摘要
机翼形量水槽是一种新型的量水建筑物,为保证量水槽在自由流下工作,设计了底坎式机翼形量水槽。选择3种收缩比,在矩形渠道上进行一系列试验,并运用量纲分析法和不完全自相似理论,拟合得到了量水槽自由流条件下的流量计算公式,拟合度R2=0.9993。结果表明:该公式测流误差小,平均相对误差为1.44%;临界淹没度可达0.88。
Wing-shaped measuring flume is a new kind of flow measurement divice, Wing-shaped measuring flume with sill is designed to ensure that measuring flume can work in free flow. The paper choosed three kinds of contraction ratios and conducted a series of experiments in rectangular canal. According to the dimensional analysis and the incomplete self-similarity theory, this paper drew the flow formula of Wingshaped measuring flume with sill in free flow, and the square of correlation coefficient is R^2 =0. 9993. The results showed that the flow formula had a little error of flow measurement, the average relative error is only 1.44%. The maximum submergence is 0.88.
出处
《灌溉排水学报》
CSCD
北大核心
2007年第5期97-99,共3页
Journal of Irrigation and Drainage
基金
中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室开放基金(10501-141)
关键词
量水槽
量水
机翼形
量纲分析
不完全自相似
measuring flume
water measuring
wing-shaped
dimensional analysis
incomplete self-similarity
