A measurement of disturbance propagation in high-speed flow by a laser induced fluorescence method (Application to a supersonic cavity flow)

Masahiro Inoue, Takashi Muraishi, Shusaku Kajiyama, Masato Furukawa, Mitsuharu Masuda

Research output: Contribution to journalArticle

Abstract

A method for measuring propagation of disturbance in a high-speed flow has been developed by using a laser-induced fluorescence (LIF) technique. A cross-correlation function between the time- dependent LIF signal and a pressure sensor signal at a reference point enables to measure a propagation speed of disturbance. Through a bandpass filter, the speed of disturbance with a particular frequency can be obtained. A feature of disturbance propagation can be grasped by drawing maps for the cross-correlation coefficients on a space at successive delay-times and making an animation. The method was applied to a supersonic flow over a rectangular cavity with length to depth ratio of 2, to elucidate feedback mechanisms of self-sustaining flow oscillation with several dominant frequencies.

Original languageEnglish
Pages (from-to)948-954
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume65
Issue number631
DOIs
Publication statusPublished - Jan 1 1999

Fingerprint

cavity flow
laser induced fluorescence
disturbances
Fluorescence
high speed
propagation
Lasers
Drawing (graphics)
cross correlation
Supersonic flow
Pressure sensors
Bandpass filters
Animation
animation
supersonic flow
sustaining
Time delay
pressure sensors
bandpass filters
correlation coefficients

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

A measurement of disturbance propagation in high-speed flow by a laser induced fluorescence method (Application to a supersonic cavity flow). / Inoue, Masahiro; Muraishi, Takashi; Kajiyama, Shusaku; Furukawa, Masato; Masuda, Mitsuharu.

In: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 65, No. 631, 01.01.1999, p. 948-954.

Research output: Contribution to journalArticle

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