Print Email Facebook Twitter Aeroacoustic Investigation of Beveled Trailing Edges by High-Speed Particle Image Velocimetry Title Aeroacoustic Investigation of Beveled Trailing Edges by High-Speed Particle Image Velocimetry Author Gupta, Abhineet (TU Delft Aerospace Engineering) Contributor Scarano, Fulvio (mentor) Ragni, Daniele (mentor) Kotsonis, Marios (mentor) Pröbsting, Stefan (mentor) Degree granting institution Delft University of Technology Programme Aerospace Engineering | Aerodynamics and Wind Energy Date 2013-08-30 Abstract The aerodynamic noise generated by trailing edge of aircraft wings at take-o_ and approach con_guration continues to be a critical factor in the future development of aviation. Trailing edge noise is also a serious concern for wind turbines, marine propellers, helicopter rotors, axial and centrifugal turbines and compressors. A fundamental understanding of how the energy contained in turbulent motions around trailing edges is converted to sound will be bene_cial for designing silent airfoils and control surfaces. Current research aims at applying new tools of ow _eld interrogation i.e. high-speed planar and tomographic PIV to the canonical problem of trailing edge noise. In analytical models, the far _eld noise can be described using turbulent quantities like the spanwise coherence. The use of high-speed tomographic PIV creates a link between the phenomenological description of the ow and acoustic _eld in terms of coherence of structures and noise. The geometric con_guration used involves an airfoil with an elliptic leading edge and an asymmetric beveled trailing edge with 25 deg tip angle (_) and three di_erent radii of curvature (R). The measurements are taken at four di_erent Reynolds numbers. To reference this document use: http://resolver.tudelft.nl/uuid:219076b2-e886-4370-b4ae-2d0e2ad8d2ac Part of collection Student theses Document type master thesis Rights © 2013 Abhineet Gupta Files PDF Gupta_A..pdf 15.21 MB Close viewer /islandora/object/uuid:219076b2-e886-4370-b4ae-2d0e2ad8d2ac/datastream/OBJ/view