A Three-Dimensional Numerical Study into Non-Axisymmetric Perturbations of the Hole-Tone Feedback Cycle

M. A. Langthjem, M. Nakano

研究成果: Chapter

抄録

This paper is concerned with the hole-tone feedback cycle problem, also known as Rayleigh's bird-call. A simulation method for analyzing the influence of non-axisymmetric perturbations of the jet on the sound generation is described. In planned experiments these perturbations will be applied at the jet nozzle via piezoelectric or electro-mechanical actuators, placed circumferentially inside the nozzle at its exit. The mathematical model is based on a three-dimensional vortex method. The nozzle and the holed end-plate are represented by quadrilateral vortex panels, while the shear layer of the jet is represented by vortex rings, composed of vortex filaments. The sound generation is described mathematically using the Powell-Howe theory of vortex sound. The aim of the work is to understand the effects of a variety of flow perturbations, in order to control the flow and the accompanying sound generation.

本文言語English
ホスト出版物のタイトルIUTAM Bookseries
出版社Springer Science and Business Media B.V.
ページ581-586
ページ数6
DOI
出版ステータスPublished - 2009

出版物シリーズ

名前IUTAM Bookseries
14
ISSN(印刷版)1875-3507
ISSN(電子版)1875-3493

ASJC Scopus subject areas

  • 土木構造工学
  • 自動車工学
  • 材料科学(全般)
  • 航空宇宙工学
  • 音響学および超音波学
  • 材料力学
  • 機械工学

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