Propagation of spinning acoustic modes in partially choked converging ducts

TR Number

Date

1982-04-01

Journal Title

Journal ISSN

Volume Title

Publisher

Acoustical Society of America

Abstract

A computer model based on the wave-envelope technique is used to study the propagation of spinning acoustic modes in converging hard-walled and lined circular ducts carrying near sonic mean flows. The results show that with increasing spinning mode number the intensification of the acoustic signal at the throat decreases for upstream propagation. The influence of the throat Mach number, frequency, boundary-layer thickness, and liner admittance on the propagation of spinning modes is considered. 1982 Acoustical Society of America

Description

Keywords

Acoustic modeling, Acoustic signal processing, Computer modeling, Duct flows, Mach numbers

Citation

Nayfeh, A. H., Kelly, J. J., & Watson, L. T. (1982). Propagation of spinning acoustic modes in partially choked converging ducts. Journal of the Acoustical Society of America, 71(4), 796-802. doi: 10.1121/1.387605