This study derives and compares vortex identification methods for detecting vortices in
planar velocity fields. Two-dimensional (2D) forms of the commonly used Δ, Q, λ ci, and λ 2 …

A turbulent horseshoe vortex (HV) system is generated around a wall-normal cylinder when
the approaching boundary layer separates from the wall. This study investigates the …

Time-resolved particle image velocimetry measurements were performed in smooth-walled
open channels to investigate the contributions of very large-scale motions (VLSMs) to the …

The flow fields around different pile groups (multiple circular cylinders) mounted vertically on
a flat bed were experimentally studied by using Particle Image Velocimetry (PIV). The …

An experimental study is performed to determine the mechanisms by which a forward-facing
step impacts the growth and breakdown to turbulence of the stationary cross-flow instability …

This study concerns the flow and associated sediment transport in front of a cylinder in
steady currents. The study comprises (i) flow characteristics induced by the turbulent …

Drag for wall-bounded flows is directly related to the spatial flux of spanwise vorticity
outward from the wall. In turbulent flows a key contribution to this wall-normal flux arises from …

This study concerns the turbulent flow field influenced by the scour development around a
bridge pier. The scour hole evolution as well as the temporal variation of scour depth around …

Swirling strength, λ ci, is an effective vortex indicator in wall turbulence, and existing vortex
extraction methods introduce normalisation of λ ci with its root mean square as the basis for …

Wall-bounded turbulent flows have been found to be dominated by spatially organized,
temporally evolving vortices which play an important role in shaping the wall turbulence. 1–3 …