贯流泵站前池表面涡数值预测与分析  

Numerical prediction and analysis of surface vortex of the forebay in tubular pumping station

作　　者：董兆华[1] 俞凯 黄先北 仇宝云 孟小敏[1] DONG Zhaohua;YU Kai;HUANG Xianbei;QIU Baoyun;MENG Xiaomin(General Irrigation Canal Management Office of Jiangsu Province,Huai’an 223200,China;College of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou 225127,China)

机构地区：[1]江苏省灌溉总渠管理处,江苏淮安223200 [2]扬州大学电气与能源动力工程学院,江苏扬州225127

出　　处：《江苏水利》2024年第11期8-11,共4页Jiangsu Water Resources

基　　金：国家自然科学基金(52379093、52179091);江苏省水利科技项目(2022016)。

摘　　要：贯流泵站因其流道水力损失小,装置效率高的优点在灌溉、调水和排水等领域应用广泛,受水位、工况等影响,泵站前池常出现表面漩涡等不良现象,影响泵站效率及稳定性。以淮安三站灯泡式贯流泵站为研究对象,通过计算流体动力学数值模拟了泵站进水流道和前池,采用BM模型捕捉表面涡的旋转特性,采用S-CLSVOF跟踪自由表面,研究了设计工况下贯流泵站的内部的流动规律和表面涡的发展,结果表明:淹没深度越大,表面涡越弱,但水面的波动更强;表面涡的出现将使进水流道流速均匀性降低。研究结果为大中型贯流泵站吸气涡的数值模拟提供理论参考。Tubular pumping station is widely used in fields such as irrigation,water regulation and drainage due to its advantages of small hydraulic loss in the flow path and high device efficiency.Affected by water level and working conditions,surface vortex and other undesirable phenomena often appear in the forebay of pumping station,which affects the efficiency and stability of pumping station.The Huai’an three bulb tubular pumping station is taken as the research object,and the inlet channel and forebay of the pump station are simulated by CFD.The BM model is used to capture the rotation characteristics of the surface vortex,and S-CLSVOF is used to track the free surface.The internal flow law of the tubular pumping station under the design condition are studied.The results show that the greater the submergence depth,the weaker the surface vortex,but the fluctuation of the water surface is stronger;The appearance of surface vortices will reduce the uniformity of flow velocity in the inlet water channel.The research results provide theoretical reference for the numerical simulation of suction vortex in large and medium-sized tubular pumping stations.

关 键 词：贯流泵站 表面涡 计算流体动力学 

分 类 号：TV675[水利工程—水利水电工程]