A detailed computational aeroacoustic analysis of a high-lift flowfield is performed. Time-accurate Reynolds averaged Navier-Stokes computations simulate the free shear layer that originates from the slat cusp. Both unforced and forced cases are studied. Preliminary results show that the shear layer is a good amplifier of disturbances in the low- to midfrequency range. The Ffowcs Williams and Hawkings equation is solved to determine the acoustic field using the unsteady flow data from the Reynolds averaged Navier-Stokes calculations. The noise radiated from the excited shear layer has a spectral shape qualitatively similar to that obtained from measurements in a corresponding experimental study of the high-lift system.
Time-accurate simulations and acoustic analysis of slat free shear layer
Numerische Simulation der zeitlichen Entwicklung und der Schallemission der freien Scherströmung an einem Vorflügel
AIAA Journal ; 40 , 7 ; 1284-1291
2002
8 Seiten, 15 Bilder, 1 Tabelle, 18 Quellen
Article (Journal)
English
FLUID DYNAMICS - Time-Accurate Simulations and Acoustic Analysis of Slat Free Shear Layer
Online Contents | 2002
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