基于LES的水工钢闸门流激振动数值模拟研究  

Numerical Simulation of Flow Induced Vibration of Hydraulic Steel Gate Based on LES

作　　者：郭博文 高玉琴[1,2] 范冰 刘智 GUO Bowen;GAO Yuqin;FAN Bing;LIU Zhi(Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China;Research Center on Levee Safety and Disaster Prevention Ministry of Water Resources,Zhengzhou 450003,China;Jiangxi Provincial Institute of Water Sciences,Nanchang 330029,China)

机构地区：[1]黄河水利科学研究院,河南郑州450003 [2]水利部堤防安全与病害防治工程技术研究中心,河南郑州450003 [3]江西省水利科学研究院,江西南昌330029

出　　处：《人民黄河》2024年第3期126-131,共6页Yellow River

基　　金：江西省水工安全工程技术研究中心开放研究基金资助项目(2020GGCZX03);河南省自然科学基金青年科学基金资助项目(202300410545);江西省青年基金资助项目(2021BA214045);黄委优秀青年人才科技项目(HQK-202314)。

摘　　要：针对钢闸门流激振动机制的复杂性以及钢闸门流激振动在工程实际中的多发性,以二维平板钢闸门为例,基于ADINA有限元分析软件,建立了不同开度的流场有限元模型和固体有限元模型,探究了不同开度时水工钢闸门动力响应规律,阐明了单、双向流固耦合作用下钢闸门动力响应差异,揭示了水工钢闸门流激振动机制。结果表明:1)随着开度的增大,流场不同位置处脉动压力逐渐减小,钢闸门附近旋涡脱落的频率逐渐降低;2)对于水工钢闸门而言,可以采用单向流固耦合代替双向流固耦合进行计算;3)水工钢闸门流激振动产生的机制主要是钢闸门周围旋涡脱落频率与钢闸门结构第一阶自振频率一致或相近,导致钢闸门发生了共振。In view of the complexity of flow induced vibration mechanism of steel gate and the frequent occurrence of flow induced vibration of steel gate in engineering practice,taking two⁃dimensional flat steel gate as an example and based on ADINA finite element analysis software,the flow field finite element model and solid finite element model under different opening degrees were established respectively,the dynamic response law of hydraulic steel gate with different opening degrees was explored,and the difference of dynamic response of steel gate under one⁃way and two⁃way fluid structure coupling was clarified,then the mechanism of flow induced vibration of hydraulic steel gate was revealed.The results show that a)with the increase of opening degrees,the fluctuating pressure at different positions of the flow field is decreased gradually,and the frequency of vortex shedding near the steel gate is decreased gradually.b)For hydraulic steel gate,one⁃way fluid struc⁃ture coupling can be used instead of two⁃way fluid structure coupling.c)The mechanism of flow⁃induced vibration of hydraulic steel gate is that the vortex shedding frequency of the flow field around the steel gate is consistent with or close to the first⁃order natural vibration frequency of the steel gate structure,resulting in the resonance of the steel gate.

关 键 词：钢闸门结构 流激振动 数值分析 大涡模拟 

分 类 号：TV691[水利工程—水利水电工程] TV663