An investigation of airfoil dual acoustic feedback mechanisms at low-to-moderate Reynolds number

E Arcondoulis, CJ Doolan, AC Zander… - Journal of Sound and …, 2019 - Elsevier
An experimental investigation was performed in an anechoic wind tunnel involving acoustic
measurements, hot-wire anemometry and surface flow visualisation techniques to …

[PDF][PDF] A Review on Generation and Mitigation of Airfoil Self-Induced Noise

M Ibren, AD Andan, W Asrar… - Journal of Advanced …, 2022 - researchgate.net
A review on passive acoustic control of airfoil self-noise by means of porous trailing edge is
presented. Porous surfaces are defined using various terms such as porosity, permeability …

Identification of the two-sources at the aircraft slat/fuselage juncture based on phased array

B Bai, Y Zhang, X Li - Aerospace Science and Technology, 2023 - Elsevier
Slat/fuselage juncture noise or slat horn noise has been identified as a major airframe noise
component and is commonly assumed to be similar to the flap side-edge noise. However …

Three-dimensional identification of flow-induced noise sources with a tunnel-shaped array of MEMS microphones

Y Zhou, V Valeau, J Marchal, F Ollivier… - Journal of Sound and …, 2020 - Elsevier
This paper deals with the development of a three-dimensional (3D) array for imaging
aeraocoustic sources in the open section of an anechoic wind-tunnel, together with the …

Aeroacoustic noise reduction by application of end plates on wall-mounted finite airfoils

E Schneehagen, TF Geyer, E Sarradj, DJ Moreau - Experiments in Fluids, 2021 - Springer
One known method to reduce vortex shedding from the tip of a blade is the use of end plates
or winglets. Although the aerodynamic impact of such end plates has been investigated in …

On the controlled evolution for wingtip vortices of a flap** wing model at bird scale

S Qin, Z Weng, Z Li, Y **ang, H Liu - Aerospace Science and Technology, 2021 - Elsevier
The reduction of wingtip vortices is a critical and challenging task for aircraft wing-design.
Inspired by the wingtip morphology of soaring birds, Whitcomb created winglets to reduce …

Quantitative features of wingtip vortex wandering based on the linear stability analysis

ZP Cheng, SY Qiu, Y **ang, H Liu - AIAA Journal, 2019 - arc.aiaa.org
As a result of vortex instability, wingtip vortex exhibits a behavior of wandering. In the paper,
a canonical wingtip vortex generated by a NACA0015 rectangular wing was experimentally …

Exploitation of hybrid anechoic wind tunnels for aeroacoustic and aerodynamic measurements

K Brown, W Devenport, A Borgoltz - CEAS Aeronautical Journal, 2019 - Springer
The last 10 years have seen the establishment of the hybrid anechoic wind tunnel as a
significant tool for experimental aeroacoustics research. The hybrid anechoic wind tunnel …

A study of the effect of airfoil thickness on the tonal noise generation of finite, wall-mounted airfoils

TF Geyer, DJ Moreau - Aerospace Science and Technology, 2021 - Elsevier
The noise generated by finite, wall-mounted airfoils strongly affects the total noise from
aerodynamic applications such as small unmanned aerial vehicles, micro wind turbines and …

[HTML][HTML] Beamforming based extension of semi-empirical noise modelling for low-speed axial flow fans

T Benedek, J Vad - Applied Acoustics, 2021 - Elsevier
The application of the turbulent boundary layer trailing edge (TBL-TE) noise component of
the semi-empirical Brooks-Pope-Marcolini (BPM) model in an axial flow fan case study is …