阻水建筑物在河流数值模拟中的概化方法研究  

Research on the Generalization Method of Water Blocking Structures in Numerical Simulation of Rivers

作　　者：王彩虹 程雪 卢少为 由星莹 WANG Caihong;CHENG Xue;LU Shaowei;YOU Xingying(Hubei Institute of Water Resources Survey and Design, Wuhan 430070, China;Hanjiang Xinglong Water Conservancy Project Management Bureau, Wuhan 430062, China)

机构地区：[1]湖北省水利水电规划勘测设计院,湖北武汉430070 [2]湖北省汉江兴隆水利枢纽管理局,湖北武汉430062

出　　处：《水电与新能源》2022年第5期25-29,33,共6页Hydropower and New Energy

摘　　要：运用数学模型进行水流模拟时,采用的网格尺寸往往大于阻水建筑物(如桥墩、码头等)的实际尺寸,阻水建筑物的概化问题对其河道防洪分析影响作用重大。基于FLUENT三维模型得出小尺度网格下桥墩壅水值,对二维数学模型进行验证,再采用平面二维水流数学模型研究大尺度网格下桥墩壅水,对不同桥墩概化方法得到的桥墩壅水值进行分析,并对桥墩概化方法进行了展望。When mathematical models are used in water flow simulation,the mesh size adopted is often larger than the actual dimension of the water blocking structures such as the bridge piers and docks.The generalization of the water blocking structures is of a significant influence on the flood control analysis of the river.Based on the three-dimensional simulation model in FLUENT,the backwater values of bridge piers with small mesh size are obtained and the two-dimensional mathematical model is verified.Then,the two-dimensional plane mathematical model of river flow is adopted to get the backwater values of bridge piers with large mesh sizes.The backwater values of bridge piers obtained with different generalization methods of piers are analyzed.Suggestions are also proposed on the generalization methods of bridge piers.

关 键 词：阻水建筑物 桥墩壅水 平面二维数学模型 概化方法 

分 类 号：TV691[水利工程—水利水电工程]