B-341 プリセッシングジェットの時空間挙動

NDLデジタルコレクション

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タイトル別名
  • Spatiotemporal behavior of the precessing jet

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A continuously unstable precessing flow is formed within a short cylindrical chamber following a large sudden expansion and the jet emerges from nozzle exit leaning and rotating about the nozzle axis. Flow field within the nozzle chamber and the behavior of the external jet have been reported with pressure measurement, visualization and so on. This paper shows characteristics of the precessing jet, a frequency of rotating about the nozzle axis and an angle of emerging jet, using UDM (Ultrasound Doppler Method) which can measure 1-D velocity distribution on a measurement line instantaneously.

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