Reducing turbulent skin friction drag is a fundamental goal for aircraft transportation to
conserve energy and decrease emissions. We introduce an annular dielectric barrier …

Spectral energy transfer in a turbulent channel flow is investigated at Reynolds number,
based on the wall shear velocity and channel half-height, with a particular emphasis on full …

Turbulent flows in the presence of walls may be apprehended as a collection of momentum-
and energy-containing eddies (energy-eddies), whose sizes differ by many orders of …

In the present study an optimisation problem is formulated to determine the forcing of an
eddy-viscosity-based linearised Navier–Stokes model in channel flow at is the friction …

Despite the nonlinear nature of turbulence, there is evidence that part of the energy-transfer
mechanisms sustaining wall turbulence can be ascribed to linear processes. The different …

In this contribution, we consider the Dynamic Mode Decomposition (DMD) framework as a
purely data-driven tool to investigate both standard and actuated turbulent channel …

A new set of exact coherent states in the form of a travelling wave is reported in plane
channel flow. They are continued over a range in, using the eddy-viscosity approach …

Abstract A novel Dynamic Mode Decomposition (DMD) technique capable of handling non–
uniformly sampled data is proposed. As it is usual in DMD analysis, a linear relationship …

Townsend's model of attached eddies for boundary layers is revisited within a quasi-linear
approximation. The velocity field is decomposed into a mean profile and fluctuations. While …

It has often been proposed that the formation of large-scale motion (or bulges) is a
consequence of successive mergers and/or growth of near-wall hairpin vortices. In the …