长喉槽计算原理及几何设计

应用液体连续性方程和能量方程讨论了长喉槽水力计算的基本原理，采用边界层理论分析了水流流经长喉槽的水头损失，从而得到了计算长喉槽水位～流量关系的方法；通过对长喉槽运行机理的分析，采用动态二分副近法对长喉槽几何尺寸进行自动拟定，并应用Ｃ语言编写了计算长喉槽水位～流量叛乱 度及几何设计等的应用程序；将该部分应用程序与长喉槽ＣＡＤ绘图软件相结合，实现了长喉槽计算、设计、绘图一体化。

Calculating Principle and Geometric Design of Long Throat Trough

Applying the continuity equation and the energy equation of flow, the fundamental principle of hydraulic calculation for long throat trough is discussed. The head loss of fluid which flows through the long throat trough is analyzed by using the boundary layer theory. Thus, a method for calculating the relationship between water level and discharge of long throat trough is obtained. Through analyzing the operation mechanism of the long throat trough, and using the dynamic dichotomy approximation method, the geomtric dimensions of the long throat trough are drawn up automatically. And the application programs for calculating the relationship between water level and discharge,degree of submergence and geometric design etc. of the long throat trough are compiled by using the C language. Finally, combining these application programs with the CAD softwares, the integration of calculation, design and plotting of the long throat trough is realized.