摘要
为了研究突变管内水流的流动特性,利用计算流体力学软件Fluent,并采用SIMPLEC的求解方法对突变管进行数值模拟。分析不同入口速度、管径比、倾角对再附着长度和局部阻力系数的影响。仿真结果表明:再附着长度与突扩比和倾角有关;突变管的局部阻力系数随着突扩比的增加而增大,且随着倾角的变小而减小;其结果较好地反映了突变管路的基本特征,可为工业生产中常见的此类问题的研究提供参考。
In order to explore the flow characteristics in horizontal mutation pipe, the SIMPLEC algorithm and the computational fluid dynamics software Fluent are used to make a numerical simulation on the mutation pipe. The effects of different entrance velocity, pipe diameter ratio and inclination angle on the reattachment length and local resistance coeffi-cient are analyzed. The results indicate that the reattachment length is related to expansion ratio and inclination angle; the local resistance coefficient increases with the increment of expansion ratio whereas decreases with the decrement of the inclination angle; The results reflect the essential characteristics of mutation pipe flow and provide a reference for solving the common problems in industrial production.
出处
《湖南工业大学学报》
2015年第1期48-51,97,共5页
Journal of Hunan University of Technology
关键词
突变管
突扩比
突变管倾角
再附着长度
局部阻力系数
mutation pipe
expansion ratio
mutation pipe inclination angle
reattachment length
local resis-tance coefficient
