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本文从流体力学基本原理出发,建立了水流量标准装置恒液位水箱侧槽流动的基本微分方程式,并运用数值方法求得其近似解。根据有限差分法计算的侧槽水面线与实验结果基本吻合。在此基础上,本文分别对于水平和倾斜槽底这两种情况提出了进行工程设计的方法和实用计算公式。至此,作为文献[1]、[2]的延续和补充,本文完全解决了水流量标准装置恒液位水箱水面结构的设计方法问题。
In this paper, based on the basic principles of fluid mechanics, the basic differential equation of flow in a side tank of a constant liquid level tank for a water flow standard device is established and its approximate solution is obtained by numerical method. According to the finite difference method, the lateral surface water line basically agrees with the experimental result. On this basis, this paper puts forward the engineering design method and practical calculation formula for the horizontal and inclined groove bottom respectively. So far, as the continuation and supplement of the literature [1], [2], this paper completely solves the design method of water level structure of water level standard device constant level tank.