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Research on Bow Slamming Load of Post-Panamax Container Ship

超巴拿马型集装箱船船头砰击载荷研究

基本信息

批准号：
15360464
负责人：
ARAI Makoto
金额：
$ 5.95万
依托单位：
Yokohama National University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2006
项目状态：
已结题

项目摘要

The size of container ships has been remarkably increased since 1990s. There are several reasons for this phenomenon such as striking increase of the volume of marine transportation in East Asia, alliance of shipping companies to strengthen their competitive business power, rapid modernization of port facilities, etc. This size change of container ships leads to some new problems in naval engineering. One of them is a problem of bow-flare slamming. In the design stage of conventional container ships, a simple design formula based on the damage records of bow flare structures of small and medium sized container ships has been used. However the rapid change of the ship size makes it difficult for the ship designers to apply the design formula to recently appearing very large container ships. In this study a numerical approach to predict the slamming load that is exerted on the bow of large container ships has been studied. In the process of developing 3D numerical method, the numerical program was validated by applying it to a similar impact problem called sloshing since a lot of data for validation were available. After validating the numerical method, it was applied to the bow-flare slamming problem of a Post-Panamax container ship. A series of large scale model experiment were performed, and impact pressure on the bow flare, local wave elevation, green water on deck, ship motion, etc., were measured. Numerical simulations were also carried out and the results of model experiment were examined. The limit of 2D method was realized and the superiority of 3D method was confirmed. Our 3D numerical method is useful to predict reasonably the impact pressure that is exerted on the bow flare of large container ships. We have published 25 research papers that are related to this study.

自20世纪90年代以来，集装箱船的规模显著增加。造成这一现象的原因有以下几个方面：东亚海上运输量的急剧增长、航运公司联合以增强其竞争力、港口设施的快速现代化等。集装箱船的尺寸变化给船舶工程带来了一些新的问题。其中之一是弓形喇叭的撞击问题。在常规集装箱船的设计阶段，采用了基于中小型集装箱船首部火炬结构损伤记录的简单设计公式。然而，船舶尺寸的快速变化使得船舶设计者很难将设计公式应用于最近出现的超大型集装箱船。本文研究了大型集装箱船首部砰击载荷的数值预报方法。在开发三维数值方法的过程中，由于有大量可供验证的数据，将该程序应用于一个类似的碰撞问题--晃动问题，对该程序进行了验证。在对数值方法进行验证后，将其应用于后巴拿马型集装箱船的首部喇叭砰击问题。进行了一系列大比例尺模型试验，测量了船首火炬冲击压力、局部波高、甲板绿水冲击压力、船舶运动压力等。还进行了数值模拟，并对模型试验结果进行了检验。认识到了2D方法的局限性，肯定了3D方法的优越性。本文的三维数值计算方法对于合理预测大型集装箱船首部扩口所受的冲击压力是有用的。我们已经发表了25篇与这项研究相关的研究论文。

项目成果

期刊论文数量（61）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Three-Dimensional Numerical Simulation of Sloshing in Tanks of LNG Carriers

LNG运输船储罐晃动三维数值模拟

DOI：
发表时间：
2005
期刊：
Conference Proceedings of The Japan Society of Naval Architects and Ocean Engineers Vol. 1
影响因子：
0
作者：
Arai;M.;Y.Ogawa;Humberto S
通讯作者：
Humberto S

Numerical simulation of bulk carriers' ballast water exchange at sea and assessment of sloshing loads

散货船海上压载水交换数值模拟及晃荡载荷评估

DOI：
发表时间：
2004
期刊：
Proceedings of ISOPE-2004
影响因子：
0
作者：
Arai;M
通讯作者：
M

Prediction of Sloshing Load in Irregular Seaways by a Numerical Simulation Method

不规则航道晃荡载荷的数值模拟方法预测

DOI：
发表时间：
2005
期刊：
Proceedings of ISOPE-2005
影响因子：
0
作者：
Arai;M.;Y.Ogawa;Humberto S;荒井誠;Humberto S;Makoto Arai;Makoto Arai;荒井誠;Humberto S. Makiyams
通讯作者：
Humberto S. Makiyams

An Accurate and Stable Method for Computing Sloshing Impact Pressure and its Application to the Study of Bulk-Carrier Ballast-Tank Sloshing

准确稳定的晃荡冲击压力计算方法及其在散货船压载舱晃荡研究中的应用