矩形壁面凸起对流体晃荡影响敏感性分析  

Sensitivity analysis of the influence of rectangular wall protrusions on liquid sloshing

作　　者：吴家和 刘婷婷[3] 吕林[1] 吴锤结[2] 许宁[4] 卫志军 WU Jia-he;LIU Ting-ting;LÜLin;WU Chui-jie;XU Ning;WEI Zhi-jun(State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116023,China;School of Aeronautics and Astronautics,Dalian University of Technology,Dalian 116023,China;Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China;National Marine Environmental Monitoring Center,Dalian 116023,China)

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116023 [2]大连理工大学航空航天学院,辽宁大连116023 [3]中国科学院大连物理化学研究所,辽宁大连116023 [4]国家海洋环境监测中心,辽宁大连116023

出　　处：《船舶力学》2023年第7期974-983,共10页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(42176208,51779040,41676087);中央高校基本科研基金资助项目(DUT22LAB126);大连化物所科研创新基金资助项目(DICPDMTO201801)。

摘　　要：储舱内的流体晃荡易对薄膜型液化天然气装备造成局部损伤,因此如何合理抑制薄膜型储舱内流体的晃荡一直是海洋工程领域中亟待解决的工程科学问题。本文采用数值模拟方法首先分析采用矩形壁面凸起结构抑制流体晃荡的有效性,并阐明壁面凸起抑制流体晃荡的机理;其次分别分析凸起高度和长度对流体晃荡的抑制效果。结果表明,凸起高度为0.1H时,能够有效抑制流体晃荡;凸起长度为0.3L时,能够有效抑制流体晃荡。该研究结果可为船载液化天然气储舱结构设计提供一定的参考依据。Liquid sloshing could easily cause local damage of a membrane tank in a liquified natural gas(LNG)carrier.Thus,suppressing the liquid sloshing in the tank is an important issue in offshore engineering.In this paper,the effectiveness of the rectangular wall protrusions on suppressing liquid sloshing and the sup⁃pressing mechanism were firstly numerically investigated.Then,the effects of the height and length of the rectangular wall protrusions on suppressing liquid sloshing were investigated,respectively.The results show that when the length of wall protrusions is fixed and the height is 0.1H,liquid sloshing can be suppressed ef⁃fectively,and that when the height of wall protrusions is fixed and the length is 0.3L,the sloshing can be sup⁃pressed effectively.The results can provide a reference for the design of the LNG tank.

关 键 词：晃荡抑制 流场分析 壁面凸起结构 敏感性分析 OPENFOAM 

分 类 号：U661.3[交通运输工程—船舶及航道工程]