[HTML][HTML] Turbulent boundary layer trailing-edge noise: Theory, computation, experiment, and application

S Lee, L Ayton, F Bertagnolio, S Moreau… - Progress in Aerospace …, 2021 - Elsevier
When the pressure fluctuations caused by turbulence vorticity in the boundary layer are
scattered by a sharp trailing edge, acoustic energy is generated and propagated to the far …

Aeroacoustics of silent owl flight

JW Jaworski, N Peake - Annual Review of Fluid Mechanics, 2020 - annualreviews.org
The ability of some species of owl to fly in effective silence is unique among birds and
provides a distinct hunting advantage, but it remains a mystery as to exactly what aspects of …

Boundary layer characterization and acoustic measurements of flow-aligned trailing edge serrations

C Arce León, R Merino-Martínez, D Ragni… - Experiments in …, 2016 - Springer
Trailing edge serrations designed to reduce airfoil self-noise are retrofitted on a NACA 0018
airfoil. An investigation of the boundary layer flow statistical properties is performed using …

Analytic solution for aerodynamic noise generated by plates with spanwise-varying trailing edges

LJ Ayton - Journal of Fluid Mechanics, 2018 - cambridge.org
This paper presents an analytic solution for aerodynamic noise generated by an unsteady
wall pressure gust interacting with a spanwise-variable trailing edge in a background steady …

Aerodynamic noise from rigid trailing edges with finite porous extensions

A Kisil, LJ Ayton - Journal of Fluid Mechanics, 2018 - cambridge.org
This paper investigates the effects of finite flat porous extensions to semi-infinite
impermeable flat plates in an attempt to control trailing-edge noise through bio-inspired …

Reducing aerofoil–turbulence interaction noise through chordwise-varying porosity

LJ Ayton, MJ Colbrook, TF Geyer… - Journal of Fluid …, 2021 - cambridge.org
This paper considers the effects of smoothly varying chordwise porosity of a finite perforated
plate on turbulence–aerofoil interaction noise. The aeroacoustic model is made possible …

On the noise reduction of a porous trailing edge applied to an airfoil at lifting condition

C Teruna, F Avallone, D Ragni, D Casalino - Physics of Fluids, 2021 - pubs.aip.org
Numerical simulations, using a lattice-Boltzmann technique, have been carried out to study
the effect of aerodynamic loading and Reynolds number on the aeroacoustics of a porous …

Numerical analysis of a 3-D printed porous trailing edge for broadband noise reduction

C Teruna, F Avallone, D Ragni… - Journal of Fluid …, 2021 - cambridge.org
Lattice Boltzmann simulations were carried out to investigate the noise mitigation
mechanisms of a 3-D printed porous trailing-edge insert, elucidating the link between noise …

Trailing-edge noise from the scattering of spanwise-coherent structures

A Sano, LI Abreu, AVG Cavalieri, WR Wolf - Physical Review Fluids, 2019 - APS
A large-eddy simulation of turbulent, compressible flow around a NACA 0012 airfoil at zero
angle of attack and Mach number 0.115 is used to study mechanisms of trailing-edge noise …

Control of acoustic scattering of trailing edge flow by distributed compliance

I Arif, MR Naseer, RCK Leung, S Salamat - Physics of Fluids, 2023 - pubs.aip.org
In this paper, an approach for the reduction of trailing edge noise due to flow scattering from
a semi-infinite splitter plate is proposed. It utilizes the fluid–structure interactions of well …