195 citations · 469 across the 13 of their papers we have counts for
16 papers
Scaling of boundary-layer disturbances exposed to free-stream turbulence
Pierre Ricco
We present theoretical results related to the experimental findings of Matsubara and Alfredsson (2001) on the scaling of the energy spectra of the Klebanoff modes, i.e. streamwise-…
Integral relations for the skin-friction coefficients and other quantities of annular flows
Pierre Ricco
Integral identities relating the skin-friction coefficients and the Reynolds shear stresses in annular cylindrical flows are derived. In the pressure-driven case, an identity for t…
Turbulent boundary layers altered by passively rotating discs
Max W. Knoop, Pierre Ricco
Turbulent boundary layers characterised by friction Reynolds numbers in the range and flowing over flush-mounted passively rotating discs are investigated in a…
Transient and periodic shear wave propagation in a solid-fluid coupled system
Aaron D'Cruz, Pierre Ricco
A coupled system composed of a Newtonian fluid located on a sinusoidally-forced elastic solid is studied analytically and numerically. The focus is on the transient evolution from…
Compressible boundary layers over isotropic porous surfaces
Ludovico Fossà, Pierre Ricco
A compressible laminar boundary layer developing over an isotropic porous substrate is investigated by asymptotic and numerical methods. The substrate is modeled as an array of cub…
Excitation and stability of nonlinear compressible Görtler vortices and streaks induced by free-stream vortical disturbances
Dongdong Xu, Pierre Ricco, Elena Marensi
We study the generation, nonlinear development and secondary instability of unsteady Görtler vortices and streaks in compressible boundary layers exposed to free-stream vortical di…
Receptivity of compressible boundary layers over porous surfaces
Pierre Ricco, Ludovico Fossà
Supersonic pre-transitional boundary layers flowing over porous flat and concave surfaces are studied using numerical and asymptotic methods. The porous wall is composed of thin eq…
Integral relations for the skin-friction coefficient of canonical flows
Pierre Ricco, Martin Skote
We show that the Fukagata et al. (2002)'s identity for free-stream boundary layers simplifies to the von Karman momentum integral equation relating the skin-friction coefficient an…
Reduction of turbulent skin-friction drag by passively rotating discs
Paolo Olivucci, Daniel J. Wise, Pierre Ricco
A turbulent channel flow modified by the motion of discs that are free to rotate under the action of wall turbulence is studied numerically. The Navier-Stokes equations are coupled…
Separation drag reduction through a spanwise oscillating pressure gradient
Vinh-Tan Nguyen, Pierre Ricco, Gianluca Pironti
An oscillating spanwise pressure gradient is imposed numerically to control the flow separation and reduce the drag of a turbulent flow in a channel with square bars. The transvers…
A review of turbulent skin-friction drag reduction by near-wall transverse forcing
Pierre Ricco, Martin Skote, Michael A. Leschziner
The quest for reductions in fuel consumption and CO2 emissions in transport has been a powerful driving force for scientific research into methods that might underpin drag-reducing…
Spinning out of control: wall turbulence over rotating discs
Daniel J. Wise, Claudia Alvarenga, Pierre Ricco
The friction drag reduction in a turbulent channel flow generated by surface-mounted rotating disc actuators is investigated numerically. The wall arrangement of the discs has a co…
Turbulent drag reduction through oscillating discs
Daniel J. Wise, Pierre Ricco
The changes of a turbulent channel flow subjected to oscillations of wall flush-mounted rigid discs are studied by means of direct numerical simulations. The Reynolds number is $R_…
Changes in turbulent dissipation in a channel flow with oscillating walls
Pierre Ricco, Claudio Ottonelli, Yosuke Hasegawa +1
Harmonic oscillations of the walls of a turbulent plane channel flow are studied by direct numerical simulations to improve our understanding of the physical mechanism for skin-fri…
The laminar generalized Stokes layer and turbulent drag reduction
Maurizio Quadrio, Pierre Ricco
This paper considers plane channel flow modified by waves of spanwise velocity applied at the wall and travelling along the streamwise direction. Laminar and turbulent regimes for…
Wall-oscillation conditions for drag reduction in turbulent channel flow
Pierre Ricco, Maurizio Quadrio
The drag reduction properties of a turbulent channel flow modified by spanwise sinusoidal oscillations of the walls are investigated by direct numerical simulations. The work is ba…