对动力渠道瞬变流计算中的断波法进行了改进,一是构造关联方程组,二是采用新的迭代法,使不收敛的方程组在给定精度条件下可以进行迭代计算。该迭代法准确性高且迭代速度非常快。用该方法对金水街水电站在甩全负荷的情况下动力渠道中的涌波过程进行了计算,并与原电站设计进行了比较,结果表明改进断波法是切实可行的。

By composing related equations and a new iterative method,the pervious segment wave algorithm of unsteady flow in open channel was improved.This method has high precision and very fast operation speed.The transient process of fluctuating wave in dynamic channel of Jinshuijie hydropower station was numerically investigated using this method when it unloaded completely,and a comparison with its original design data was made.The results manifest that the new method is correct and practicable.