TY - JOUR
T1 - Study of transonic tone in supersonic nozzle
AU - Jung, Sungjae
AU - Yonamine, Makiko
AU - Kweon, Yonghun
AU - Dodo, Yusuke
AU - Aoki, Toshiyuki
PY - 2008/11
Y1 - 2008/11
N2 - 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 tones'. 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. As for the frequency of the transonic tone, the separated zone was calculated by using a simple flow model by whom the propagate perturbation was considered. The calculation results by the model were corresponding to the present experimental results well.
AB - 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 tones'. 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. As for the frequency of the transonic tone, the separated zone was calculated by using a simple flow model by whom the propagate perturbation was considered. The calculation results by the model were corresponding to the present experimental results well.
UR - http://www.scopus.com/inward/record.url?scp=59649112157&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=59649112157&partnerID=8YFLogxK
U2 - 10.1299/kikaib.74.2352
DO - 10.1299/kikaib.74.2352
M3 - Article
AN - SCOPUS:59649112157
SN - 0387-5016
VL - 74
SP - 2352
EP - 2357
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
IS - 11
ER -