水流量标准装置高位水箱侧槽流动规律的理论分析与实验研究

Theoretical Analysis and Experimental Study on Side Channel Flow in Elevated Head Tank

本文从流体力学基本原理出发,建立了水流量标准装置高水位水箱溢流槽内水流动的无因次运动方程式,并运用数值方法求得槽内水面曲线的近似解。利用Runge-Kutta法计算的结果与实验数据基本吻合。对于水平和倾斜槽底提出了进行工程设计的方法和实用计算公式。

Based upon the basic theory of fluid mechanics, a dimenaionless differential equation of motion for the side channel flow in elevated head tank of a water flowmeter calibration system is presented in this paper. Approximate solutions of the water surface profiles in the side channel are obtained by using Runge-Kutta method. The computed theoretical surface profiles are in agreement reasonable with the experimental data. The procedure and practical formulae for engineering design for both the level and sloping side channels are also presented. In combination with literatures concerned, design problems of top structure in elevated water tank of a water flowmeter calibration facility is then completely solved.