THE EFFECTS OF DISCHARGE RATIO ON HELIX FLOW AT Y SHAPED JUNCTION
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.
discharge ratio helical intensity turbulence
Xiaogang Wang Zhongmin Yan
Nanjing Hydraulic Research Institute Nanjing, China College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, China
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
2253-2259
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）