Sound Suppression of Laminar Separating Flow over Cavity Sound Suppression of Laminar Separating Flow over Cavity(<Special Issue>Jets, Wakes and Separated Flows)

    • MAITA Hiroshi
    • Department of Mechanical Systems and Design, Tohoku University
    • XIONG Ao-Kui
    • Department of Mechanical Systems and Design, Tohoku University
    • FUKUNISHI Yu
    • Department of Mechanical Systems and Design, Tohoku University

Abstract

A passive control of aerodynamic noise generated by a laminar separating flow over a cavity is carried out in a wind tunnel test and by numerical simulation, using a thin plate inserted into the cavity as a passive flow-controlling device. In the experiment, a noise suppression effect up to 14dB is achieved by placing a plate in a proper location. It is shown that a plate of smaller vertical size is more effective. In the numerical simulation, it is shown that the location where the shear layer rolls up and the path of vortices are both very sensitive to plate position.

Journal

JSME international journal. Ser. B, Fluids and thermal engineering   [List of Volumes]

JSME international journal. Ser. B, Fluids and thermal engineering 49(4), 1092-1097, 2006-11-15  [Table of Contents]

The Japan Society of Mechanical Engineers

References:  9

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Codes

  • NII Article ID (NAID) :
    110004850807
  • NII NACSIS-CAT ID (NCID) :
    AA10888815
  • Text Lang :
    ENG
  • Article Type :
    ART
  • ISSN :
    13408054
  • NDL Article ID :
    8535837
  • NDL Source Classification :
    ZN11(科学技術--機械工学・工業)
  • NDL Call No. :
    Z53-Y271
  • DOI :
    10.1299/jsmeb.49.1092
  • Databases :
    CJP  NDL  NII-ELS  IR  J-STAGE