液舱内气-液-固多相流晃荡运动数值模拟  

Numerical simulation of sloshing motion in liquid tanks with gas-liquid-solid multiphase flow

作　　者：卢莉莉 朱仁庆 方译彩 夏志平 窦朋 纪仁玮 LU Lili;ZHU Renqing;FANG Yicai;XIA Zhiping;DOU Peng;JI Renwei(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China;China Petroleum Pipeline Engineering Co.,Ltd.,Langfang 065000,China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212100 [2]中国石油管道局工程有限公司,河北廊坊065000

出　　处：《海洋工程》2024年第6期21-30,共10页The Ocean Engineering

基　　金：国家自然科学基金资助项目(52271318,50879030,52301321);江苏省自然科学基金资助项目(BK20230669)。

摘　　要：应用多相流理论,建立了液舱内气-液-固多相流晃荡运动计算模型。其中气-液两相流体作为连续相,采用欧拉方法描述其运动,应用流体体积(VOF)法捕捉气-液交界面即自由液面运动;固体颗粒处理为离散相,由拉格朗日法描述其运动。应用计算流体力学-离散元(CFD-DEM)耦合方法,数值计算两相流体和固体颗粒的相互耦合运动。以气-水-冰颗粒多相流为例,借助STAR-CCM+软件平台,计算分析了舱内冰颗粒对液舱晃荡特性的影响。首先通过模拟经典案例单个球颗粒从空气落到水中的过程,验证了CFD-DEM方法的有效性。其次,对纯水液舱晃荡进行了数值模拟并与公开试验结果比较,验证了气-液两相流体晃荡数值方法可行性。然后通过对不同体积分数下气-水-冰颗粒多相流晃荡引起的舱壁压强及自由液面运动幅值的比较分析,研究了气-液-固多相流的晃荡特性。计算结果表明,随着冰颗粒体积分数的增加,液面波动幅值随之减小,说明浮动颗粒对液舱晃荡有明显的抑制作用。Employing multiphase flow theory,a computational model for sloshing motion with gas-liquid-solid multiphase flow within liquid tanks was established.In this model,the gas-liquid two-phase flow was treated as continuous phases and described using the Eulerian approach,with the volume of fluid(VOF)method applied to capture the motion of the gas-liquid interface,i.e.,the free surface motion;solid particles were treated as discrete phases and described by the Lagrangian approach.The CFD-DEM coupling method was applied to numerically calculate the coupled motion between two-phase fluids and solid particles.Taking the gas-water-ice multiphase flow as an example,using the STAR-CCM+software platform,the impact of ice particles in the tank on the sloshing characteristics of the liquid tank was analyzed and calculated.Firstly,by simulating the classic case of a single spherical particle falling from air into water,the effectiveness of the CFD-DEM method was verified.Secondly,numerical simulation of pure water tank sloshing was conducted and compared with the results of published experiments to verify the feasibility of the numerical method for gasliquid two-phase flow sloshing.Then,by comparing and analyzing the pressure on the tank wall and the amplitude of free surface motion induced by sloshing in gas-water-ice multiphase flow under different volume fractions,the sloshing characteristics of gas-liquidsolid multiphase flow were studied.The calculation results indicate that with the increase of the ice particles’volume fraction,the amplitude of fluid surface fluctuation decreases,suggesting that floating particles have a significant damping effect on liquid tank sloshing.

关 键 词：液舱晃荡 气-液-固多相流 VOF法 CFD-DEM耦合方法 数值模拟 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]