS) of stably-stratified, turbulent plane Couette flow are currently being performed on the XC-4000. The friction Reynolds number is kept approximately constant, Reτ 540 and the Richardson number Riw varies between 0 and 0.1. The flow is divided into two regions: the region close to the wall and the core region. The region close to the wall presents strong velocit...
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Paul Manneville Laboratoire d’Hydrodynamique (LadHyX) École polytechnique, F-91128 Palaiseau, France e-mail: [email protected] Web page: http://www.ladhyx.polytechnique.fr/ ABSTRACT Introduction. The problem of the transition to turbulence is best understood in a globally supercritical context, e.g. for Rayleigh–Bénard convection. Difficulties arise for open flows that ar...
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A large body of recent work in wall-bounded, unstratified shear flow has been dedicated to finding Exact Coherent Structures (ECS) (e.g. see the review Kawahara et al. (2012)). These are fully non-linear, invariably unstable, exact solutions which help understand how turbulence arises. The growing consensus is that the existence of these solutions is a necessary (but not sufficient) condition f...
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ژورنال
عنوان ژورنال: Journal of Fluid Mechanics
سال: 2016
ISSN: 0022-1120,1469-7645
DOI: 10.1017/jfm.2016.627