Structural properties of regions of uniform streamwise momentum in turbulent boundary
layers are examined using experimental databases obtained from particle image …

The effect of spanwise wavelength of surface heterogeneity on turbulent secondary flows Page
1 J. Fluid Mech. (2020), vol. 894, A7. c The Author(s), 2020. Published by Cambridge University …

A turbulent boundary layer developed over a herringbone patterned riblet surface is
investigated using stereoscopic particle image velocimetry in the cross-stream plane at …

Despite a growing body of recent evidence on the hierarchical organization of the self-
similar energy-containing motions in the form of Townsend's attached eddies in wall …

An assessment of self-similarity in the inertial sublayer is presented by considering the wall-
normal velocity, in addition to the streamwise velocity component. The novelty of the current …

We present experimental evidence that the superstructures in turbulent boundary layers
comprise smaller, geometrically self-similar coherent motions. The evidence comes from …

A high-frame-rate camera and a continuous-wave laser are used to capture long particle
image sequences exceeding 100,000 consecutive frames at framing frequencies up to 20 …

Townsend's attached eddy hypothesis forms the basis of an established model of the
logarithmic layer in wall-bounded turbulent flows in which this inertially dominated region is …

In this paper we examine the characteristics of the interfaces that demarcate regions of
relatively uniform streamwise momentum in turbulent boundary layers. The analysis utilises …

The statistical properties of wall turbulence in the logarithmic region are investigated using
structure functions of the streamwise velocity. To this end, datasets that span several orders …