Study on the Load Characteristics of Submerged Body Under Internal Solitary Waves on the Continental Shelf and Slope  

作　　者：LIU Qian CUI Jian MEI Huan GAO Jun-liang WU Xiang-bai ZHANG Dai-yu ZHANG Rui-rui SHANG Xiao-dong 

机构地区：[1]School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China [2]Key Laboratory of Port,Waterway and Sedimentation Engineering of MOT,Nanjing Hydraulic Research Institute,Nanjing 210029,China [3]State Key Laboratory of Tropical Oceanography,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China [4]Southern Marine Science and Engineering Guangdong Laboratory,Guangzhou 511458,China

出　　处：《China Ocean Engineering》2024年第5期809-820,共12页中国海洋工程（英文版）

基　　金：supported by the Natural Science Foundation of Jiangsu Province(Grant No.BK20210885);the National Natural Science Foundation of China(Grant Nos.52372356,52371277,and 42076005);the Guangdong Basic and Applied Basic Research Foundation(Grant No.2023A1515010890).

摘　　要：Based on the high-quality observation data and the numerical simulation,the evolution characteristics of internal solitary waves(ISWs)and the load on the suspend submerged body are studied on the continental shelf and slope separately.The observed ISWs exhibit the first mode depression ISWs.The amplitudes of ISWs on the shelf and slope areas reach 50 m and 80 m,respectively.The upper layer velocity in the westward direction is about 0.8 m/s on the continental shelf and 0.9 m/s on the continental slope during the passing through of ISWs.The lower layer is dominated by the eastward compensating flow.In the vertical direction,the water in front of the wave flows downward,while the water behind the wave flows upward,and the maximum vertical velocity exceeds 0.2 m/s.Numerical simulation results show that the larger the amplitude of ISWs,the larger the load on the submerged body.The force on the submerged body by ISWs is dominated by the vertical force,and the corresponding maximum vertical forces on the continental shelf and slope are−25 kN and −27 kN.The submerged body is subjected to a large counterclockwise moment and the sudden change of the moment will also cause the submerged body to capsize.This paper not only gives a deeper understanding of the characteristics of ISWs from the deep continental slope to the shallow continental shelf,but also has a certain guiding value for the prediction of ISWs and for marine military activities.

关 键 词：internal solitary waves submerged body CFD horizontal force vertical force MOMENT South China Sea 

分 类 号：P731.24[天文地球—海洋科学] P75[军事] E919