| 内孤立波作用下Spar平台动力响应特性 |
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| 引用本文： | 黄文昊,林忠义,尤云祥.内孤立波作用下Spar平台动力响应特性[J].海洋工程,2015,33(2):21-31. |
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| 作者姓名： | 黄文昊 林忠义 尤云祥 |
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| 作者单位： | 1. 上海交通大学海洋工程国家重点实验室,上海,200240
2. 嘉兴南洋职业技术学院,浙江嘉兴,314003 |
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| 基金项目： | 国家自然科学基金资助项目(11372184);高等学校博士点基金资助项目(20110073130003);国家重大基础研究计划973课题资助项目(2013CB036103) |
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| 摘 要： | 以三类内孤立波理论(Kd V、e Kd V和MCC)的适用性条件为依据,采用Morison和傅汝德-克雷洛夫公式分别计算Spar平台内孤立波水平力和垂向力,结合时域有限位移运动方程,建立了有限深两层流体中内孤立波与带分段式系泊索Spar平台相互作用的理论模型。以东沙群岛某海域实测内孤立波为对象,数值分析了在内孤立波作用下某经典式Spar平台的内孤立波动态载荷、运动响应及其系泊张力的变化特性。研究表明,内孤立波不仅会对Spar平台产生突发性冲击载荷,使其产生大幅度水平漂移运动,而且还会使其系泊张力显著增大。因此,在Spar平台等深海平台的设计应用中,内孤立波的影响不可忽视。
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| 关 键 词： | 两层流体 Spar平台 内孤立波 动力响应 |
Dynamic response characteristics of a spar platform under internal solitary waves |
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| HUANG Wenhao,LIN Zhongy and iYOU Yunxiang.Dynamic response characteristics of a spar platform under internal solitary waves[J].Ocean Engineering,2015,33(2):21-31. |
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| Authors: | HUANG Wenhao LIN Zhongy and iYOU Yunxiang |
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| Institution: | HUANG Wenhao;LIN Zhongyi;YOU Yunxiang;State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University;School of Jiaxing Nanyang Profession and Technology; |
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| Abstract: | Based on the applicability conditions of three internal solitary wave theories (KdV, eKdV and MCC), a theoretical model for analyzing the interaction characteristics of internal solitary waves with the spar platform is presented by using coupled motion equations of the floating body in time domain, while the horizontal and vertical forces on spar platform due to internal solitary waves are calculated with Morison and Froude Krylov formulas. The observed data near Dongsha Island is used as the characteristic parameters of internal solitary waves to simulate the variation characteristics of the dynamic loads, motion response and mooring tension for a classical spar platform. It is showed that internal solitary waves will give rise to the sudden impact loads and motion responses for spar platform, as well as remarkable tension increase in catenary mooring lines. Therefore, the influence of internal solitary waves on the dynamic behaviors of deep-sea floating structures including spar platforms cannot be neglected in their design and applications. |
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| Keywords: | two-layer fluid spar platform internal solitary wave dynamic response |
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