上海交通大学学报

上海交通大学学报 ›› 2019, Vol. 53 ›› Issue (8): 952-956.doi: 10.16183/j.cnki.jsjtu.2019.08.009

• 学报（中文） • 上一篇    下一篇

矩形舱内三层液体晃荡特性的数值分析

刘东喜1，庄宿国2，王晋3，尤云祥3   

  1. 1. 上海海事大学 海洋科学与工程学院， 上海 201306； 2. 西安航天动力研究所， 西安 710100； 3. 上海交通大学 海洋工程国家重点实验室， 上海 200240
  • 出版日期:2019-08-28 发布日期:2019-09-10
  • 作者简介:刘东喜(1987-), 男, 河南省平顶山市人, 博士, 讲师, 研究方向为计算流体力学. 电话(Tel.): 021-38282541; E-mail: dongxiliu@hotmail.com.
  • 基金资助:
    国家自然科学基金资助项目(51809163)

Numerical Investigation of Three-Layer Liquid Sloshing in a Rectangular Tank

LIU Dongxi 1,ZHUANG Suguo 2,WANG Jin 3,YOU Yunxiang 3   

  1. 1. College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China; 2. Xi’an Aerospace Propulsion Institute, Xi’an 710100, China; 3. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Online:2019-08-28 Published:2019-09-10

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摘要： 采用耦合水平集和流体体积(CLSVOF)界面捕获方法对浮式生产储卸油(FPSO)装置矩形清洗舱内三层液体的晃荡特性进行数值分析；通过对比数值模拟与试验所得矩形舱内三层液体的液-液界面形状和高度的变化情况，验证了CLSVOF方法模拟多层液体晃荡特性的准确性.结果表明，多层液体晃荡过程中出现的物理现象远比传统单层液体晃荡中的复杂.当矩形舱外部激励频率等于液-液界面的最低阶固有频率时，所产生的共振效应不仅会导致液-液界面的晃荡幅度远大于自由表面的晃荡幅度，而且会导致液-液界面产生Kelvin-Helmholtz不稳定性.

关键词: 矩形舱； 三层液体； 晃荡； 耦合水平集和流体体积方法； Kelvin-Helmholtz不稳定性

Abstract: In the present study, the coupled level set and volume of fluid (CLSVOF) interface capturing method is employed to investigate the three-layer liquid sloshing in a rectangular wash tank installed aboard floating production storage and offloading (FPSO). The study shows that in the case of multi-layer liquid sloshing, the relevant physics can be much more complicated compared with the single liquid sloshing case. When the forced oscillation frequency is slightly away from the resonant frequency, there is an interesting phenomenon that the internal sloshing between liquid-liquid interfaces is significantly more pronounced than the actual oscillation of the top free surface. Another important issue for multi-interface problems is Kelvin-Helmholtz instability along the interface. Finally, the excellent capability of the CLSVOF method for multi-layer liquid sloshing simulation is validated by the qualitative comparisons of numerical and test results.

Key words: rectangular tank; three-layer liquid; sloshing; coupled level set and volume of fluid (CLSVOF) method; Kelvin-Helmholtz instability

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