TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
Online ISSN : 1884-8354
ISSN-L : 1884-8354
Regular Paper
Mechanism of Self-Excited Vibration of a Falling Water Sheet
Hiroki MORITakuo NAGAMINERyo ITOYuichi SATO
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JOURNAL FREE ACCESS

2012 Volume 78 Issue 792 Pages 2720-2732

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Abstract

This paper describes experimental and analytical study on the behavior of a falling water sheet. The observation of water sheet displacement and air pressure variation in the chamber implies that one of the causes of oscillation is downward squeeze action of a water sheet on an air chamber. We propose a simplified analytical model. Analytical results agree well with experimental ones. Further analytical results explain the occurrence of multiple modes of oscillation in a condition. In addition, we explain the instability mechanism using the work done by a falling water sheet on an enclosed chamber.

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© 2012 The Japan Society of Mechanical Engineers
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