农业工程学报2012，Vol.28Issue(2)：77-83,7.DOI:10.3969/j.issn.1002-6819.2012.02.015
测量坡面薄层水流流速的电解质示踪真实边界条件法与系统
Method and system for measuring hill-slope shallow water flow velocity with realistic boundary condition of electrolyte tracer
啜瑞媛 1雷廷武 1史晓楠 2刘琳 3赵军1
作者信息
- 1. 中国农业大学水利与土木工程学院,北京,100083
- 2. 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,杨凌,712100
- 3. 中国科学院青藏高原研究所,北京,100085
- 折叠
摘要
Abstract
The measurement of shallow water flow velocity is significant to hydrological process. A pulse function was used as boundary condition for the analytical solution so as to estimate shallow water flow velocity with relatively high errors. In this study, an additional sensor was added at the location close to the salt injection to register the actual boundary function. The measured boundary condition data were used to estimate the parameters of the boundary condition. Then the shallow water flow velocity was determined by using the least square method. The experimental results indicated that the velocities computed by the two realistic boundary condition methods showed no significant difference, and they agreed also with those measured by the volumetric method. Especially, at short distance, the realistic boundary condition methods had higher accuracy than the pulse method. Thus the realistic boundary condition method and system could be a feasible way to measure water flow velocity.关键词
流速/测量/电解质/薄层水流Key words
velocity/measurements/electrolytes/shallow water分类
建筑与水利引用本文复制引用
啜瑞媛,雷廷武,史晓楠,刘琳,赵军..测量坡面薄层水流流速的电解质示踪真实边界条件法与系统
[J].农业工程学报,2012,28(2):77-83,7.
