近岸缓流区河道动能修正系数的研究  

Research on Kinetic Energy Correction Factor of River Channel with Nearshore Back-flow Zone

作　　者：陈杏文[1] 徐威震 

机构地区：[1]重庆交通大学河海学院,重庆400074 [2]重庆市水利电力建筑勘测设计研究院,重庆401120

出　　处：《科学技术与工程》2017年第1期295-298,共4页Science Technology and Engineering

基　　金：国家自然科学基金(51379101);重庆交通大学研究生教育创新基金(CYS16175)资助

摘　　要：动能修正系数值是工程一维数学模型计算中应考虑的主要因素,其通常取值为1,但动能修正系数常规取值对边侧存在近岸缓流区的天然河道并不适用。从动能修正系数的定义出发,对近岸缓流区河道动能修正系数作理论推导,同时结合水槽概化模型试验对公式进行验证。得到了近岸缓流区河道动能修正系数的计算方法和沿程变化的一些规律。相关成果可为工程中涉及近岸缓流区河道一维数学模型计算提供参考。Kinetic energy correction factor of one-dimensional mathematical model is a major factor to consider,it usually equals to one. The general kinetic ener-gy correction factor is not suitable for river channel with nearshore back-flow zone. The definition of kinetic energy correction factor was used to study the factorof river channel with nearshore back-flow zone in theory,combined with flume gene-ralized model test as equation check. The calculation method of kinetic energy correction factor of river channel with nearshore back-flow zone was presented,and some rules along the way are given as well. The results can be used for refer-ence in a one-dimensional mathematical model calculation involved river channel with nearshore back-flow zone.

关 键 词：近岸缓流区河道 动能修正系数 概化模型试验 一维数学模型 

分 类 号：TV76[水利工程—水利水电工程]