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首页> 外文期刊>journal of ocean engineering and marine energy >Wave interaction with multiple bodies bottom-mounted on an undulated seabed using an exact DtN artificial boundary condition
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Wave interaction with multiple bodies bottom-mounted on an undulated seabed using an exact DtN artificial boundary condition

机译：Wave interaction with multiple bodies bottom-mounted on an undulated seabed using an exact DtN artificial boundary condition

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摘要

For the interaction between ocean wave and bottom-mounted structures, it is often required to introduce an artificial interface by which the fluid domain unbounded horizontally is divided into an interior subdomain with finite volume and an exterior one, to focus on the structures and the interior fluid subdomain only. In this paper, an artificial circular cylindrical surface and a novel Dirichlet-to-Neumann (DtN) map on it are suggested to close the constitutive equations in the interior subdomain since the top and bottom faces of the interior subdomain satisfy free surface condition and seabed condition, respectively. The DtN map is used as a boundary condition of the problem for the interior subdomain, which will be solved using the method of boundary integral equation (BIE). Upon successful validation for a bottom-mounted circular cylinder, the present method is extended to the cases of a single rounded-rectangular cylinder and an array of four cylinders mounted on a flat or undulated seabed to obtain three-dimensional wave elevation around them and to study the effects of fillet radius and incident angle on the wave force acting on each cylinder.

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