| 摘要: |
| 矩形明渠的自由跌水可以作为一种简单的流量测流装置,而且不用校正。由于它在工程中具有重要的实际意义,国内外的许多学者对明渠自由跌水测流进行了研究。对国内外对明渠自由跌水作为量水装置的研究成果进行了分类综述,介绍了自由跌水的试验研究和理论研究的最新进展,指出了明渠跌水测流研究中存在的主要问题,以及进一步研究的必要性。 |
| 关键词: 自由跌水;明渠 流量测定;水深比(EDR) |
| DOI： |
| 分类号:S274.4 |
| 基金项目: |
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| [8]HagerWH. Modifield venturi channel [J]. Journal of Irrigation and Drainage Engineering ,1985,111(1): 19-35.[9]Samani Z, MagallanezH. Simple measuring-flume in trapezoidal channel[J].Journal of Irrigation and Drainage Engineering,1993,119(1): 127-129. |
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chenxiaopan
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henan
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| Abstract: |
| Free overfall in rectangular channels could be used as a simple flow measurement. Due to its practical importance in the open channel, many investigators have studied the free overfall in open channels in decade years. This paper presents a comprehensive review of the studies on the free overfall used as the measuring device in open channel both home and abroad. Experimental and theoretical studies of free overfall were evaluated and compared in details, and the latest advances was also introduced. Based on to the main problems in the present researches of free overfall, the direction and significance of the research on free overfall further research is also pointed out in this paper. |
| Key words: hydraulics, free overfall;open channel;flow measurement;End-Depth-Ratio(EDR) |
