Abstract
This paper describes experimental results on the scattering of sound by turbulence in water. The turbulence is created by a 1-in.-diam submerged water jet, nozzle velocity 648 cm/s. The sound frequency is 1 MHz. The spectral broadening of the monochromatic signal (due to the scattering of the sound by the turbulent eddies) is compared for different forward scattering angles in the case of incident plane and cylindrical waves. A theoretical model is presented to explain the plane-wave results. Results for the scattering of cylindrical waves are compared with experiments performed by Candel and Julienne [AIAA Paper No. 76-545, 3rd AIAA Aero-Acoustics Conference, Palo Alto, California (July 20–23, 1976)] in air with spherical wave sources.
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