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 Hengxu Liu,Wenyang Duan and Xiaobo Chen.Wave Loading on Concentric Porous Cylinders with Varying Porosity[J].Journal of Marine Science and Application,2013,(4):400-405.[doi:10.1007/s11804-013-1210-1]
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Wave Loading on Concentric Porous Cylinders with Varying Porosity


Wave Loading on Concentric Porous Cylinders with Varying Porosity
Hengxu Liu Wenyang Duan and Xiaobo Chen
Hengxu Liu Wenyang Duan and Xiaobo Chen
1. College of Shipbuilding Engineering, Harbin Engineering University, Harbin150001, China 2. Research Department, Bureau Veritas, Neuilly-Sur-Seine 92570, France
concentric porous cylinders wave loading diffraction eigenfunction varying porosity porous-effect parameter wave force
Wave diffraction of two concentric porous cylinders with varying porosity was studied by using an analytical method based on eigenfunction matching. The fluid domain around the cylinders is divided into three sub-domains and in each sub-domain an eigenfunction expansion of the velocity potential is obtained by satisfying the Laplace equation, the boundary conditions on the free surface and on the sea bed. The unknown coefficients of eigenfunction expansions are determined by boundary conditions on the porous hulls. In the paper, the boundary conditions are based upon the assumption that the flow in the porous medium is governed by Darcy’s law. Two porous-effect parameters applied on two porous cylinders are functions of the vertical coordinate instead of the constant. Wave loading on the outer and inner cylinder is presented in the numerical results.


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Supported by the National Natural Science Foundation of China under Grant No.51079032.
Last Update: 2013-11-14