外部激励对刚弹性液舱晃荡影响的数值模拟  

Numerical Simulation in the Influence of External Excitation on Liquid Sloshing with Elastic and Rigid Tanks

作　　者：张珍 陈明辉 邵菲 谢永和 ZHANG Zhen;CHEN Minghui;SHAO Fei;XIE Yonghe(College of Naval Architecture and Maritime,Zhejiang Ocean University,Zhoushan 316022,China;China Ship Development and Design Center,Wuhan 430064,China)

机构地区：[1]浙江海洋大学船舶与海运学院,浙江舟山316022 [2]中国舰船研究设计中心,湖北武汉430064

出　　处：《青岛科技大学学报（自然科学版）》2022年第4期97-104,共8页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：国家重点研究项目(2019YFD0901504);浙江省自然科学基金项目(LQ17E090003);浙江省教育厅一般科研项目(Y202044645)。

摘　　要：液舱晃荡是非常复杂的流固耦合现象,不仅会影响船舶的稳性,还会对液舱壁面产生巨大的砰击力,对船体结构产生局部破坏。本工作在模拟弹性液舱液体晃动过程时,结构域采用FEM法离散,流体域的控制方程采用FVM法进行数值离散。首先,通过模拟刚性液舱横摇运动,并将结果与试验结果进行对比,验证计算方法的有效性。在此方法基础之上,分别模拟了刚性与弹性液舱中液体晃荡过程。对比分析外界激励参数变化对晃荡载荷的影响以及液体晃动现象,进一步揭示了刚性液舱与弹性液舱的晃荡特性。Liquid sloshing which can not only affect stability of the ship but also generate great impact on bulkhead resulting in structure destruction is a very complicated fluid-solid coupling phenomenon.In this study,the FEM method was used for the structural domain discretization and the control equation of the fluid domain was numerically discretized by the FVM method amid the issue of simulating sloshing in an elastic tank.At first,the numerical results achieved by simulating the rolling motion of the rigid tank were compared to that in experiment,which was to verify the feasibility and validity of the calculation method adopted in this paper.On this basis,tanks with rigid and elastic characteristic were excited by different parameters of external excitation.Analyzing the pressure on the bulkhead caused by sloshing and the phenomenon of liquid sloshing reveals the sloshing characteristics of rigid tanks and elastic tanks.

关 键 词：流固耦合 弹性液舱 外部激励 晃荡载荷 

分 类 号：U661.3[交通运输工程—船舶及航道工程]