Numerical study of sound generation by vortex induced flexible wall vibration

Ting Hui Zheng, Wen Zhong Shen, Shiu Keung Tang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

A numerical viscous/inviscid coupling approach for the calculation of an acoustic field is applied to the case of sound radiation due to the unsteady interaction between an inviscid vortex (which models a turbulent eddy) and a finite length flexible boundary. Based on the unsteady hydrodynamic information from the known incompressible flowfield, the perturbed compressible acoustic terms are calculated. Calculated results are compared with analytical solutions obtained by the method of matched asymptotic expansions. Results suggest that the monopole field created by the volumetric flow induced by the vibration flexible boundary dominates the overall acoustic power radiation. The longitudinal dipole directly due to the transverse vortex acceleration is only important when the vortex is moving over the flexible boundary. This investigation verified the applicability of the viscous/inviscid approach to flow structure-acoustic interaction.
Original languageEnglish
Title of host publicationInstitute of Noise Control Engineering of the USA - 35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006
Pages1599-1605
Number of pages7
Volume3
Publication statusPublished - 1 Dec 2006
Event35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006 - Honolulu, HI, United States
Duration: 3 Dec 20066 Dec 2006

Conference

Conference35th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2006
Country/TerritoryUnited States
CityHonolulu, HI
Period3/12/066/12/06

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this