Noise control of supersonic cavity flow with upstream mass blowing

Weipeng Li, Taku Nonomura, Kozo Fujii

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationProgress in Hybrid RANS-LES Modelling
Subtitle of host publicationPapers Contributed to the 4th Symposium on Hybrid RANS-LES Methods, Beijing, China, September 2011
PublisherSpringer Verlag
Pages315-324
Number of pages10
ISBN (Print)9783642318177
DOIs
Publication statusPublished - 2012
Externally publishedYes

Publication series

NameNotes on Numerical Fluid Mechanics and Multidisciplinary Design
Volume117
ISSN (Print)1612-2909

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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