Dataset on tip vortex formation noise produced by wall-mounted finite airfoils with sinusoidal and porous tip geometries

Tingyi Zhang; Danielle Moreau; Thomas Geyer; Jeoffrey Fischer; Con Doolan

doi:10.1016/j.dib.2020.105471

Dataset on tip vortex formation noise produced by wall-mounted finite airfoils with sinusoidal and porous tip geometries

Data Brief. 2020 Apr 6:30:105471. doi: 10.1016/j.dib.2020.105471. eCollection 2020 Jun.

Authors

Tingyi Zhang¹, Danielle Moreau¹, Thomas Geyer², Jeoffrey Fischer¹, Con Doolan¹

Affiliations

¹ The University of New South Wales, Sydney, NSW 2052, Australia.
² Brandenburg University of Technology Cottbus-Senftenberg, Cottbus 03046, Germany.

Abstract

Airfoil tip vortex formation noise is a significant noise source in many aerodynamic applications such as aircraft, fans, rotors and propellers. The data collection presented in this paper examines the effects of sinusoidal geometry and porosity on the tip vortex formation noise produced by finite length airfoils. The use of serrated and porous materials is inspired by silent owl-wings and is a promising approach to control flow-induced noise. Noise measurements have been taken using a 47-channel planar microphone array in the anechoic wind tunnel at the Brandenburg University of Technology. Over 2600 unique test cases with variations in sinusoidal tip geometry (amplitude and wavelength) and flat tip porosity were measured during the experimental campaign for a NACA0012 and NACA614 airfoil. The microphone data have been processed using acoustic beamforming software named Acoular to produce one-third-octave band tip noise spectra.

Keywords: Aeroacoustics; Airfoil noise; Beamforming; Wingtip.