金網に衝突する噴流せん断層の自励振動  [in Japanese] Self-Excited Oscillation in a Shear Layer with an Axisymmetric Jet Impinging upon a Screen  [in Japanese]

Search this Article

Author(s)

Abstract

This paper is conerned with the self-excited oscillation in a shear layer of an axisymmetric jet when a fine screen is placed normal to the axis of the jet. The diameter of the nozzle exit is 28 mm and the exit velocity is 10.4 m/s corresponding to Reynolds number 1.99×10^4. Screens with three different mesh sizes are employed. In the experiment the screen is moved in the direction of the jet axis. The shear layer starts to oscillate periodically and simultaneously a pure tone is generated due to the impingement of the jet upon the screen. The frequency varies in the same way as in the jetring system. It is recognized that the configuration of the peaks in the velocity spectrum reflects that of the peaks in the sound spectrum. After passing through the screen, the periodic oscillation in the velocity remains at the location twice the nozzle diameter away from the screen.

Journal

  • Transactions of the Japan Society of Mechanical Engineers. Series B.

    Transactions of the Japan Society of Mechanical Engineers. Series B. 00062(00599), 2612-2618, 1996-07-25

    The Japan Society of Mechanical Engineers

References:  7

Cited by:  2

Codes

  • NII Article ID (NAID)
    110002394977
  • NII NACSIS-CAT ID (NCID)
    AN00187441
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03875016
  • NDL Article ID
    4003051
  • NDL Source Classification
    ZN11(科学技術--機械工学・工業)
  • NDL Call No.
    Z16-109
  • Data Source
    CJP  CJPref  NDL  NII-ELS 
Page Top