Abstract
Experimantal evidence that low-frequency sound up to 2 kHz attenuates after propagation through a turbulent field is described. A wave packet of duration 2 msec is passed through a turbulent jet of air flowing perpendicular to the incident wave. The attenuation constant is proportional to the jet velocity and the dependence of the attenuation on the frequency of the incident wave is measured. The result is compared with a phenomenological analysis in terms of an equivalent turbulent friction drag and a modification of the analysis is proposed. Subject Classification: 28.60.
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