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Impulsive impact of a body fully submerged in an open container

Published online by Cambridge University Press:  16 January 2023

Y.N. Savchenko ,
B.-Y. Ni Open the ORCID record for B.-Y. Ni [Opens in a new window] ,
G.Y. Savchenko  and
Y.A. Semenov Open the ORCID record for Y.A. Semenov [Opens in a new window]
Y.N. Savchenko
Affiliation:
National Academy of Sciences of Ukraine, Institute of Hydromechanics, Kyiv 03057, Ukraine
B.-Y. Ni
Affiliation:
College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, PR China
G.Y. Savchenko
Affiliation:
National Academy of Sciences of Ukraine, Institute of Hydromechanics, Kyiv 03057, Ukraine
Y.A. Semenov*
Affiliation:
National Academy of Sciences of Ukraine, Institute of Hydromechanics, Kyiv 03057, Ukraine College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, PR China
*
†Email address for correspondence: [email protected]
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Abstract

An impulsively starting motion of a cylindrical body submerged below a calm water surface in an open container of arbitrary shape is considered. This work generalizes the case of an infinite-depth liquid studied by Semenov et al. (J. Fluid Mech., vol. 919, 2021, R4). Particular attention is paid to the interaction between the body, the free surface and the container. The integral hodograph method is employed to derive the complex velocity potential in a parameter plane. The boundary-value problem is reduced to a system of integral equations, which is solved numerically. The velocity field, the pressure impulse on the body and the container wall and the added mass just after the impact are determined for a wide range of depths of submergence and container geometries and for various cross-sectional shapes of the body, such as a flat plate, a circle and a rectangle.

JFM classification

Waves/Free-surface Flows: Channel flow
Type
JFM Papers
Information
Journal of Fluid Mechanics , Volume 955 , 25 January 2023 , A28
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Copyright
© The Author(s), 2023. Published by Cambridge University Press

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References

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