THEORETICAL AND EXPERIMENTAL STUDIES OF HYDRAULIC CHARACTERISTICS OF DISCHARGE TUNNEL WITH VORTEX DROP

被引：8
|
作者：
Chen Hua-yong [1 ]
Xu Wei-lin [1 ]
Deng Jun [1 ]
Niu Zhi-pan [1 ]
Liu Shan-jun [1 ]
Wang Wei [1 ]
机构：
[1] Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China
来源：
JOURNAL OF HYDRODYNAMICS | 2010年 / 22卷 / 04期
基金：
中国国家自然科学基金;
关键词：
discharge tunnel with vortex drop; dropshaft; velocity; wall pressure; cavitation; CAVITATION; FLOW;
D O I：
10.1016/S1001-6058(09)60091-3
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The velocities at given points in the volute chamber, the contracted section and the vertical dropshaft of a discharge tunnel with vortex drop were measured by a small specially designed L-shaped tube, as Laser Doppler Velocimetry (LDV) or Particle Image Velocimetry (PIV) would not work there due to the special structure of the discharge tunnel with vortex drop. Hydraulic empirical formulas were proposed to predict the velocities and the angles of the velocities made with the vertical direction theta. The theoretical analysis results were in good agreement with experimental data. Therefore, the method proposed in this paper can be used to analyze related characteristics of discharge tunnels with vortex drop. Additionally, different model scales were considered to predict the cavitation characteristics on the wall of a dropshaft in practical engineering.
引用
收藏
页码：582 / 589
页数：8
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