Noise control of supersonic cavity flow with upstream mass blowing

Weipeng Li, Taku Nonomura, Kozo Fujii

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

The mechanism and efficiency of noise control in supersonic cavity flows with steady upstream mass blowing are numerically investigated. A slotted jet is placed in the upside of cavity leading edge. The mass blowing is simulated by specifying a vertical velocity ejecting through the slotted jet. The steady upstream mass blowing is an effective approach for the noise suppression in supersonic cavity flows. The strength of the resonant noise and the broadband noise are decreased with a delightful amplitude, that is, approximately 15 dB SPL decrease in the dominant mode and 5 dB SPL decrease in the broadband noise. Two primary mechanisms are addressed for the noise control with steady upstream mass blowing, lifting up of the cavity shear-layer and disruption of shear-layer instability.

本文言語English
ホスト出版物のタイトルProgress in Hybrid RANS-LES Modelling
ホスト出版物のサブタイトルPapers Contributed to the 4th Symposium on Hybrid RANS-LES Methods, Beijing, China, September 2011
出版社Springer Verlag
ページ315-324
ページ数10
ISBN(印刷版)9783642318177
DOI
出版ステータスPublished - 2012
外部発表はい

出版物シリーズ

名前Notes on Numerical Fluid Mechanics and Multidisciplinary Design
117
ISSN(印刷版)1612-2909

ASJC Scopus subject areas

  • 流体および伝熱

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