堰
流量系数
机械
流量(数学)
超临界流
地质学
岩土工程
数学
工程类
物理
机械工程
地图学
地理
喷嘴
作者
Mahmoud Karimi,Mohammadreza Jalili Ghazizadeh,Mojtaba Saneie,Jalal Attari
标识
DOI:10.1016/j.flowmeasinst.2019.101574
摘要
Side weir is placed at the channel bank as a head regulator or a diversion device. Flow over a side weir has been the subject of many research studies considering its three dimensional and complicated characteristics. However, the labyrinth side weirs warrant further research due to their higher efficiency compared to linear side weirs. In this paper, subcritical flow characteristics and discharge coefficient for both symmetric and asymmetric triangular labyrinth side weirs were studied experimentally. The results show that asymmetric labyrinth side weirs have higher discharge coefficient compared to symmetric labyrinth side weirs; since a larger portion of the crest is orthogonal to the flow. Using the present laboratory data, general equations were proposed for the estimation of discharge coefficient of both symmetric and asymmetric triangular labyrinth side weirs. The results of this study can be useful to design side weirs with high hydraulic performance.
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