基于UDF的前置隔板墩台涡激振动抑制数值分析  

Numerical Analysis of Vortex Induced Vibration Suppression of Front Partition Pier Based on UDF

作　　者：施佳科 李东风[2] 陈姿妙 吴洛宾 方志浩 白福青[2] 胡建永[2] SHI Jiake;LI Dongfeng;CHEN Zimiao;WU Luobin;FANG Zhihao;BAI Fuqing;HU Jianyong(School of Naval Architecture and Maritime,Zhejiang Ocean University,Zhoushan 316022,China;School of Hydraulic Engineering,Zhejiang University of Water Resources and Electric Power,Hangzhou 310018,China;Shanghai Zhongshen Industry Co.,Ltd.,Shanghai 200131,China)

机构地区：[1]浙江海洋大学船舶与海运学院,浙江舟山316022 [2]浙江水利水电学院水利工程学院,浙江杭州310018 [3]上海中申实业有限公司,上海200131

出　　处：《人民黄河》2025年第2期156-160,共5页Yellow River

基　　金：浙江省自然科学基金资助项目(LZJWZ22C030001,LZJWZ22E090004);浙江省水利厅水利科技项目(RB2115);国家重点研发计划项目(2016YFC0402502);国家自然科学基金资助项目(51979249)。

摘　　要：采用用户自定义函数(UDF)中三大宏编程更新墩台的质心位置和振动状态,通过建立墩台涡激振动数值模型并结合嵌套网格技术,对有无前置隔板墩台的水动力特性进行分析,结果表明:设置前置隔板后,约化速度为6~7时墩台的回流区顺流向长度和涡流长度随着约化速度增大显著减小,而无前置隔板时墩台表现出相反趋势,前置隔板有效抑制了尾流扰动。约化速度为7~9时,有前置隔板墩台的回流区顺流向长度和涡流长度比无前置隔板墩台的小,前置隔板减弱了涡激振动对墩台的影响。前置隔板有效延迟了旋涡脱落时间,墩台上下表面压力分布更为均匀,减弱了墩台的涡激振动响应。User Defined Functions(UDF)with three major macro programming was used to update the centroid position and vibration state of the pier,a numerical model of vortex induced vibration of the pier was established and combined with nested grid technology to analyze the hydrodynamic characteristics of the pier with and without pre partition plates.The results show that after setting up the front partition,the downstream length and vortex length of the backflow zone of the pier significantly decrease with the increase of the reduced velocity when the reduced velocity is 6-7,while the pier without a pre baffle shows the opposite trend.The pre baffle effectively suppresses the wake disturbance.When the reduced speed is between 7 and 9,the length of the downstream and vortex in the recirculation zone of the pier with a front baffle is smaller than that of the pier without a front baffle.The front baffle reduces the impact of vortex induced vibration on the pier.The front partition effectively delays the vortex shedding time,and the pressure distribution on the upper and lower surfaces of the pier is more uniform,weakening the vortex induced vibration response of the pier.

关 键 词：UDF 前置隔板 墩台 涡激振动抑制 嵌套网格 

分 类 号：O357.52[理学—流体力学]