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Travelling-waves consistent with turbulence-driven secondary flow in a square duct

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Uhlmann, Markus and Kawahara, Genta and Pinelli, Alfredo (2010) Travelling-waves consistent with turbulence-driven secondary flow in a square duct. Physics of fluids, 22 (8). ISSN 1070-6631

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http://arxiv.org/abs/1011.0442Organisation


Abstract

We present numerically determined travelling-wave solutions for pressure-driven flow through a straight duct with a square cross-section. This family of solutions represents typical coherent structures (a staggered array of counter-rotating streamwise vortices and an associated low-speed streak) on each wall. Their streamwise average flow in the cross-sectional plane corresponds to an eight vortex pattern much alike the secondary flow found in the turbulent regime.


Item Type:Article
Uncontrolled Keywords:Coherent structures; rectangular duct; channel flow; stability; wall
Subjects:Sciences > Physics > Mathematical physics
ID Code:21853
Deposited On:14 Jun 2013 10:22
Last Modified:12 Dec 2018 15:07

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