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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.1

ISSN Печать: 1065-3090
ISSN Онлайн: 1940-4336

Выпуски:
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Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v17.i4.70
pages 359-369

ELEMENTAL STRUCTURE OF SPLASH GENERATED BY A PLUNGING SOLID BODY

Yoshihiro Kubota
Graduate School of Engineering, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585, Japan
Osamu Mochizuki
Faculty of Science and Engineering, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585, Japan

Краткое описание

The objective of this study is to understand effects of the shape of a plunging body on splash. The splash was formed in the following steps: the primary (film type), secondary (mushroom type), and tertiary (rebound type) splashes. The primary splash as a first step influences the following process. Thus, we changed experience of the primary splash by changing the body shape to investigate its effects on formation of the splash. A hemisphere was common in the head of the bodies but tails had the following three shapes: a hemisphere, cone, and cylinder. We selected these shapes in order to make them have different connecting longitudinal lines at the joint between the hemisphere head and tail. Thus, the line affected the development of the primary splash as a film flow (primary splash) along the wall. The film flow covered the hemisphere head at first and moved to different ways related to the tail shape of the tested body. The detachment or adherence of the film flow affected the formation of the secondary splash. We observed a mushroom type splash in the case of the sphere (hemisphere head connecting a hemisphere tail), mushroom on an air-dome (bubble on the water surface) in the cases of the bodies with cylinder and cone tails. We discussed these different secondary splashes related to the primary splash in this paper.