| 带有变化率的同轴圆柱体受到的波浪力研究(英文) |
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| 引用本文： | 刘恒序;段文洋;陈晓波.带有变化率的同轴圆柱体受到的波浪力研究(英文)[J].船舶与海洋工程学报,2013,12(4):400-405. |
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| 作者姓名： | 刘恒序;段文洋;陈晓波 |
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| 作者单位： | College of Shipbuilding Engineering, Harbin Engineering University;Research Department, Bureau Veritas |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No.51079032 |
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| 摘 要： | 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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| 关 键 词： | concentric porous cylinders wave loading diffraction eigenfunction varying porosity porous-effect parameter wave force |
Wave loading on concentric porous cylinders with varying porosity |
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| Hengxu Liu,Wenyang Duan,Xiaobo Chen.Wave loading on concentric porous cylinders with varying porosity[J].Journal of Marine Science and Application,2013,12(4):400-405. |
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| Authors: | Hengxu Liu Wenyang Duan Xiaobo Chen |
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| Institution: | 1. College of Shipbuilding Engineering, Harbin Engineering University, Harbin, 150001, China
2. Research Department, Bureau Veritas, Neuilly-Sur-Seine, 92570, France
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| Abstract: | 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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