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Vortex Generation and Aeroacoustics in Asymmetric Wakes
(2015-01-01)
High-lift devices in an aircraft are important sound generators. These devices should be studied in order to further reduce overall aircraft noise. The high-lift devices operating at a high angle of attack promote the ...
Experimental aeroacoustic study of noise reduction devices for UAVsEstudo aeroacústico experimental de dispositivos de redução de ruído para VANTs
(Universidade Federal de UberlândiaBrasilEngenharia Aeronáutica, 2018)
The low acoustic noise and turbulence wind tunnel of the University of Sao Paulo
(2021-01-01)
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-loop wind tunnel features several devices to ...
Numerical Solution Of Acoustic Scattering By Finite Perforated Elastic Plates
(Royal SocLondon, 2016)
Acoustic Imaging of In-Duct Aeroengine Noise Sources Using Rotating Beamforming and Phased Arrays
(Ieee-inst Electrical Electronics Engineers Inc, 2017-09-01)
An in-duct rotating beamforming technique, using a wall-mounted array of microphones placed within a long duct, was developed for locating broadband noise sources from an aeroengine fan. The technique was experimentally ...
Dynamics of the large-scale structures and associated noise emission in airfoil slats
(Cambridge Univ Press, 2019-09-25)
We investigate the slat narrowband peak noise generating mechanism. Unsteady flow data were generated by a lattice-Boltzmann-based commercial code for four configurations, accounting for variations of the airfoil angle of ...
SPOD analysis of noise-generating Rossiter modes in a slat with and without a bulb seal
(2021-01-01)
The slat represents an important airframe noise source as it extends over almost the entire aircraft wingspan. Most studies of slat noise consider idealized geometries. However, for practical applications, several elements ...
Spanwise-coherent hydrodynamic waves around flat plates and airfoils
(2021-11-25)
We investigate spanwise-coherent structures in the turbulent flow around airfoils, motivated by their connection with trailing-edge noise. We analyse well-resolved large-eddy simulations (LES) of the flow around NACA 0012 ...