TY - CONF
T1 - The evolution mechanism of the controlled flow structure of a round jet under acoustic excitation
AU - Chao, Y. C.
AU - Han, J. M.
N1 - Funding Information:
This work was supported by the National Science Council, R,.O.C. Grant No. NSC 77-0401-E006-39. The financial support is gratefully acknowledgcd. The hitfill discussion with Dr. F.B. Hsiao is also acknowledged.
Publisher Copyright:
© 1989 by Yei-Chin Chao.
PY - 1989
Y1 - 1989
N2 - The present work is an experimental study of the shear layer structure in a round jet under axisymmetric acoustic excitations. The excitation level is an important parameter on the jet structure in the excited flow. The induced structure is found to be controlled by the inherent instability, forcing frequency and forcing level. A relation of the induced forcing subharmonic and the forcing frequency is proposed. The relation of the response frequency and the forcing frequency proposed by Ho and Huang [6] for low level excitation is verified and extended to include the excitation level effect. The pairing process (subharmonic evolution) is controlled by the initial response frequency which is dependent on the excitation frequency and the excitation level, and their relation is also proposed.
AB - The present work is an experimental study of the shear layer structure in a round jet under axisymmetric acoustic excitations. The excitation level is an important parameter on the jet structure in the excited flow. The induced structure is found to be controlled by the inherent instability, forcing frequency and forcing level. A relation of the induced forcing subharmonic and the forcing frequency is proposed. The relation of the response frequency and the forcing frequency proposed by Ho and Huang [6] for low level excitation is verified and extended to include the excitation level effect. The pairing process (subharmonic evolution) is controlled by the initial response frequency which is dependent on the excitation frequency and the excitation level, and their relation is also proposed.
UR - http://www.scopus.com/inward/record.url?scp=84991247179&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84991247179&partnerID=8YFLogxK
U2 - 10.2514/6.1989-992
DO - 10.2514/6.1989-992
M3 - Paper
AN - SCOPUS:84991247179
T2 - AIAA 2nd Shear Flow Conference, 1989
Y2 - 13 March 1989 through 16 March 1989
ER -