Transitional–turbulent spots bridge the deterministic laminar state with the stochastic
turbulent state and affect the transition zone length in engineering flows. Turbulent spot …

With decreasing Reynolds number, lower than the non-localised solutions. Relative periodic
orbit solutions bifurcating from branches of travelling waves have also been computed. A …

In this paper we experimentally study the transitional range of Reynolds numbers in plane
Couette–Poiseuille flow, focusing our attention on the localized turbulent structures triggered …

The transitional regime of plane channel flow is investigated above the transitional point
below which turbulence is not sustained, using direct numerical simulation in large domains …

Although blood flows are mostly laminar, transition to turbulence and flow separations are
observed at curved vessels, bifurcations, or constrictions. It is known that wall-shear stress …

We numerically studied high-aspect-ratio channel flows with spanwise sidewalls, that is,
wide duct flows, in its subcritical turbulent transitional regime. The infinite channel flow is …

Using a large-time-resolved particle image velocimetry field of view, a developing turbulent
spot is followed in space and time in a rectangular channel flow for more than 100 advective …

We present new experimental results on the development of turbulent spots in channel flow.
The internal structure of a turbulent spot is measured, with Time Resolved Stereoscopic …

Annular Couette flow is the flow between two coaxial cylinders driven by the axial translation
of the inner cylinder. It is investigated using direct numerical simulation in long domains, with …

This study presents DNS results of the laminar–turbulent spatial transition in a plane
channel flow. The transition is achieved imposing at the inlet the most unstable modes of the …