GASDYNAMIC AND ACOUSTIC CHARACTERISTICS OF A SUBSONIC JET-EDGE ROD GENERATOR OF ACOUSTIC RADIATION

The design of a subsonic jet-edge rod generator of the Hartmann-type oscillator and a scheme of measuring its acoustic parameters are presented. In this generator, unlike the Hartmann oscillator, not a cylindrical gas jet but an annular gas jet, moving along the thin cylindrical rod positioned at the axis of the generator nozzle, is used. A parametric investigation of the gasdynamic and acoustic processes arising in the tubular cavity of such a generator as a result of the interaction of a subsonic gas jet with this cavity has been performed with consideration for the nonstationary structure of the gas fl ow in the generator cavity. Recommendations on the choice of the design of a jet-edge rod generator of acoustic radiation with regard for its practical application are given.
   
Author:  K. N. Volkov, V. N. Emel′yanov, A. V. Efremov, and A. I. Tsvetkov
Keywords:  jet-edge rod generator, Hartmann effect, acoustics, subsonic gas jet, generation of sound, amplitudefrequency characteristics
Page:  1179