有闸控制下实用堰泄流能力曲线计算

Calculation of Practical Weir Discharge Capacity Curve Under Gate Control

如何正确绘制有闸控制下WES实用堰的泄流能力曲线,是目前一些年轻设计人员遇到的问题。从溢流堰泄流的基本理论入手,推导并整理了实用堰堰流和闸孔出流流量公式,介绍了初始流速的计算方法和闸孔出流向堰流转变的条件及其泄流能力曲线的组成。结合工程实例,分析计算有闸控制下WES实用堰的泄流能力曲线,为设计人员正确绘制泄流能力曲线提供指导。

How to draw WES practical weir discharge capacity curve under gate control correctly is a problem for young designers nowadays.This article starts from basic theories of down flow weir,derives and organizes practical weir flow and orifice outflow formula and introduces how to calculate initial flow velocity and conditions of orifice outflow changing into weir flow as well as constitution of its discharge capacity curve.Combined with engineering projects,this article also analyzes and calculate WES practical weir discharge capacity curve,providing guidance for designers to draw discharge capacity curve correctly.