湖北省某泵站进水流道CFD比选优化研究  

Research on CFD Comparison and Optimization of Inlet Channel of a Pumping Station in Hubei Province

作　　者：刘霞 黄可灿 熊文庭 杨小东 李志全 LIU Xia;HUANG Kecan;XIONG Wenting;YANG Xiaodong;LI Zhiquan(Hubei Institute of Water Resources and Hydropower Research,Wuhan Hubei 430072;Hubei International Irrigation and Drainage Research and Training Center,Wuhan Hubei 430072;Banludi Electric Drainage and Irrigation Station,Jianli City,Jingzhou Hubei 433300;School of Power and Mechanical Engineering,Wuhan University,Wuhan Hubei 430072;Water Conservancy and Lake Bureau,Honghu City,Honghu Hubei 433200)

机构地区：[1]湖北金浪勘察设计有限公司,湖北武汉430072 [2]湖北省国际灌排研究培训中心,湖北武汉430072 [3]湖北省监利市半路堤电力排灌站,湖北荆州433300 [4]湖北省水利水电科学研究院,湖北武汉430072 [5]洪湖市水利和湖泊局,湖北洪湖433200

出　　处：《中国科技纵横》2025年第4期73-78,共6页China Science & Technology Overview

摘　　要：为确保湖北省某泵站的安全、平稳、高效运行,探求大型立式泵站不同型式进水流道水力性能的差异,本文对设计工况下大型泵站不同型式进水流道内部的流动状况进行细致的优化处理。通过对5个不同流道的内流特性进行研究,阐明水泵进口水平与纵向截面上的流速分布情况。依据三维流道内的水流动态数值模拟结果,通过水力损失特性、出口流速分布的均匀性以及流速加权平均角度3个关键指标,对肘型、钟型及簸箕型三种大型立式泵站常用的进水流道的水力效率进行全面评估和对比。研究结果表明,虽然钟型进水流道和簸箕型进水流道能够在一定程度上抬高底板高程,减少开挖度,但肘型进水流道损失最小,水力性能最优。In order to ensure the safe,stable and efficient operation of a pumping station in Hubei Province and explore the differences in the hydraulic performance of different types of inlet channels of large-scale vertical pumping stations,this paper uses the method of three-dimensional turbulent numerical simulation and uses the standard k-ɛturbulence model to optimize the internal flow regimes of different types of inlet channels of the large-scale pumping station under design conditions.The internal flow characteristics of five different flow channels were studied,and the flow velocity distribution of the horizontal and longitudinal sections of the pump inlet was revealed.Based on the numerical calculation results of the three-dimensional flow field of the flow channel,the hydraulic loss characteristics,the uniformity of the flow velocity distribution at the outlet of the inlet channel,and the weighted average angle of the flow velocity at the outlet of the inlet channel were used to comprehensively evaluate the inlet flow regime,and the hydraulic performance of three commonly used inlet channels in large-scale vertical pumping stations:elbow inlet channel,bell-shaped inlet flow channel and dustpan inlet flow channel was comprehensively compared.The results show that although the bell-shaped inlet channel and the dustpan-type inlet channel can raise the floor elevation and reduce the excavation degree to a certain extent,the elbow inlet channel has the smallest loss and the best hydraulic performance.

关 键 词：进水流道 水力性能 数值模拟 优化设计 

分 类 号：TV131.4[水利工程—水力学及河流动力学]