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- W2317885560 abstract "The present investigation of airfoil trailing edge noise concerns the broadband noise that arises from the interaction of turbulent boundary layers with the airfoil trailing edge and the tonal noise that arises from vortex shedding generated by laminar boundary layers. We address aspects of noise generation and propagation such as the effects of mean flow convection on the calculation of sound directivity, of compressibility and quadrupole sources on sound radiation. Large eddy simulations (LES) are conducted for a NACA0012 airfoil with rounded trailing edge for two flow configurations with different freestream Mach numbers (M1 = 0:115 and 0:4) for an angle of incidence AoA = 5 deg. The Reynolds number based on the airfoil chord is fixed at Rec = 408000. The acoustic predictions are performed by the Ffowcs Williams & Hawkings (FWH) acoustic analogy formulation and incorporate convective effects. Aeroacoustic results are compared to experimental data for a case which presents a broad vortex shedding tone and good agreement is observed." @default.
- W2317885560 created "2016-06-24" @default.
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- W2317885560 date "2014-05-01" @default.
- W2317885560 modified "2023-10-01" @default.
- W2317885560 title "COMPRESSIBILITY EFFECTS ON AIRFOIL TRAILING EDGE NOISE GENERATION AND PROPAGATION" @default.
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- W2317885560 doi "https://doi.org/10.5151/meceng-wccm2012-18222" @default.
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