中文核心期刊
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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2025, Vol. 44 ›› Issue (10): 91-98.DOI: 10.3969/j.issn.1674-0696.2025.10.12

• 港口航道·水利水电·资源环境 • 上一篇    

省水船闸平面阀门快速启闭下流激振动特性研究

关鑫1，钟亮1,2，刘锦阳1,2，吴禹衡1   

  1. (1.重庆交通大学 水利水运工程教育部重点实验室，重庆 400074； 2. 重庆交通大学 国家内河航道整治工程技术研究中心，重庆 400074)
  • 收稿日期:2024-10-25 修回日期:2024-12-26 发布日期:2025-11-06
  • 作者简介:关鑫（1997—），男，山西晋中人，博士研究生，主要从事船闸阀门流激振动方面的研究。E-mail：915061743@qq.com 通信作者：钟亮（1980—），男，江西赣州人，教授，博士，主要从事水力学及河流动力学方面的研究。E-mail：zlcqjtu@163.com
  • 基金资助:
    广西科技计划项目（桂科AA23062023）；重庆市教委科学技术研究项目（KJQN202400761）

Flow-Induced Vibration Characteristics under Rapid Opening and Closing of Plane Valve of the Water-Saving Ship Lock

GUAN Xin1，ZHONG Liang1,2，LIU Jinyang1,2，WU Yuheng1   

  1. (1. Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University, Chongqing 400074, China; 2. National Engineering Research Center for Inland Waterway Regulation, Chongqing Jiaotong University, Chongqing 400074, China)
  • Received:2024-10-25 Revised:2024-12-26 Published:2025-11-06

摘要： 为研究省水船闸阀门快速启闭下的流激振动特性，以国内某大型运河省水船闸为例，建立了输水廊道与阀门三维数学模型，采用标准k-ε湍流模型、 动网格技术和流固耦合技术，研究了阀门的固有频率与模态特性，探讨了快速启闭下不同作用水头对阀门周围无量纲合流速U*、 无量纲压强P*以及阀门结构变形等参数的影响。结果显示：在干模态下，当阀门门槽两侧及顶端固定时，其结构基频为103.82 Hz，且固有频率随着模态阶数的增加而增大，相邻两高阶模态的频率差逐渐减小；在阀门快速开启阶段，流速和压强均呈现明显的非稳态特性，尤其在高水头工况下，阀门下游区域的流速迅速增加，高速区集中于阀门底缘及下游廊道底部，在水头差为30 m时，U*最大可达1.40，P*可达1.25；阀门变形位置集中在阀门梁格中部以及阀门底缘，经过傅里叶变换分析发现，水头差与阀门的振动主频和振幅呈正相关，并且阀门的变形曲线近似呈“8”字型。研究成果可为省水船闸输水阀门运行工况优化和结构安全设计提供参考。

关键词: 水利工程；省水船闸；平面阀门；流激振动；数值模拟；模态分析

Abstract: In order to study the flow-induced vibration characteristics of water-saving ship lock valves under rapid opening and closing, a three-dimensional mathematical model of the water transfer gallery and valve was established, taking a large domestic canal water-saving ship lock as an example. The standard k-ε turbulence model, dynamic mesh technology and fluid-structure coupling technology were used to study the natural frequency and modal characteristics of the valve, and the influence of different acting water heads on the parameters around the valve such as the dimensionless velocity magnitude U*, dimensionless pressure P* and valve structure deformation under rapid opening and closing was discussed. The results show that in the dry mode, when the two sides and the top of the valve slot are fixed, the fundamental frequency of the structure is 103.82 Hz, and the natural frequency increases with the increase of modal order, with the frequency difference between two adjacent higher-order modes gradually decreasing. In the rapid opening stage of the valve, the flow velocity and pressure show obvious non-steady-state characteristics, especially under high water head conditions. The flow velocity in the downstream area of the valve increases rapidly, and the high-speed area is concentrated at the bottom edge of the valve and the bottom of the downstream gallery. When the head difference is 30 m, U* can reach a maximum of 1.40 and P* can reach 1.25. The valve deformation position is concentrated in the middle of the valve beam and the bottom edge of the valve. After Fourier transform analysis, it is found that the head difference is positively correlated with the main frequency and amplitude of the valve vibration, and the deformation curve of the valve is approximately in the shape of an “8”. The research results can provide references for optimizing the operating conditions and the structural safety design of water transfer valves in water-saving ship locks.

Key words: hydraulic engineering; water-saving ship lock; plane valve; flow-induced vibration; numerical simulation; modal analysis

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