| 考虑粘滞阻尼的Truss Spar频域响应分析 |
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| 引用本文： | 刁伟,翟钢军,李彬彬.考虑粘滞阻尼的Truss Spar频域响应分析[J].船海工程,2011,40(1). |
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| 作者姓名： | 刁伟 翟钢军 李彬彬 |
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| 作者单位： | 1. 大连理工大学建设工程学部,辽宁大连,116024
2. 哈尔滨工业大学土木工程学院,哈尔滨,150090 |
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| 基金项目： | 国家863计划(2006AA09A103) |
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| 摘 要： | 联合势流理论与修改的Morison方程,建立波浪作用下的Truss Spar平台运动响应计算模型。波浪激振力与相关水动力信息采用高阶边界元计算方法获得。通过数值模拟得到Truss Spar平台纵荡、垂荡和纵摇RAO,针对Morison阻力系数对响应的影响进行参数分析。计算结果显示,纵荡和纵摇仅在低频部分对阻力系数敏感。因此平台在遭受二阶波浪慢漂力作用时,粘滞阻尼将起到重要作用。对于垂荡方向,由于Truss Spar安装的垂荡板提供了较大的竖向粘滞阻尼,因此垂荡RAO受阻力系数的影响较大。
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| 关 键 词： | Truss Spar 运动响应 频域 波浪 粘滞阻尼 |
The Motion Analysis of Truss Spar Considering the Viscous Damping in Frequency Domain |
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| Authors: | DIAO wei ZHAI Gang-jun LI Bin-bin |
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| Institution: | DIAO wei1,ZHAI Gang-jun1,LI Bin-bin2(1.Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian Liaoning 116024,China,2.School of Civil Engineering,Harbin Institute of Technology,Harbin150090,China) |
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| Abstract: | A calculation model for Truss Spar's motion was established under the wave action by combing the potential flow theory and the modified Morison equation.The wave exciting force and the relevant hydrodynamic information were acquired by using the high order boundary element method.The surge,heave and pitch s were obtained through numerical simulation,and the parameter analysis for influence of Morison drag coefficient on responses were conducted.The calculation results indicated that the surge and pitch moti... |
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| Keywords: | Truss Spar motion frequency domain wave viscous damping |
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