人民黄河2024，Vol.46Issue(10)：123-126,137,5.DOI:10.3969/j.issn.1000-1379.2024.10.021
矩形渠道Nystrom流线型量水槽试验研究
Experimental Study on Nystrom Streamline Measuring Flume in Rectangular Channel
摘要
Abstract
In order to explore the performance and applicability of the flow metering flume in rectangular channels,the hydraulic performance tests were carried out by constructing the flow metering flume with different shrinkage ratios with Nystrom drip line.By analyzing the water depth of upstream and the critical water depth of throat section,the flow measurement formula of measuring flume was established,and the measuring characteristics of measuring flume,such as measuring accuracy,upstream Froude number,backwater height and head loss were discussed.The results show that the water depth in front of the measuring tank has a high correlation with the discharge,and the average error of measuring flow is 1.74%,which has a high measuring accuracy.The hydraulic factors of upstream Froude number,backwater height and head loss are all affected by the shrinkage ratio of water tank and overflow.Under the test conditions,the upstream Froude number is smaller than 0.4,the water flow is gentle,the height of backwater and head loss are small,and they all decrease with the increase of the shrinkage ratio of the water tank,and increase with the increase of the channel overflow.关键词
Nystrom流线型量水槽/矩形渠道/测流精度/水力特性Key words
Nystrom flow flume/rectangular channel/flow measuring accuracy/hydraulic characteristics分类
农业科技引用本文复制引用
刘朝阳,古鸿帆,范睿,吴浩然,王帅,张新燕..矩形渠道Nystrom流线型量水槽试验研究[J].人民黄河,2024,46(10):123-126,137,5.基金项目
西北农林科技大学大学生创新创业训练计划项目(X202210712127) （X202210712127）
国家重点研发计划项目(2016YFC0400202) （2016YFC0400202）
