高载液率下矩形液舱晃荡的1阶共振  

First-Order Resonant on Sloshing for High Filling Rate in a Rectangular Tank

作　　者：于曰旻 YU Yuemin(Hainan University,College of Civil Engineering and Architecture,Haikou 570228,China;Hainan University,State Key Laboratory of Marine Resource Utilization in South China Sea,Haikou 570228,China)

机构地区：[1]海南大学,土木建筑工程学院,海口570228 [2]海南大学,南海海洋资源利用国家重点实验室,海口570228

出　　处：《船舶工程》2022年第6期61-64,169,共5页Ship Engineering

基　　金：海南省自然科学基金资助(519MS026);海南大学科研启动基金资助项目(KYQD(ZR)1878)。

摘　　要：通过理论分析、模型试验和数值模拟3种方法,在高载液率时,3种不同的激励幅值下,长系列激励频率作用下,研究矩形液舱晃荡的1阶共振特性。采用MTS双向振动台开展强迫横荡简谐激励下矩形液舱晃荡的模型试验。基于ANSYS FLUENT软件中无黏流体的欧拉方程和连续性方程建立数值模型,采用VOF方法捕捉自由液面,动量源方法驱动外界激励,进行高载液率时矩形液舱晃荡的数值模拟。模型试验和数值模拟得到的最低阶共振频率均小于解析解,随着外界激励幅值的增大,呈线性关系递减。The first-order resonant characteristics on sloshing are investigated through three different methods,which are the theoretical analysis,the model test and the numerical simulation under the long series excitation frequencies and three different excitation amplitudes for the high filling rate in a rectangular tank.A series of experiments are carried out on the MTS biaxial shake table under the harmonic excitation.Based on the Euler equation and continuity equation of in viscid fluid in ANSYS FLUENT software,the numerical model is established to simulate the liquid sloshing for the high filling rate.The free surface is captured by VOF method,and the external excitation is driven by the momentum source method.The lowest resonant frequencies obtained from the experimental and numerical results are smaller than the analytical results,which decrease linearly with the increase of the external excitation amplitudes.

关 键 词：液舱晃荡 高载液率 模型试验 数值模拟 1阶共振频率 

分 类 号：U661.73[交通运输工程—船舶及航道工程]