Departmental Bulletin Paper 片ポートを有するフリップフロップ・ジェット・ノズルによる発振機構の実験的研究
カタポート オ ユウスル フリップ フロップ・ジェット・ノズル ニヨル ハッシン キコウ ノ ジッケンテキ ケンキュウ
Experimental study of oscillation mechanism using a flip-flop jet nozzle with a single port

井上, 達哉  ,  永幡, 史暁  ,  平田, 勝哉  ,  イノウエ, タツヤ  ,  ナガハタ, フミアキ  ,  ヒラタ, カツヤ  ,  Inoue, Tatsuya  ,  Nagahata, Fumiaki  ,  Hirata, Katsuya

57 ( 2 )  , pp.118 - 124 , 2016-07-31 , 同志社大学ハリス理化学研究所 , Transcription:ドウシシャ ダイガク ハリス リカガク ケンキュウジョ , Alternative:Harris Science Research Institute of Doshisha University
To reveal the oscillation mechanism of a flip-flop-jet nozzle with a connecting tube, the authors carry out the measurements of pressures and velocities in the connecting tube and inside the nozzle, varying various geometric parameters. According to our previous work (Inoue et al., 2016), the authors assume that the jet switches when a time integral reaches a certain value. As the time integral, we consider the accumulated flow work of pressure, namely, the time integral of mass flux through a connecting tube into the jet-reattaching wall from the opposite jet-un-reattaching wall. In the present study, in order to discuss the physics of the accumulated flow work further, we conduct the experiment in single-port control where the inflow from the control port on the jet-reattaching wall is forcedly controlled and the other control port on the opposite jet-un-reattaching wall is sealed, instead of the experiment in regular jet’s oscillation using the ordinary nozzle with two control ports in connection. As a result, the accumulated flow work of the inflow until the jet’s switching well agrees with that in regular jet’s oscillation using the ordinary nozzle.

Number of accesses :  

Other information