TY - GEN
T1 - Experimental investigation on correlations between transonic tone and flow oscillation in a supersonic nozzle
AU - Shin, Seungyoung
AU - Yonamine, Mkiko
AU - Tokumoto, Akira
AU - Kuguyama, Hiroki
AU - Aoki, Toshiyuki
PY - 2011
Y1 - 2011
N2 - The present paper describes an experimental work to investigate characteristics and generation mechanism of the transonic tone and this work attempts to correlate the transonic tone to flow oscillation from a shock-containing convergent-divergent nozzle. A wall pressure measurement, acoustic measurement and a high speed video camera for Schlieren visualization to visualize shock oscillations are used to investigate the tone generation mechanism. All measurements are set up to get data at the same time. For the conditions of this study the transonic tone takes place in one or two stages or no transonic tone occurs. And it is found that there is close correlation between transonic tone frequency and wall pressure fluctuation or shock oscillation each other when the transonic tone is diffusing from the nozzle.
AB - The present paper describes an experimental work to investigate characteristics and generation mechanism of the transonic tone and this work attempts to correlate the transonic tone to flow oscillation from a shock-containing convergent-divergent nozzle. A wall pressure measurement, acoustic measurement and a high speed video camera for Schlieren visualization to visualize shock oscillations are used to investigate the tone generation mechanism. All measurements are set up to get data at the same time. For the conditions of this study the transonic tone takes place in one or two stages or no transonic tone occurs. And it is found that there is close correlation between transonic tone frequency and wall pressure fluctuation or shock oscillation each other when the transonic tone is diffusing from the nozzle.
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M3 - Conference contribution
AN - SCOPUS:84867943149
SN - 9781618392800
T3 - 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
SP - 425
EP - 429
BT - 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
T2 - 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
Y2 - 4 September 2011 through 7 September 2011
ER -