人民黄河Issue(12)：101-103,3.DOI:10.3969/j.issn.1000-1379.2013.12.032
山地灌溉管道含气囊运动的水力特性研究
Research on Hydraulic Characteristics of Mountainous Irrigation Pipe with Air Movement
摘要
Abstract
By using the 75mm PVC water supply pipe,it established the mountainous region irrigation pipe model,and researched the hydraulic characteristics of mountainous irrigation pipe with air movement. In the experiment,it changed the pipe flow and observed the airbag movement of the pipe protruding parts. Through measuring the flow rate and pipe hydrodynamic pressure,it discussed the relationship between the 135 ° elbow local resistance coefficient and Reynolds number. The results show that:a)As the flow rate decreasing,the pipeline airbag volume amplifies and the air bag to pipe flow resistance increases. b)as the Reynolds number increasing,the 135 ° elbow local resistance coefficient decreases. When the Reynolds number is less than 2 × 104 ,the local resistance coefficient decreases rapidly with the increase of the Reynolds number,and finally tends to be stable.关键词
山地灌溉管道/气囊运动/局部阻力系数Key words
mountain irrigation pipe/air movement/local resistance coefficient分类
农业科技引用本文复制引用
周晋军,吕宏兴,朱德兰..山地灌溉管道含气囊运动的水力特性研究[J].人民黄河,2013,(12):101-103,3.基金项目
“十二五”国家科技支撑计划项目（2011BA29B02）；教育部、国家外国专家局“111”计划项目（B12007）；国家工程技术研究中心再建项目（2011FU125Z27-1）；西北农林科技大学科技创新项目（Z109021207）。 （）
