Study of non-linear wave motions and wave forces on ship sections against vertical quay in a harbor |
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| Authors: | Da-Guo Wang Zhi-Li Zou |
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| Institution: | aResearch Center for Numerical Tests on Material Failure, Dalian University, Dalian 116622, PR China;bThe State Key Laboratory of Coastal and Offshore Engineering, Department of Civil Engineering, Dalian University of Technology, Dalian 116024, PR China |
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| Abstract: | The resonance phenomenon of fluid motions in the gap between ship section, seabed and vertical quay wall is studied numerically and experimentally. The natural frequency of the fluid motions in the gap is derived. A two-dimensional time-domain coupled numerical model is developed to calculate the non-linear 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 ship section and the incident boundary, where flow is 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 ship section and vertical quay wall. The flow in the inner domain is 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 are validated by experimental data. |
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| Keywords: | Resonance Natural frequency Coupled model Boussinesq equations Newton's Second Law |
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