THE EFFECTS OF DISCHARGE RATIO ON HELIX FLOW AT "Y" SHAPED JUNCTION

被引：0
|
作者：
Wang, Xiaogang [1 ]
Yan, Zhongmin [2 ]
机构：
[1] Nanjing Hydraul Res Inst, Nanjing, Jiangsu, Peoples R China
[2] Hohai Univ, Coll Water Conservancy & Hydropower Engn, Nanjing, Peoples R China
来源：
ADVANCES IN WATER RESOURCES AND HYDRAULIC ENGINEERING, VOLS 1-6 | 2009年
关键词：
discharge ratio; helical intensity; turbulence; CONFLUENCES;
D O I：
10.1007/978-3-540-89465-0_387
中图分类号：
TV21 [水资源调查与水利规划];
学科分类号：
081501 ;
摘要：
The structure of flow is very complex at "Y" shaped junction where there is multiform helix flow. This paper analyzes the effects of discharge ratio (the ratio of mainstream flux to post confluence flux) on helix flow at "Y" shaped junction through three-dimensional numerical simulation. It can be concluded a big only helix flow will form at the side of bigger flux and another helix flow will be limited at the side of smaller flux when there are big difference between mainstream flux and tributary flux at "Y" shaped junction. When the flux from mainstream and tributary is almost equal the flow is dominated by two helical cells, back-to-back. According these results a three-dimensional simplified model is established for "Y" shaped junction.
引用
收藏
页码：2253 / +
页数：2
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