Turbulence budget in transitional plane Couette flow with turbulent stripe
نویسندگان
چکیده
منابع مشابه
Modeling transitional plane Couette flow
The Galerkin method is used to derive a realistic model of plane Couette flow in terms of partial differential equations governing the space-time dependence of the amplitude of a few cross-stream modes. Numerical simulations show that it reproduces the globally sub-critical behavior typical of this flow. In particular, the statistics of turbulent transients at decay from turbulent to laminar fl...
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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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In plane Couette flow, the incompressible fluid between two plane parallel walls is driven by the motion of those walls. The laminar solution, in which the streamwise velocity varies linearly in the wall-normal direction, is known to be linearly stable at all Reynolds numbers (Re). Yet, in both experiments and computations, turbulence is observed for Re & 360. In this article, we show that when...
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Streamwise and quasi-streamwise elongated structures have been shown to play a significant role in turbulent shear flows. We model the mean behaviour of fully turbulent plane Couette flow using a streamwise constant projection of the Navier– Stokes equations. This results in a two-dimensional three-velocity-component (2D/3C) model. We first use a steady-state version of the model to demonstrate...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2011
ISSN: 1742-6596
DOI: 10.1088/1742-6596/318/3/032033