| 基于边界元方法的二维全非线性数值波浪水槽(英文) |
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| 引用本文： | 孙哲,庞永杰,李宏伟.基于边界元方法的二维全非线性数值波浪水槽(英文)[J].船舶与海洋工程学报,2012,11(4):437-446. |
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| 作者姓名： | 孙哲 庞永杰 李宏伟 |
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| 作者单位： | State Key Laboratory of Autonomous Underwater Vehicle,Harbin Engineering University |
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| 基金项目： | Supported by the National Natural Science Foundation of China(Grant No.51009038/E091002) |
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| 摘 要： | The development of a two dimensional numerical wave tank (NWT) with a rocker or piston type wavemaker based on the high order boundary element method (BEM) and mixed Eulerian-Lagrangian (MEL) is examined. The cauchy principle value (CPV) integral is calculated by a special Gauss type quadrature and a change of variable. In addition the explicit truncated Taylor expansion formula is employed in the time-stepping process. A modified double nodes method is assumed to tackle the corner problem, as well as the damping zone technique is used to absorb the propagation of the free surface wave at the end of the tank. A variety of waves are generated by the NWT, for example; a monochromatic wave, solitary wave and irregular wave. The results confirm the NWT model is efficient and stable.
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| 关 键 词： | numerical wave tank (NWT) boundary element method (BEM) nonlinear free surface condition mixed Eulerian-Lagrangian damping zone cauchy principle value(CPV) |
Two dimensional fully nonlinear numerical wave tank based on the BEM |
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| Zhe Sun,Yongjie Pang,Hongwei Li.Two dimensional fully nonlinear numerical wave tank based on the BEM[J].Journal of Marine Science and Application,2012,11(4):437-446. |
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| Authors: | Zhe Sun Yongjie Pang Hongwei Li |
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| Institution: | 1. State Key Laboratory of Autonomous Underwater Vehicle, Harbin Engineering University, Harbin, 150001, China
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| Abstract: | The development of a two dimensional numerical wave tank (NWT) with a rocker or piston type wavemaker based on the high order boundary element method (BEM) and mixed Eulerian-Lagrangian (MEL) is examined. The cauchy principle value (CPV) integral is calculated by a special Gauss type quadrature and a change of variable. In addition the explicit truncated Taylor expansion formula is employed in the time-stepping process. A modified double nodes method is assumed to tackle the corner problem, as well as the damping zone technique is used to absorb the propagation of the free surface wave at the end of the tank. A variety of waves are generated by the NWT, for example; a monochromatic wave, solitary wave and irregular wave. The results confirm the NWT model is efficient and stable. |
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