灌溉排水学报2025，Vol.44Issue(3)：32-43,12.DOI:10.13522/j.cnki.ggps.2024280
矩形渠道便携式三角形中央量水槽水力性能研究
Hydraulic performance of a portable triangular-central flume for rectangular channels
摘要
Abstract
[Objective]Accurate measurement of channel flow is essential for effective irrigation district management.This study evaluates the hydraulic performance of a portable triangular-central flume for measuring water flow in rectangular channels.[Method]Physical tests were conducted under six different flow rates(0.031-0.093 m3/s),four top angles(45°-90°),and three shrinkage ratios(0.375-0.625).Hydraulic performance parameters,including water surface profile,Froude number,backwater height,and head loss under varying operating conditions,were obtained through theoretical calculations and analysis.Flow equations were derived using both hydraulic and dimensional analyses.[Result]The water surface profile variation can be divided into four distinct regions:the upstream backwater zone,the rapid transition zone,the post-jump transition zone,and the downstream stable zone.The upstream Froude number ranged from 0.21 to 0.39,while backwater height varied between 4.28 cm and 18.53 cm.Head loss ranged from 7.13%to 32.82%.The relative error of the flow equations derived from hydraulic and dimensional analyses was between-5.98%and 5.02%and between-3.23%and 2.03%,respectively.The optimal location for measuring water depth in the flume was determined to be 0.5 m upstream of the flume throat.[Conclusion]The flow equation derived from dimensional analysis provides more accurate measurements compared to conventional flumes.The flume exhibits optimal hydraulic performance when the shrinkage ratio is between 0.5 and 0.625.Among the tested top angles,a 60° configuration yielded the best hydraulic performance.The portable triangular-central flume offers a simple yet effective method for measuring flow while maintaining strong hydraulic efficiency.These findings serve as a valuable reference for designing flow measurement flumes in irrigation canal systems.关键词
矩形渠道/三角形中央量水槽/量纲分析/水力性能/流量计算公式Key words
rectangular channel/triangular central measuring flume/dimensional analysis/hydraulic performance/flow calculation formula分类
农业科技引用本文复制引用
郭星辰,原常聪,王富有,马合木江·艾合买提,金鹏,李军波,陶洪飞..矩形渠道便携式三角形中央量水槽水力性能研究[J].灌溉排水学报,2025,44(3):32-43,12.基金项目
新疆维吾尔自治区重大科技专项(2022A02003) （2022A02003）
新疆水利工程安全与水灾害防治重点实验室研究项目(ZDSYS-YJS-2022-22) （ZDSYS-YJS-2022-22）
新疆维吾尔自治区人民政府公派出国留学成组配套项目 （）
新疆水利科技项目(XSKJ-2022-16) （XSKJ-2022-16）
