摘要
遥控潜航器在海洋环境勘测、钻井支持和水下救援等领域得到了广泛应用。遥控潜航器在陆架和陆坡处工作时很容易遭遇海洋内孤立波(Internal Solitary Waves, ISWs)。海洋内孤立波在传播过程中会诱发水平向和垂向流,从而对正在下放、回收和作业状态的遥控潜航器施加作用力。本文分别利用连续分层e KdV和KdV方程估算2个振幅相近的下凹和上凸型海洋内孤立的流速场,进而利用莫里森公式(Morison’s equation)估算这2个海洋内孤立波对1个遥控潜航器的作用力,比较遥控潜航器在不同类型海洋内孤立波流场中的受力差别。研究表明:下凹和上凸型海洋内孤立波均会对遥控潜航器施加较强的水平向力,且不同类型海洋内孤立波在相同深度上对遥控潜航器施加的水平向力的方向不同;对下凹型海洋内孤立波,遥控潜航器在上、下层所受水平向力的大小相差不大;对上凸型海洋内孤立波,遥控潜航器在下层所受水平向力是上层所受的水平向力的2倍;2种类型海洋内孤立波对潜航器施加的垂向力都较弱。
Remotely operated vehicles(ROVs)are widely utilized in marine environmental surveys,drilling support,and underwater rescue operations.ROVs are prone to encounter ocean internal solitary waves(ISWs)when working on the shelf and slope of the ocean.Ocean ISWs can induce horizontal and vertical flows during their propagation,posing a threat to the stability and safety of ROVs during their deployment,recovery,or operation.This paper utilizes the eKdV and KdV equations of continuous stratification to estimate the velocity fields induced by the depression and elevation ocean ISWs with similar amplitudes.The Morison’s equation is then used to estimate the forces of these two kinds of ocean ISWs on a ROV in order to compare the difference in acting forces exerted by the ISWs.Experiment results demonstrate that both depression and elevation ocean ISWs exert strong horizontal force on the ROV.The direction of the horizontal force at the same depth varies between the two types of ocean ISWs,with little difference for depression ocean ISWs but the horizontal forces in lower layer being twice that in upper layer for elevation ocean ISWs.The vertical force exerted by both types of ISWs on the ROVs is weaker when compared to the horizontal force.
作者
赵洁
查国震
宋新改
宋新新
彭红春
ZHAO Jie;ZHA Guozhen;SONG Xingai;SONG Xinxin;PENG Hongchun(School of Marine Technology and Geomatics,Jiangsu Ocean University,Lianyungang 222005,China;National Satellite Ocean Application Service,Beijing 100081,China)
出处
《海洋科学进展》
CAS
CSCD
北大核心
2024年第2期412-424,共13页
Advances in Marine Science
基金
国家自然科学基金项目(62071207)
2021年江苏高校“青蓝工程”项目(苏教师函[2021]11号)
江苏省大学生创新创业训练项目(SY202211641632011)。
关键词
内孤立波
遥控潜航器
上凸型
下凹型
作用力
internal solitary wave
remotely operated vehicle
elevation
depression
acting force
