Coherent structures near the wall in a turbulent channel flow (original) (raw)

Journal of Fluid Mechanics, 1997

Abstract

Coherent structures (CS) near the wall (i.e. y+ [less-than-or-eq, slant] 60) in a numerically simulated turbulent channel flow are educed using a conditional sampling scheme which extracts the entire extent of dominant vortical structures. Such structures are detected from the instantaneous flow field using our newly developed vortex definition (Jeong & Hussain 1995) a region of negative [lambda]2, the second

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