波浪中艏外飘砰击压力时空分布模型试验研究  

Experimental Investigation on Temporal and Spatial Distribution of Bow Flare Slamming in Waves

作　　者：司海龙[1] 顾学康[1] 胡嘉骏[1] 田超[1] 赵南[1] 耿彦超[1] SI Hailong;GU Xuekang;HU Jiajun;TIAN Chao;ZHAO Nan;GENG Yanchao(China Ship Scientific Research Center,Wuxi 214082,China)

机构地区：[1]中国船舶科学研究中心,无锡214082

出　　处：《中国造船》2024年第4期15-23,共9页Shipbuilding of China

基　　金：国家重点研发计划资助项目(2022YFB3306200)。

摘　　要：基于模型试验对一艘超大型集装箱船首外飘区域的砰击压力时空分布开展了研究,根据砰击程度和船体与波浪的相互作用方式归纳了4种表现类型,研究了典型工况下艏外飘区域砰击压力的时空分布特征。在此基础上,基于冲量定理,建立了艏外飘区域砰击压力的简化计算方法,并对规则波中砰击压力的试验结果进行了不确定度分析。分析表明,艏外飘区域承受的砰击压力在不同位置的峰值差别较大,最大的峰值发生在艏柱上部左右两侧附近,可达4.11kPa;砰击迁移速度在水平方向远大于在垂直方向,简化后艏外飘区域的整个砰击过程持续时间约0.15 s,各测点砰击压力上升持续时间均值约为0.01 s,下降持续时间均值约为0.05 s;不同置信水平条件下砰击压力的不确定度与均值之比约为6%~18%。This paper investigates the temporal and spatial distribution of slamming pressure on the bow flare of an ultra-large container ship through model tests.Four types of impact pressure on the bow flare in waves are summarized based on the severity of the impact and the interaction modes between the ship and the waves.Characteristics of the temporal and spatial distribution of slamming pressure on the bow flare under typical conditions are examined.Based on the momentum theory,a simplified method of slamming pressure on the bow flare is developed.Uncertainty of slamming pressure in regular waves is analyzed,which reveals four distinct types of bow flare slamming.The peak slamming pressure varies significantly at different places.The maximum slamming pressure is near the upper left and right sides of the stem,reaching up to 4.11 kPa.The horizontal movement speed of the slamming is significantly greater than its vertical movement speed.The entire slamming process of bow flare lasts 0.15 seconds approximately.The average duration of the increase in slamming pressure at each measurement point is approximately 0.01 seconds,while the average duration of the decrease is about 0.05 seconds.The ratio of the uncertainty of the slamming pressure to its mean value varies between 6%and 18%approximately under different confidence levels.

关 键 词：艏外飘 砰击压力 时空分布 模型试验 不确定度 

分 类 号：U661.1[交通运输工程—船舶及航道工程]