Unstable Asymmetric Modes of a Liquid Jet

[+] Author and Article Information
S. X. Shi, D. G. Xi, J. R. Qin, N. Liu

National Engine Combustion Laboratory, Tianjin University, Tianjin 300072, P. R. China

G. C. Shu

Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70802

J. Fluids Eng 121(2), 379-383 (Jun 01, 1999) (5 pages) doi:10.1115/1.2822217 History: Received March 20, 1997; Revised December 21, 1998; Online January 22, 2008


This paper reports the results of a linear instability analysis for a viscous liquid jet injecting into a quiescent inviscid gas medium with three-dimensional disturbances. A dispersion equation that accounts for the growth of asymmetric waves is derived, and the maximum rates of growth of various modes are calculated. The asymmetric breakup phenomenon of the jet and its structures at different modes is also studied by using a high-speed multi-frame holographic system. The theoretical predictions agree well with the experimental observations. The results of this study thus confirm the existence and even domination of unstable asymmetric modes under certain physical conditions in the breakup process.

Copyright © 1999 by The American Society of Mechanical Engineers
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