复式断面共轭水深范围的判定

Determination of Range of Conjugate Depth for Composite Cross-sections

复式断面因共轭水深范围的不同会有多个水跃方程,为选用正确的水跃方程一般均需进行试算,这个过程异常繁琐。在深入分析复式断面跃前水深与跃后水深二者之间共轭关系的基础上,提出一种直接判定共轭水深取值范围的可靠方法,从而不必反复试算即可直接选用正确的水跃方程。尤其是当大量不同水力参数条件下的共轭水深需要计算时,更可大幅减少试算工作量。

There are several hydraulic jump equations for composite cross sections due to the different ranges of conjugate depth. Therefore, it is usual to perform a trial and error method for choosing the correct hydraulic jump equation, which is a very complicated process. Based on the in deep analysis of the conjugated relationship between initial depths and sequent depths, a reliable method was proposed to judge the ranges of conjugate depth. So, the correct hydraulic jump equation can be adopted directly without repeat calculation. Especially, when large numbers of conjugate depths with different hydraulic parameters need to be calculated, the trail workload will be substantially reduced.