水利学报2017，Vol.48Issue(10)：1240-1249,10.DOI:10.13243/j.cnki.slxb.20160909
安装有空气阀的输水管路系统空管充水过程瞬态分析
Filling transient analysis in pipelines with air valves
摘要
Abstract
Air valve plays a critical role in prevention of column separation and water hammer in pipeline systems.The existing research on air valve application focuses on full pipe flow field,but few studies on water hammer protection with air valve in filling process are considered.To this end,the mathematical model of air valve during pipeline filling is built.A method that combines improved Newton iteration method with direct solving method is proposed in order to calculate the air valve model.On this basis,three different types of air valves including air admission valve,air inlet and release valve,and air inlet and micro exhaust valve are employed to study the effect of air valve on filling transients.It is indicated that the air inlet and micro exhaust valve is the most appropriate air valve type for the water hammer protection during pipeline filling.This research provides the reference value for the filling transient analysis in pipelines with air valves.关键词
空气阀/空管充水/水锤/瞬变流/改进牛顿迭代法Key words
air valve/pipeline filling/water hammer/hydraulic transient/improved Newton iteration method分类
建筑与水利引用本文复制引用
王玲,王福军,黄靖,罗建群,桂新春,谢爱华..安装有空气阀的输水管路系统空管充水过程瞬态分析[J].水利学报,2017,48(10):1240-1249,10.基金项目
国家自然科学基金项目(51621061) （51621061）
“十二五”国家科技支撑计划项目(2012BAD08B03,2015BAD20B01) （2012BAD08B03,2015BAD20B01）
