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

Experiments and numerical simulations have shown that turbulence in transitional wall-
bounded shear flows frequently takes the form of long oblique bands if the domains are …

We study the large-scale motions in turbulent plane Couette flows at moderate friction
Reynolds number up to length of the domain. The presence of these very long structures is …

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 …

In this essay, we recall the specificities of the transition to turbulence in wall-bounded flows
and present recent achievements in the understanding of this problem. The transition is …

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 …

Directed percolation (DP), a universality class of continuous phase transitions, has recently
been established as a possible route to turbulence in subcritical wall-bounded flows. In …

We present an experimental setup that creates a shear flow with zero mean advection
velocity achieved by counterbalancing the nonzero streamwise pressure gradient by moving …

Low Reynolds number turbulence in wall-bounded shear flows en route to laminar flow
takes the form of spatially intermittent turbulent structures. In plane shear flows, these appear …

Turbulent–laminar intermittency, typically in the form of bands and spots, is a ubiquitous
feature of the route to turbulence in wall-bounded shear flows. Here we study the idealised …