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The generation of capillary instabilities on a liquid jet

Published online by Cambridge University Press:  21 April 2006

S. J. Leib
Affiliation:
NASA Lewis Research Center, Cleveland, OH 44135, USA
M. E. Goldstein
Affiliation:
NASA Lewis Research Center, Cleveland, OH 44135, USA

Abstract

The coupling between imposed disturbances and capillary instabilities on a liquid jet is examined. It is shown that in most physical situations the forcing produces neutral waves which can then turn into growing waves as the profile relaxes or may be amplified nonlinearly by a mechanism of the type considered by Akylas & Benney (1980). The effectiveness of the coupling is expressed quantitatively by numerically computed values of the ‘coupling coefficient’.

Type
Research Article
Copyright
© 1986 Cambridge University Press

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