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Global capillary instability of an inclined jet

Published online by Cambridge University Press:  10 September 1997

P. A. YAKUBENKO
P. A. YAKUBENKO
Affiliation:
Department of Hydraulic Engineering, The Royal Institute of Technology, 100 44 Stockholm, Sweden
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Abstract

The primary goal of the paper is to demonstrate that a circular jet of inviscid liquid, which issues from a nozzle at an angle to the gravitational field, can sustain a self-excited linear global mode. The mode is found for the flow that is locally convectively unstable at every point, i.e. has no region of local absolute instability. A simple experiment shows that the mode can evolve into a wave of finite amplitude, which is localized in space near the nozzle.

Section 2 of the paper summarizes some recent developments in the linear theory of stability of weakly inhomogeneous flows.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 346 , 10 September 1997 , pp. 181 - 200
Copyright
© 1997 Cambridge University Press

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