[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 …

Uncertainty quantification in particle image velocimetry

A Sciacchitano - Measurement Science and Technology, 2019‏ - iopscience.iop.org
Particle image velocimetry (PIV) has become the chief experimental technique for velocity
field measurements in fluid flows. The technique yields quantitative visualizations of the …

[كتاب][B] Wind energy engineering: a handbook for onshore and offshore wind turbines

T Letcher - 2023‏ - books.google.com
Wind Energy Engineering: A Handbook for Onshore and Offshore Wind Turbines, Second
Edition continues to be the most advanced, up-to-date and research-focused text on all …

Noise reduction mechanisms of sawtooth and combed-sawtooth trailing-edge serrations

F Avallone, WCP Van Der Velden, D Ragni… - Journal of Fluid …, 2018‏ - cambridge.org
Trailing-edge serrations are add ons retrofitted to wind-turbine blades to mitigate turbulent
boundary-layer trailing-edge noise. This manuscript studies the physical mechanisms …

Experimental characterization of the turbulent boundary layer over a porous trailing edge for noise abatement

AR Carpio, RM Martínez, F Avallone, D Ragni… - Journal of Sound and …, 2019‏ - Elsevier
The hydrodynamic and acoustic fields for a NACA 0018 with solid and porous trailing edge
inserts are investigated. The porous inserts, covering 20% of the chord, are manufactured …

Noise reduction mechanisms of an open-cell metal-foam trailing edge

C Teruna, F Manegar, F Avallone, D Ragni… - Journal of Fluid …, 2020‏ - cambridge.org
Open-cell porous materials have been reported as a promising concept for mitigating
turbulent boundary-layer trailing-edge noise. This manuscript examines the aeroacoustics of …

Three-dimensional flow field over a trailing-edge serration and implications on broadband noise

F Avallone, S Pröbsting, D Ragni - Physics of Fluids, 2016‏ - pubs.aip.org
The three-dimensional flow field over the suction side of a NACA 0018 airfoil with trailing-
edge serrations was studied by means of time-resolved tomographic particle image …

Benefits of curved serrations on broadband trailing-edge noise reduction

F Avallone, WCP Van der Velden, D Ragni - Journal of Sound and Vibration, 2017‏ - Elsevier
Far-field noise and flow field over a novel curved trailing-edge serration (named as iron-
shaped serration) are investigated. Spectra of the far-field broadband noise, directivity plots …

A study of the effect of serration shape and flexibility on trailing edge noise

P Zhou, Q Liu, S Zhong, Y Fang, X Zhang - Physics of Fluids, 2020‏ - pubs.aip.org
In this study, we investigated the performance of flexible trailing edge serrations of various
shapes for airfoil self-noise reduction through anechoic wind tunnel experiments. A flat plate …

Effects of trailing-edge serration shape on airfoil noise reduction with zero incidence angle

YS Hu, PJY Zhang, ZH Wan, NS Liu, DJ Sun, XY Lu - Physics of Fluids, 2022‏ - pubs.aip.org
When controlling the trailing-edge (TE) interference noise of airfoil, the design of the TE
serration shape is still an open issue. To this end, the flow and noise generation for different …