摘要
排水泵站尾水位较低,若出水管路较长则很容易发生水柱脱离,其后果十分严重。防止的方法是在有压出水管路上设置通气孔,减少压力下降。本文通过模型试验与数值计算,详尽研究了通气后出水管路内的非恒定流过程,以及这个过程随通气孔直径改变而发生变化的机理,为合理使用这一方法奠定了基础。
The tail water level of drainage pump station is lower. Provided that the tail-race tunnel is longer,the water column separation may easily happen. It is extremly serious. One way to prevent is to set up the vent on the tail-race tunnel so as to lessen the presure decline. Through experiment and numerical calculation,this paper elaborately researches into the unsteady flow process in the tail-race tunnel after ventilation and this process, folio wing the variation of vent diameter, gives rise to variation mechanism. The foundation is laid for rationally applying this method.
出处
《中国给水排水》
CAS
CSCD
北大核心
1991年第5期9-13,共5页
China Water & Wastewater