Study on transonic tone in an axisymmetric supersonic nozzle

M. Yonamine, S. Jung, Toshiyuki Aoki

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper describes experimental and numerical works to investigate noise phenomenon in supersonic flow discharged from a convergent-divergent nozzle. The noise phenomenon of flow is generated by an emission of 'transonic tones'. The results obtained 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 high-order transonic tone has the directivity in the direction of the flow. As for the transonic tone's frequency, the separated zone was calculated by using a simple flow model considering the propagating perturbation. The results of the model corresponded to the results of this experiment well.

Original languageEnglish
Pages (from-to)397-401
Number of pages5
JournalJournal of Thermal Science
Volume19
Issue number5
DOIs
Publication statusPublished - Oct 1 2010

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

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Study on transonic tone in an axisymmetric supersonic nozzle. / Yonamine, M.; Jung, S.; Aoki, Toshiyuki.

In: Journal of Thermal Science, Vol. 19, No. 5, 01.10.2010, p. 397-401.

Research output: Contribution to journalArticle

Yonamine, M. ; Jung, S. ; Aoki, Toshiyuki. / Study on transonic tone in an axisymmetric supersonic nozzle. In: Journal of Thermal Science. 2010 ; Vol. 19, No. 5. pp. 397-401.
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