HYDRODYNAMICS AND ACOUSTICS

2019 ◊ Volume 1 (91) ◊ Issue 4 ◊ p. 449-468

Yu. N. Savchenko^*, Yu. A. Semenov^*, O. I. Naumova^*

^* Institute of Hydromechanics of NAS of Ukraine, Kyiv, Ukraine

Water impact of an expanding cylindrical body

Gidrodin. akust. 2019, 1(4):449-468

TEXT LANGUAGE:English

ABSTRACT

A self-similar flow with the splash jet generated by water entry of an expanding two-dimensional arbitrarily shaped body is studied theoretically based on the incompressible velocity potential theory. The flow is assumed to be irrotational, the liquid to be ideal, and gravity and surface tension are ignored. The solution is obtained in the form of integral equations using the integral hodograph method. It is shown the solution with the detached splash jet exists in all ranges of expansion speeds from zero to infinity. Detailed results in terms of pressure distribution, free surface shape and streamlines, and contact angle of the splash jet are presented.

KEY WORDS

water entry, free surface flow, splash jet

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