| 深水半潜式平台垂荡运动计算研究 |
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| 引用本文： | 姜宗玉,董刚,崔锦,王爱军. 深水半潜式平台垂荡运动计算研究[J]. 中国海洋平台, 2013, 0(5): 34-39 |
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| 作者姓名： | 姜宗玉 董刚 崔锦 王爱军 |
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| 作者单位： | 戈朗(上海)海事技术咨询有限公司;中国船级社天津分社 |
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| 摘 要： | 势流理论对水的粘性的忽略以及半潜平台的小水线面特性，导致计算的垂荡运动幅值在共振频率附近远大于实际运动幅值。基于考虑水的粘性对平台运动的影响，将粘性阻尼系数引入刚性浮体波浪诱导运动计算方程的粘性系数矩阵，对半潜平台垂荡运动进行预报。运用此方法以某型深水半潜式平台为例进行计算，将计算结果和试验结果进行对比，对比结果表明该方法可以在不需要加入人工阻尼的前提下有效预报半潜式平台在共振区的垂荡运动。
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| 关 键 词： | 半潜式平台 垂荡运动 三维源汇分布法 粘性阻尼 |
On Numerical Investigation of Heave Motion for Semi-submersible Platform |
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| JIANG Zong-yu;DONG Gang;CUI Jin;WANG Ai-jun. On Numerical Investigation of Heave Motion for Semi-submersible Platform[J]. China offshore Platform, 2013, 0(5): 34-39 |
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| Authors: | JIANG Zong-yu DONG Gang CUI Jin WANG Ai-jun |
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| Affiliation: | JIANG Zong-yu;DONG Gang;CUI Jin;WANG Ai-jun;Grenland Group(China) Ltd.;China Classification Society; |
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| Abstract: | The ideal fluid assumption and small waterplane characteristic of semi-sub- mersible platform results in unrealistically large heave motion near resonance. To solve this issue, viscous damping is introduced into motion equation of rigid body. The introduced ap proach is applied to predict heave motion of one semi-submersible platform and, successively, validated by model test. All results show that 3D source and sink distribution approach considering viscous damping is reliable to predict semi-submersible platform＇s heave motion near resonance without artificial damping. |
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| Keywords: | semi-submersible platform heave motion 3D source and sink distribution approach viscous damping |
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