Effect of turbulence on sound radiation by vortex-body interaction

Ting Hui Zheng, Georgios H. Vatistas, Shiu Keung Tang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

This study examines the sound generated by the interaction between turbulent vortices and solid bodies, and its propagation in a nonuniform flow. Single vortex encounters with a flat plate and a nonrotating cylinder are considered. The solutions show that as the turbulence intensity increases, the sound radiated by the vortex-body interaction is strengthened while the effect of the mean flow speed on the sound waves weakens. The sound profile and sound directivity do not change with the Reynolds number. Neglecting turbulence in vortices will not affect the prediction of the fundamental properties of the radiated sound waves; however, it will underestimate the magnitude of the produced sound.
Original languageEnglish
Pages (from-to)71-81
Number of pages11
JournalJournal of Computational Acoustics
Volume17
Issue number1
DOIs
Publication statusPublished - 1 Mar 2009

Keywords

  • Sound radiation
  • Vortex model
  • Vortex-body interaction

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Applied Mathematics

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