Investigation on transonic tone in supersonic nozzle

Makiko Yonamine, Jung Sungjae, Toshiyuki Aoki

研究成果: 著書/レポートタイプへの貢献会議での発言

抄録

The present paper describes experimental and numerical works to investigate noise phenomenon in supersonic flow that is discharged from a convergent-divergent nozzle. The noise phenomenon of flow is generated by an emission of 'transonic tone' that can be occurred independently of the general noise components at low pressure ratios that a shock wave arise within the divergent section of the nozzle. The results of obtaining show that the frequency of a transonic tone that differs from the frequency of a screech tone due to the shock-cell structures in a jet, and originates in the shock wave in the nozzle increases in proportion to the nozzle pressure ratio. The transonic tone of high-order has the directivity in the direction of the flow. Also the value of a predominant frequency of the wall static pressure fluctuation in the shock wave downstream is almost corresponding to the value of the frequency in which the transonic tone is shown.

元の言語英語
ホスト出版物のタイトル16th International Congress on Sound and Vibration 2009, ICSV 2009
ページ2672-2678
ページ数7
5
出版物ステータス出版済み - 2009
イベント16th International Congress on Sound and Vibration 2009, ICSV 2009 - Krakow, ポーランド
継続期間: 7 5 20097 9 2009

その他

その他16th International Congress on Sound and Vibration 2009, ICSV 2009
ポーランド
Krakow
期間7/5/097/9/09

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supersonic nozzles
transonic flow
nozzles
shock waves
pressure ratio
screech tones
convergent-divergent nozzles
wall pressure
static pressure
supersonic flow
directivity
proportion
low pressure
shock
cells

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

これを引用

Yonamine, M., Sungjae, J., & Aoki, T. (2009). Investigation on transonic tone in supersonic nozzle. : 16th International Congress on Sound and Vibration 2009, ICSV 2009 (巻 5, pp. 2672-2678)

Investigation on transonic tone in supersonic nozzle. / Yonamine, Makiko; Sungjae, Jung; Aoki, Toshiyuki.

16th International Congress on Sound and Vibration 2009, ICSV 2009. 巻 5 2009. p. 2672-2678.

研究成果: 著書/レポートタイプへの貢献会議での発言

Yonamine, M, Sungjae, J & Aoki, T 2009, Investigation on transonic tone in supersonic nozzle. : 16th International Congress on Sound and Vibration 2009, ICSV 2009. 巻. 5, pp. 2672-2678, 16th International Congress on Sound and Vibration 2009, ICSV 2009, Krakow, ポーランド, 7/5/09.
Yonamine M, Sungjae J, Aoki T. Investigation on transonic tone in supersonic nozzle. : 16th International Congress on Sound and Vibration 2009, ICSV 2009. 巻 5. 2009. p. 2672-2678
Yonamine, Makiko ; Sungjae, Jung ; Aoki, Toshiyuki. / Investigation on transonic tone in supersonic nozzle. 16th International Congress on Sound and Vibration 2009, ICSV 2009. 巻 5 2009. pp. 2672-2678
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