Open AccessExtended-POD based acoustic analysis of separated aerofoils via simultaneous time-resolved PIV and force measurements
Author(s) -
Douglas William Carter,
Manuel Ferreira,
Bharathram Ganapathisubramani
Publication year - 2021
Publication title -
international symposium on particle image velocimetry.
Language(s) - English
Resource type - Journals
ISSN - 2769-7576
DOI - 10.18409/ispiv.v1i1.140
Subject(s) - acoustics , naca airfoil , particle image velocimetry , reynolds number , chord (peer to peer) , wake , aerodynamics , physics , mechanics , computer science , turbulence , distributed computing
We present a cross-correlation based analysis of the acoustic field generated in the wake of NACA 0012 and NACA 65410 aerofoils at a chord-based Reynolds number Rec = 75000 as obtained from pressure fields reconstructed from a series of planar time-resolved Particle Image Velocimetry (PIV) experiments. The experiments are performed in a water channel facility located at the University of Southampton with an overhead carriage system to allow precise control of the angle of attack α of the aerofoils as well as to mount them to a six-axis force/torque transducer to allow for simultaneous load measurements. Angles of attack in the range 4◦ < α < 17◦ are explored corresponding to a range of conditions from zero flow separation to fully stalled.