摘要
为分析群潜坝对河道糙率的影响规律及机理,运用FLUENT软件,采用VOF方法与标准k-ε紊流模型相耦合的方法,对坝间距为50,25,12.5,6.25 cm与原河道(没有布置潜坝),流量分别为4,8,15,25及75 m3/h共25种工况下河道水流流场进行了数值模拟,分析了建有群潜坝的河道其糙率的变化,得到了坝间距、水深坝高比对河道糙率的影响规律。其成果对河道整治、河道防洪等具有较大的参考价值与实用价值。
In order to study the submerged dikes′influence on river channel roughness,the FLUENT software,VOF method and standard k-ε turbulence model were adopted to conduct numerical simulation.With regard to the flow fields under 25 water flow conditions,that is,river channels with 50,25,12.5,6.25 cm spacing dikes and original river channel and water flow rate of 4,8,15,25,75 m3/h,the roughness variation of the submerged dikes was analyzed and the influence of dike spacing and water-depth-to-dike-height ratio on river channel roughness was obtained.
出处
《太原理工大学学报》
CAS
北大核心
2011年第3期281-285,共5页
Journal of Taiyuan University of Technology
关键词
潜坝
群潜坝
糙率
数值模拟
submerged dike
Group of submerged dikes
numerical simulation roughness
