非棱柱体管道的一维水击计算及分析

在水电站输水系统水力过渡过程的一维计算中，对非棱柱体管道的处理，一般采用等价管方法。为了分析等价管方法带来的计算误差，本文给出了非棱柱体管道的一维水击计算方程，建立了相应的特征线解法。本文通过计算某一电站的水力过渡过程，分析了本文的计算方法和等价管计算方法对计算结果的影响，得出了一些有价值的结论。

One dimensional Analysis of Waterhammer in Nonprismatic Pipes

In the calculation of one dimensional transient flow in the networks of hydroelectric powerplant, nonprismatic pipes were generally treated as the equivalent circle pipes with constant diameter. In order to analyze the computational error caused by the above method, this paper deduced the new basic differential equations of waterhammer, which were sloved by the characteristics method. The effects of these two methods on the results were analyzed by a computational example, and some useful conclusions were obtained.