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  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.
|Publication status||Published - 1989|
|Event||AIAA 2nd Shear Flow Conference, 1989 - Tempe, United States|
Duration: 1989 Mar 13 → 1989 Mar 16
|Other||AIAA 2nd Shear Flow Conference, 1989|
|Period||89-03-13 → 89-03-16|
All Science Journal Classification (ASJC) codes