Accession Number:

ADA165683

Title:

Scattering of an Acoustical Field by a Free Jet Shear Layer (Diffusion d'un Chemp Acoustique par une Zone de Melane de Jet Libre),

Descriptive Note:

Corporate Author:

OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES CHATILLON-SOUS-BAGNEUX (FRANCE)

Personal Author(s):

Report Date:

1985-01-01

Pagination or Media Count:

21.0

Abstract:

This paper deals with scattering of an acoustic field propagating through a large wind-tunnel jet shear layer. For a monochromatic wave, the scattering effects are mainly spectral broadening of the incident peak and amplitude and phase fluctuations of the wave. These effects have been studied both experimentally through a parametric study and theoretically by carrying out analyses based on single scattering methods. The experimental results are compared with predictions deduced from these analyses in which the data concerning the turbulence of the medium have been determined experimentally. Reprints, France.

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE