南水北调与水利科技2017，Vol.15Issue(1)：186-192,7.DOI:10.13476/j.cnki.nsbdqk.2017.01.031
虹吸井工程中多孔排水管沿程压力分布特性
Characteristics of pressure distribution along perforated drain-pipe in siphon well
张国鹏 1付辉 2杨开林 2赵林明 1王孟文3
作者信息
- 1. 河北工程大学,河北邯郸056021
- 2. 中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038
- 3. 山东农业大学,山东泰安271000
- 折叠
摘要
Abstract
Intakes of nuclear power plant in high-latitude coastal regions generally have ice problems that will affect their normal operation.One solution is to transport warm water to the forebay of pump stations through perforated drain-pipes.This method can raise water temperature and prevent ice jam.A physical model of perforated drain-pipe was used to study its hydraulic characteristics,including pressure distribution and velocity distribution.A non-dimensional formula of pressure distribution within the perforated drain-pipe was proposed and the maximum average error was 0.88％.The study shows that the pressure recovery within the perforated drain-pipe is caused by transformation from velocity to pressure.The larger the velocity,the more obvious the pressure recovery.The pressure of the downstream drain-pipe is larger than that of the upstream because the streamline is skewed near the outlet.The study results can provide references for the design and application of perforated drain-pipes.关键词
多孔排水管/多孔出流/模型试验/压力分布/压差/短管/虹吸井Key words
perforated drain-pipe/multiple-outlet/model test/pressure distribution/pressure difference/nozzle stub/siphon well分类
建筑与水利引用本文复制引用
张国鹏,付辉,杨开林,赵林明,王孟文..虹吸井工程中多孔排水管沿程压力分布特性[J].南水北调与水利科技,2017,15(1):186-192,7.
