Abstract
The velocity of propagation of toroidal and oblique vortices formed in subsonic and supersonic turbulent jets under longitudinal internal and transverse external excitation by finite-amplitude saw-tooth acoustic waves is studied experimentally. It is demonstrated that the convection velocity of vortices is not constant, and the character of its variation depends on the vortex shape.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
M. A. Herman and J. Jimenez, “Computer analysis of a high-speed film of the plane turbulent mixing layer,” J. Fluid Mech., 119, 323–345 (1982).
A. Roshko, “Structure of turbulent shear flows: A new look,” AIAA J., 14, No. 10, 1349–1357 (1976).
J. Panda, G. Raman, and K. B. M. Q. Zaman, “Underexpanded screeching jets from circular, rectangular and elliptic nozzles,” AIAA Paper No. 97-1623 (1997).
J. A. Hay and E. G. Rose, “In flight shock cell noise,” J. Sound Vibr., 11, 411–420 (1970).
A. Powell, Y. Umeda, and R. Ishii, “Observation of oscillation modes of choked circular jets,” J. Acoust. Soc. Amer., 92, No. 5, 2823–2836 (1992).
V. G. Pimshtein, “Sound waveform effect on disturbance generation in turbulent jets at aeroacoustic interaction,” AIAA J., 41, No. 11, 2294–2297 (2003).
V. G. Pimshtein, “On structure and noise of a supersonic jet under internal acoustic excitation,” AIAA J., 44, No. 5, 1103–1106 (2006).
J. E. Ffowcs Williams, “Impulsive sources of aerodynamic sound. Mechanisms of noise generation,” in: Proc. AGARD Conf. on Noise Mechanics, No. 131, Brussels (1973).
Author information
Authors and Affiliations
Additional information
__________
Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 48, No. 5, pp. 21–25, September–October, 2007.
Rights and permissions
About this article
Cite this article
Pimshtein, V.G. Disturbance convection velocity in turbulent jets under aeroacoustic excitation. J Appl Mech Tech Phys 48, 636–640 (2007). https://doi.org/10.1007/s10808-007-0081-0
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/s10808-007-0081-0