水力发电学报2011，Vol.30Issue(2)：100-106,7.
堤防管涌的数值模拟
Numerical simulation of piping in levee
摘要
Abstract
Piping is a dangerous situation of levees in flood period. This paper proposes a new method that uses pipe flow theory for the piping channel, and conventional seepage theory for the other region. At their common boundary the two regions share water head and discharge rate with opposite sign. The coupling mechanism of seepage-pipe flows allows this method to simulate the advancing pattern of piping. Critical flow rate is evaluated by the theories of sediment incipient motion for the cases of horizontal and vertical piping channels, and a threshold velocity is used to determine whether piping channel advances in the erosion course.The proposed method is on a better physical ground than traditional finite element method, while it induces little extra computational cost.关键词
水工结构/临界流速/数值模拟/管涌/管流Key words
hydraulic structure/ critical velocity/ numerical simulation/ piping/ pipe flow分类
建筑与水利引用本文复制引用
周晓杰,介玉新,李广信..堤防管涌的数值模拟[J].水力发电学报,2011,30(2):100-106,7.基金项目
国家重点基础研究发展计划(973)项目(2007CB714102,2010CB732103) （973）
水沙科学与水利水电工程国家重点实验室 （）
