[HTML][HTML] Evaluation of the effect of microphone cavity geometries on acoustic imaging in wind tunnels
Aeroacoustic measurements performed by flush-mounted microphone arrays on the walls of
closed-section wind tunnels are contaminated by the hydrodynamic pressure fluctuations of …
closed-section wind tunnels are contaminated by the hydrodynamic pressure fluctuations of …
Theoretical analysis of the DAMAS algorithm and efficient implementation of the covariance matrix fitting method for large-scale problems
G Chardon, J Picheral, F Ollivier - Journal of Sound and Vibration, 2021 - Elsevier
Based on a theoretical analysis of the DAMAS algorithm, proposed by Brooks and
Humphreys to locate and quantify acoustic sources accurately, the paper proposes an …
Humphreys to locate and quantify acoustic sources accurately, the paper proposes an …
Assessment and comparison of the performance of functional projection beamforming for aeroacoustic measurements
RM Martinez, G Herold, M Snellen… - 8th Berlin …, 2020 - research.tudelft.nl
Abstract Functional Projection Beamforming (FPB) is a method proposed by Dougherty in
2019, based on functional beamforming. It yields the integrated sound spectrum for a given …
2019, based on functional beamforming. It yields the integrated sound spectrum for a given …
Deconvolution algorithms of phased microphone arrays for the mapping of acoustic sources in an airframe test
J Wang, W Ma - Applied Acoustics, 2020 - Elsevier
Beamforming methods with phased microphone arrays are widely used for the
characterization of acoustic sources. Compared with conventional beamforming …
characterization of acoustic sources. Compared with conventional beamforming …
Reduction of tonal noise of a NACA 0012 airfoil by roughness elements
View Video Presentation: https://doi. org/10.2514/6.2023-3494. vid An array of cylindrical
roughness elements was used to reduce the tonal noise introduced by the separation …
roughness elements was used to reduce the tonal noise introduced by the separation …
Time–frequency characteristics of noise generated from different slat and flap geometrical configurations of the high-lift device
L Li, P Liu, H Guo - Applied Acoustics, 2022 - Elsevier
High-lift device installed on modern large aircraft is a major noise source during the
approach and landing phases. For high-lift device, slat and flap parameters such as gap …
approach and landing phases. For high-lift device, slat and flap parameters such as gap …
Airfoil tonal noise reduction by roughness elements Part I--Experimental investigation
Laminar separation bubbles around airfoils lead to the growth of instability waves, which
enhances to acoustic scattering at the trailing-edge, forming a feedback loop that produces …
enhances to acoustic scattering at the trailing-edge, forming a feedback loop that produces …
The low acoustic noise and turbulence wind tunnel of the University of Sao Paulo
FR Amaral, JCS Rico, CS Bresci, MM Beraldo… - The Aeronautical …, 2022 - cambridge.org
This paper introduces the Low Acoustic Noise and Turbulence (LANT) wind tunnel of the
Sao Carlos School of Engineering, University of Sao Paulo (USP-EESC), Brazil. The closed …
Sao Carlos School of Engineering, University of Sao Paulo (USP-EESC), Brazil. The closed …
New insights on slat noise based on a revisit of previous experimental-numerical studies
The leading-edge slat has been identified as a relevant noise source since the 1970's.
However, many issues regarding the noise generation mechanisms and the appropriate …
However, many issues regarding the noise generation mechanisms and the appropriate …