海洋内孤立波作用下潜体运动响应特性研究  

Study on motion response characteristics of submerged body to oceanic internal solitary wave

作　　者：宣谱 杜辉 史剑 彭湃 王少东 XUAN Pu;DU Hui;SHI Jian;PENG Pai;WANG Shaodong(College of Meteorology and Oceanography,National University of Defense Technology,Changsha 410003,China)

机构地区：[1]国防科技大学气象海洋学院,湖南长沙410003

出　　处：《海洋工程》2024年第2期12-25,共14页The Ocean Engineering

基　　金：国家自然科学基金资助项目(11472307)。

摘　　要：2021年4月印度尼西亚海军“南伽拉402”号潜艇在巴厘岛以北约60海里(111.12km)处发生沉没,分析表明大振幅海洋内孤立波作用可能是事故原因之一。基于大振幅内孤立波eKdV理论与Morison公式建立了内孤立波作用下潜艇的运动学模型,揭示不同内孤立波振幅、潜艇潜深条件下潜艇的运动响应特性,进一步说明内孤立波可能造成印度尼西亚潜艇失事。结果表明:内孤立波对潜艇的运动状态产生巨大影响。垂直方向上潜艇在短时间内产生大幅度掉深,而水平方向上其运动方向在密度界面上或界面处与内孤立波传播方向一致,界面下则相反,且内孤立波产生的垂向力矩可能造成潜艇倾覆。不同波幅、潜深下潜艇表现出不同的运动响应规律。研究表明印度尼西亚潜艇失事可能是潜艇执行任务过程中遭遇了较大振幅内孤立波,导致其发生大幅度、迅速掉深。In April 2021,the Indonesian Navy submarine"KRI Nanggala-402"sank approximately 60 nautical miles(111.12 km)north of Bali.Analysis suggests that the action of large-amplitude internal solitary waves may have been one of the causes of the accident.Based on the eKdV theory of large-amplitude internal solitary waves and the Morison formula,a kinematic model of submarine motion under the action of internal solitary waves is established.It reveals the motion response characteristics of the submarine under different amplitudes of internal solitary waves and submarine depth conditions,further elucidating how internal solitary waves may have contributed to the Indonesian submarine disaster.The results indicate that internal solitary waves have a significant impact on the submarine’s motion state.In the vertical direction,the submarine experiences significant depth changes in a short period,while in the horizontal direction,its motion direction aligns with the propagation direction of the solitary waves at the density interface or surface,but in the opposite direction below the interface.Moreover,the vertical moment generated by the internal solitary waves may cause the submarine to capsize.Submarines exhibit different motion response patterns under different wave amplitudes and depths.The study suggests that the Indonesian submarine accident may have occurred due to encountering significantamplitude internal solitary waves during its mission,resulting in rapid and substantial depth changes.

关 键 词：内孤立波 eKdV理论 Morison公式 运动响应 潜艇失事 

分 类 号：P751[交通运输工程—港口、海岸及近海工程] O352[天文地球—海洋科学]