基于FLUENT计算下苏北抽水泵站蓄水池多相场渗流特征分析研究  

Analysis and Research on Multiphase Field Seepage Characteristics of Subei Pump Station Reservoirs based on FLUENT Calculation

作　　者：华中 陈晶 王鹏 HUA Zhong;CHEN Jing;WANG Peng(Huai’an Huaihe Water Conservancy Construction Engineering Co.,Ltd.,Lianshui 223400,China)

机构地区：[1]淮安市淮河水利建设工程有限公司,江苏涟水223400

出　　处：《中国水能及电气化》2021年第8期33-38,共6页China Water Power & Electrification

摘　　要：针对苏北拟建抽水泵站蓄水池与灌渠流量关系,对蓄水池二、三相渗流场特征分析。二相场中相对水面线较稳定,流速随沿程水深呈多阶段变化,但断面最大流速不超过0.4m/s,稳定性较好。三相场中断面含沙量为先增后平稳,平稳状态均出现在水深2~2.05m处,水深1.2m处远离进水口的2号、3号断面含沙量比1号断面分别降低了23.4%、30.2%;进水口最大泥沙含量达14kg/m 3,池内中部泥沙含量分布具有层次性,分布区间为11.9~14kg/m 3;运营全过程出水口含沙量在初始上升,最终稳定在9kg/m 3左右,满足灌渠输水设计要求。文章内容可为水利工程中研究多相场渗流特征提供一定参考。The characteristics of the second-phase and three-phase seepage fields of the reservoir are analyzed in view of the relationship between the reservoir and the irrigation channel flow of the proposed pump station in North Jiangsu.The relative water surface profile is stable in the two-phase field,and the velocity varies with the water depth along the path in multiple stages.However,the maximum velocity at section is less than 0.4m/s with better stability.The sediment concentration of section is increased firstly and stabilized subsequently in the three-phase field.The steady stable appears at the water depth of 2~2.05m.The sediment concentration of No.2 and No.3 sections of the water depth of 1.2m away from the water inlet is respectively reduced by 23.4%and 30.2%compared with that of No.1 section.The maximum sediment concentration at the water inlet reaches 14kg/m 3.The sediment concentration distribution in the middle of the pond is hierarchical with distribution range of 11.9~14kg/m 3.The sediment concentration at the water outlet is increased initially in the whole process of operation,and it is finally stabilized at about 9kg/m 3.It meets the design requirements of irrigation channel water transmission.The paper can provide some reference for the study of multiphase seepage characteristics in hydraulic projects.

关 键 词：FLUENT 抽水泵站 蓄水池 多相场 渗流 

分 类 号：TV675[水利工程—水利水电工程]