水资源与水工程学报Issue(4)：229-232,4.DOI:10.11705/j.issn.1672-643X.2014.04.047
人工渠道糙率系数影响因素的试验研究
Experiment on influence of factors on roughness coefficient of artificial channel
摘要
Abstract
Through the analysis of test data of physical model , The paper discussed the regularity of roughness changing with water depth and Froude number in rectangular channel .The result showed that when slope is constant ,with the increase of Fr , the roughness n value decreases gradually .In the slow flow channel ,the roughness value of n changes quickly with Fr;in the jet stream channel , the roughness value of n changes more slowly with Fr .That the roughness n changes with water depth relates to flow pat-tern.With the increase of water depth h , the value of n decreases gradually;when Fr is larger than 1 and less than 1.51, the value of n decreases first with the increase of h and then increases with the increase of h at a certain number;when Fr is larger then 1.51,the value of n increases with the increase of h .关键词
人工渠道/均匀流/糙率/水深/弗汝德数Key words
artificial channel/uniform flow/roughness coefficient/water depth/Froude number分类
建筑与水利引用本文复制引用
拜亚茹,赵锦程,邱秀云,赵涛..人工渠道糙率系数影响因素的试验研究[J].水资源与水工程学报,2014,(4):229-232,4.基金项目
新疆水利水电工程重点学科基金项目 （）
