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Published in: Journal of Visualization 2/2011

01-06-2011 | Regular Paper

Influence of head shape of solid body plunging into water on splash formation

Authors: Yoshihiro Kubota, Osamu Mochizuki

Published in: Journal of Visualization | Issue 2/2011

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Abstract

We experimentally investigated the influence of a head shape of a solid body plunging into water on splash formation. Three different head shapes were tested: a hemisphere, cone, and circular cylinder. A hemisphere as a tail shape is common to all three head shapes. We captured images of splash formation using a high-speed CMOS camera. We found that a film flow generated at an early stage when a body impacts the water surface influences subsequent events until the splash sequence is completed. We explain the origin of the film flow according to the principle of conservation of momentum. The film flow as the primary splash originates from water displaced by the head. The meridian line, which connects the head to the tail of the body, affects separation of the film flow and causes the secondary splash. The air cavity generated when the body plunges into the water is also influenced by the head shape. The tertiary splash is formed by a reaction of the air cavity, which is detached from the body. We found that the secondary dome-type splash obstructs growth of the tertiary splash. Thus, we conclude that the head shape affects all events of the splash.

Graphical Abstract

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Metadata
Title
Influence of head shape of solid body plunging into water on splash formation
Authors
Yoshihiro Kubota
Osamu Mochizuki
Publication date
01-06-2011
Publisher
Springer-Verlag
Published in
Journal of Visualization / Issue 2/2011
Print ISSN: 1343-8875
Electronic ISSN: 1875-8975
DOI
https://doi.org/10.1007/s12650-011-0071-4

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