Effective boundary element method for the interaction of oblique waves with long prismatic structures in water of finite depth |
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| Authors: | Yong-Hong Zheng Yong-Ming Shen Chiu-On Ng |
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| Institution: | aQingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, People's Republic of China;bState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, People's Republic of China;cDepartment of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China |
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| Abstract: | An effective boundary element method (BEM) is presented for the interaction between oblique waves and long prismatic structures in water of finite depth. The Green's function used here is the basic Green's function that does not satisfy any boundary condition. Therefore, the discretized elements for the computation must be placed on all the boundaries. To improve the computational efficiency and accuracy, a modified method for treatment of the open boundary conditions and a direct analytical approach for the singularity integrals in the boundary integral equation are adopted. The present BEM method is applied to the calculation of hydrodynamic coefficients and wave exciting forces for long horizontal rectangular and circular structures. The performance of the present method is demonstrated by comparisons of results with those generated by other analytical and numerical methods. |
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| Keywords: | Interaction of oblique waves with structures Boundary element method Hydrodynamic coefficients Wave force |
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