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 …

Intermittent turbulent-laminar patterns characterize the transition to turbulence in pipe, plane
Couette, and plane channel flows. The time evolution of turbulent-laminar bands in plane …

Transitional localized turbulence in shear flows is known to either decay to an absorbing
laminar state or to proliferate via splitting. The average passage times from one state to the …

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 …

It may come as a surprise that a phenomenon as ubiquitous and prominent as the transition
from laminar to turbulent flow has resisted combined efforts by physicists, engineers and …

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 …

Input–output analysis of transitional channel flows has proven to be a valuable analytical
tool for identifying important flow structures and energetic motions. The traditional approach …

Viscous flows through pipes and channels are steady and ordered until, with increasing
velocity, the laminar motion catastrophically breaks down and gives way to turbulence. How …

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 …