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发表时间：2022-10-06

发表刊物：力学学报

所属单位：建设工程学部

期号：6

页面范围：767-775

ISSN号：0459-1879

摘要：A two-dimensional time-domain coupled numerical model is developed to calculate the nonlinear wave forces acting on a ship section against vertical quay in a harbor. The fluid domain is divided into an inner domain and an outer domain. The outer domain is the area between the left side of the ship section and the incident boundary, where the flow can be expressed by Boussinesq equations. The rest area is the inner domain, which is the domain beneath the ship section plus the domain between the right side of the ship section and the vertical quay wall. The flow in the inner domain can be expressed by Newton's Second Law. Matching conditions on the interface between the inner domain and the outer domain are the continuation of volume flux and the equality of pressures. The numerical results of the coupled model agree well with the experimental data for wave elevations and wave forces. The natural frequency of the fluid motions in the gap between a ship section, seabed and vertical quay wall is derived. It is shown from the experimental data and numerical results that the resonance waves in the gap are induced by the first or higher harmonics of incident waves, and the first or higher order horizontal wave forces on the ship section against vertical quay wall increase greatly when the frequency of the harmonics of incident waves is close to the natural frequency of fluid motions in the gap.

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