尾水调压室与明渠水位波动的叠加

Superimposition of Water Level Fluctuation in Tailrace Surge-chamber and Open Channel

对尾水调压室和明渠结合的尾水系统,明渠水位波动对调压室的水位波动有着不可忽略的影响。通过理论分析和数值计算,证实了明渠重力波与调压室质量波存在叠加,并探讨了明渠长度对波动叠加的影响。结果表明,考虑两者水位波动叠加,对调压室及明渠水位波动均不利。

The water level fluctuation of open channel has considerable effect on surge-chamber in the tailrace system with both open channel and tailrace surge-chamber. Through theoretic analysis and numerical calculation, this paper confirms the existence of the phenomenon of the wave superimposition by gravity wave in open channel and mass wave in surge-chamber, and discusses the effect of the length of open channel on the wave superimposition. The result shows that the wave superimposition has bad effect on the water level fluctuation of both open channel and tailrace surge-chamber.