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A novel numerical method for the hydrodynamic analysis of floating bodies over a sloping bottom
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A novel numerical method for the hydrodynamic analysis of floating bodies over a sloping bottom
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A novel numerical method for the hydrodynamic analysis of floating bodies over a sloping bottom
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Journal Article
A novel numerical method for the hydrodynamic analysis of floating bodies over a sloping bottom
2021
Overview
A novel numerical method combining Eigenfunction matching method (EMM) and 3D Rankine source method is developed to investigate wave-body interaction over a sloping bottom. The extended EMM is proposed to create an incident wave model over the sloping bottom, thereby obtaining the Froude-Krylov force and Neumann data on wet surfaces of the floating body for the diffraction problem. A 3D Rankine source method concerning the sloping bottom is developed, in which the free surface and seabed are both divided into the inner domain and outer domain. Source panels are placed in an exponential manner in the latter domain, by which the far field radiation condition is well satisfied. To verify the proposed method, comparisons with other mathematical models involving added mass and damping coefficients, wave exciting forces and motion RAOs by a floating hemisphere and a LNG carrier are carried out.
