立式圆柱液舱内自由液面三维旋转晃荡试验研究

doi:10.16183/j.cnki.jsjtu.2023.082

上海交通大学学报 ›› 2024, Vol. 58 ›› Issue (11): 1665-1673.doi: 10.16183/j.cnki.jsjtu.2023.082

立式圆柱液舱内自由液面三维旋转晃荡试验研究

刘东喜(), 马仁杰, 蔡文娟, 卢天择

上海海事大学海洋科学与工程学院,上海 201306

收稿日期:2023-03-09 修回日期:2023-05-04 接受日期:2023-05-26 出版日期:2024-11-28 发布日期:2024-12-02
作者简介:刘东喜(1987—),博士,讲师,研究方向为液舱晃荡,电话(Tel.): 021-38282541; E-mail: dxliu@shmtu.edu.cn.
基金资助:
国家自然科学基金(51809163)

Experimental Study of Three-Dimensional Swirling Sloshing of Free Surface in Vertical Cylindrical Tank

LIU Dongxi(), MA Renjie, CAI Wenjuan, LU Tianze

College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China

Received:2023-03-09 Revised:2023-05-04 Accepted:2023-05-26 Online:2024-11-28 Published:2024-12-02

摘要/Abstract

摘要：

搭建了一套液舱晃荡模型试验装置,并开展立式圆柱形液舱内一阶与二阶共振三维旋转波研究.试验发现:当外部激励频率等于自由液面运动的一阶固有频率时,液舱内出现了平面波、旋转波与破碎波3种典型波形;当外部激励频率接近自由液面运动的一阶固有频率时,圆柱液舱内出现了调制波,即所谓的“拍频现象”;当外部激励频率等于自由液面运动的二阶固有频率时,液舱内出现了二阶模态波、二阶模态旋转波与不规则波3种典型的波形.研究结果可为海洋工程设计人员设计浮式平台的圆柱液舱提供参考.

关键词: 圆柱舱, 液体晃荡, 模型试验, 旋转波, 二阶共振

Abstract:

Considering that the research on resonant three-dimensional swirling waves in vertical cylindrical tanks is relatively rare, this paper has built a set of tank sloshing model test device to study the first-mode and second-mode resonant three-dimensional swirling waves in vertical cylindrical tanks. It is found that when the external excitation frequency is equal to the first mode natural frequency of the free surface movement, three typical waveforms, planar wave, breaking wave, and swirling wave, appear in the cylindrical tank. When the external excitation frequency is close to the first mode natural frequency of the free surface movement, the modulation wave, namely beat phenomenon, appears in the cylindrical tank. When the external excitation frequency is equal to the second mode natural frequency of the free surface movement, three typical waveforms, the second mode wave, the second mode swirling wave, and the irregular wave, appear in the cylindrical tank. The research results in this paper can provide reference for offshore engineering designers to design cylindrical tanks of floating platforms.

Key words: cylindrical tank, liquid sloshing, model test, swirling wave, second-mode resonance

中图分类号:

U661.73

刘东喜, 马仁杰, 蔡文娟, 卢天择. 立式圆柱液舱内自由液面三维旋转晃荡试验研究[J]. 上海交通大学学报, 2024, 58(11): 1665-1673.

LIU Dongxi, MA Renjie, CAI Wenjuan, LU Tianze. Experimental Study of Three-Dimensional Swirling Sloshing of Free Surface in Vertical Cylindrical Tank[J]. Journal of Shanghai Jiao Tong University, 2024, 58(11): 1665-1673.

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参考文献 16

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工况	A/mm	A/R	f_e/Hz	f_e/f_n	模态
I	0.48	0.002	1.177	f_e/f₁=1.0	一阶共振
II	0.96	0.004	1.177	f_e/f₁=1.0	一阶共振
III	1.44	0.006	1.177	f_e/f₁=1.0	一阶共振
IV	1.44	0.006	1.118	f_e/f₁=0.95	一阶拍频
V	1.44	0.006	2.338	f_e/f₂=1.0	二阶共振

立式圆柱液舱内自由液面三维旋转晃荡试验研究

Experimental Study of Three-Dimensional Swirling Sloshing of Free Surface in Vertical Cylindrical Tank

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