隔墩对双向流道泵装置内流及压力脉动影响研究  

Research on the Influence of Division Pier on the Internal Flow Pattern and Pressure Fluctuation of Two-way Reversible Pumping System

作　　者：赵振江 石磊 蒋红樱 成立[3] 张帝 卜舸[4] ZHAO Zhen-jiang;SHI Lei;JIANG Hong-ying;CHENG Li;ZHANG Di;BU Ge(Sihong Water Conservancy Bureau,Suqian 223900,Jiangsu Province,China;Hydraulic Engineering Science and Technology Consultation Limited Company,Nanjing 210029,China;College of Hydraulic science and engineering,Yangzhou University,Yangzhou 225009,Jiangsu Province,China;Jiangsu Provincial Water Conservancy Survey and Design Institute Co.,Ltd,Yangzhou 225009,Jiangsu Province,China)

机构地区：[1]泗洪县水利局,江苏宿迁223900 [2]江苏省水利工程科技咨询股份有限公司,南京210029 [3]扬州大学水利科学与工程学院,江苏扬州225009 [4]江苏省水利勘测设计研究院有限公司,江苏扬州225009

出　　处：《中国农村水利水电》2021年第7期175-180,共6页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(51779214);江苏省第五期“333高层次人才培养工程”。

摘　　要：为分析隔墩对某双向流道内部流态及压力脉动的影响规律,采用CFD技术对某双向流道泵站无隔墩与增设隔墩情况下流道内水流流态与装置内压力脉动特性展开研究,结合模型试验验证了数值模拟的准确性。研究结果表明:隔墩的布置可少量提升叶轮进口流速均匀度,改善进水流道两侧流速较低情况。增设隔墩对叶轮导叶处影响较小,叶轮及导叶处主次频不变,幅值变化不大。进水流道边壁脉动时域规律基本相同,受导叶出口水流剩余环量影响,出水流道边壁时域分布存在差异,在进水流道盲端及侧壁处,脉动幅值得以降低。研究成果可对双向流道泵装置压力脉动研究提供参考。In order to analyze the influence of the division pier on the internal flow pattern and pressure fluctuation of a two-way passage,CFD technology is used to study the flow pattern and pressure fluctuation characteristics in the two-way reversible pumping system without or with division piers.The accuracy of numerical simulation is verified by the model test.The results show that the arrangement of the division pier can slightly improve the uniformity of the flow velocity at the impeller inlet,and improve the low flow rate on both sides of the inlet passage.The main and secondary frequencies of impeller and guide vane remain unchanged,and the amplitude changes little.Due to the influence of the residual circulation at the outlet of the guide vane,the time-domain distribution of the side wall of the outlet passage is different.At the blind end and side wall of the inlet passage,the fluctuation amplitude is reduced.The research results can provide a reference for the study of pressure fluctuation of two-way reversible pumping system.

关 键 词：双向流道 压力脉动 隔墩 数值模拟 泵装置 

分 类 号：TV131[水利工程—水力学及河流动力学]