TY - JOUR
T1 - A measurement of disturbance propagation in high-speed flow by a laser induced fluorescence method (Application to a supersonic cavity flow)
AU - Inoue, Masahiro
AU - Muraishi, Takashi
AU - Kajiyama, Shusaku
AU - Furukawa, Masato
AU - Masuda, Mitsuharu
PY - 1999
Y1 - 1999
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=71249150497&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=71249150497&partnerID=8YFLogxK
U2 - 10.1299/kikaib.65.948
DO - 10.1299/kikaib.65.948
M3 - Article
AN - SCOPUS:71249150497
VL - 65
SP - 948
EP - 954
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 631
ER -