摘要
渠道量水对灌溉节水和计划用水具有十分重要的意义。矩形渠道半圆柱形量水槽结构简单,施工方便。选择了3种收缩比,进行了一系列试验研究。应用量纲分析法建立的流量公式具有量纲和谐性,该公式简明实用,流量计算误差小于5%,临界淹没度可达0.87。
Water-measuring in canals is of great significance to water saving and water planning in irrigation districts. The semicircular cylinder measuring flume has simple structure and is easy to construct . In this paper, three kinds of contraction ratios are selected and series experiments are conducted in rectangular canal. The discharge formula established by the dimensional analysis method is dimension harmonious, simple and practical. The average error of discharge calculation is less than 5% and the maximum submergence degree is 0. 87.
出处
《节水灌溉》
北大核心
2008年第11期46-47,50,共3页
Water Saving Irrigation
关键词
渠道量水
矩形渠道
半圆柱形
量纲分析
canal water measuring
rectangular canal
semicylindrical
dimensional analysis
