The Proceedings of the Fluids engineering conference
Online ISSN : 2424-2896
2013
Conference information
0502 Symmetry of Vortex Structures in Shear Flow at High Reynolds Numbers
Tomoaki ITANOTakeshi AKINAGAGENERALIS Sotos C.Takahiro NINOMIYAMasako SUGIHARA-SEKI
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CONFERENCE PROCEEDINGS FREE ACCESS

Pages _0502-01_-_0502-02_

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Abstract
An outline of the state space of planar Couette flow at high Reynolds numbers (Re < 10^4) is investigated via a variety of efficient numerical techniques. It is verified from nonlinear analysis that the lower branch of Hairpin Vortex State (HVS) asymptotically approaches the primary (laminar) state with increasing Re. It is also predicted that the lower branch of HVS at high Re belongs to the stability boundary that initiates transition to turbulence. These facts suggest HVS may provide a criterion to estimate a minimum perturbation arising transition to turbulent states at the infinite Re limit.
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© 2013 The Japan Society of Mechanical Engineers
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