| 独立B型LNG棱形液舱晃荡载荷数值分析 |
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| 引用本文： | 刘文夫,薛鸿祥,唐文勇.独立B型LNG棱形液舱晃荡载荷数值分析[J].船舶工程,2015,37(7):22-25. |
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| 作者姓名： | 刘文夫 薛鸿祥 唐文勇 |
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| 作者单位： | 上海交通大学,上海交通大学,上海交通大学 |
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| 基金项目： | 工信部重大专项“新型液化天然气船液货围护系统预先研究”资助 |
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| 摘 要： | 针对独立B型棱形液舱的结构特点,采用基于Hilber-Hughes-Taylor格式的隐式直接积分法求解液舱运动,应用VOF法求解流体晃荡,结合部分单元参数的概念处理棱形液舱边界,计算了计及弹性支撑效应的独立B型液舱晃荡。通过目标船计算,发现计及弹性支撑效应的液舱晃荡载荷会略大于不计及弹性支撑效应的晃荡载荷;通过不含内部构件弹性支撑液舱、含内部构件弹性支撑液舱和含内部构件非弹性支撑液舱晃荡的比较,分析了独立B型液舱晃荡载荷的特点以及内部构件对波面的限制作用。探讨的计算方法可为独立B型棱形液舱晃荡载荷的预报和分析提供一定的参考。
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| 关 键 词： | 独立B型棱形液舱 液舱晃荡 VOF方法 弹性支撑 |
| 收稿时间： | 2014/12/19 0:00:00 |
| 修稿时间： | 2015/8/13 0:00:00 |
Sloshing Loads Analysis of LNG Carrier with Independent Type B Prismatic Tanks |
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| Institution: | Shanghai Jiao Tong University,Shanghai Jiao Tong University,Shanghai Jiao Tong University |
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| Abstract: | Based on the characteristics of the Independent Type B tank, the coupled algorithm is proposed to analyze the sloshing by involving the Hilber-Hughes-Taylor implicit method for tank motion and the VOF method for liquid sloshing. By conducting coupled calculation, the sloshing load is obtained, which is found to be larger than those ignoring the elastic impact. By comparing with the tank sloshing without inner baffles, the influence of inner baffles on the impact pressure due to sloshing is studied. An efficient and effective method is finally presented for predicting and analyzing the sloshing loads of Independent Type B tank. |
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| Keywords: | elastic support Independent Type tank sloshing VOF method |
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