| 淹没丁坝坝后水流结构PIV试验研究 |
| |
| 引用本文： | 贾国珍,佘俊华,王涛,张冠卿. 淹没丁坝坝后水流结构PIV试验研究[J]. 水电能源科学, 2012, 30(3): 84-86,213 |
| |
| 作者姓名： | 贾国珍 佘俊华 王涛 张冠卿 |
| |
| 作者单位： | 1. 四川大学水力学与山区河流开发保护国家重点实验室,四川成都,610065
2. 长江重庆航运工程勘察设计院,重庆,401147 |
| |
| 摘 要： | 为揭示淹没丁坝坝后区域的水流特性,在实验室水槽中,采用平面二维粒子图像测速技术(2D-PIV),测量了光滑固定底床上单个丁坝在完全淹没条件下的坝后水平流场及垂向流场。通过分析测量获得了原始粒子图像和淹没丁坝坝后不同位置的平面二维时均速度场和涡量场,并耦合水平面流场与铅垂面流场结果,给出了丁坝坝后流场的部分三维特性。结果表明,淹没丁坝坝后存在明显的回流区,且在回流区内同时存在尺度大致相同的竖轴漩涡和横轴漩涡。
|
| 关 键 词： | 淹没 单丁坝 回流区 流场 PIV 水槽试验 |
PIV Measurement of Flow Structure behind Submerged Spur Dike |
| |
| JIA Guozhen,SHE Junhu,WANG Tao and ZHANG Guanqing. PIV Measurement of Flow Structure behind Submerged Spur Dike[J]. International Journal Hydroelectric Energy, 2012, 30(3): 84-86,213 |
| |
| Authors: | JIA Guozhen SHE Junhu WANG Tao ZHANG Guanqing |
| |
| Affiliation: | State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China;;Changjiang Chongqing Harbour and Waterway Engineering Investigation and Design Institute, Chongqing 401147, China;Changjiang Chongqing Harbour and Waterway Engineering Investigation and Design Institute, Chongqing 401147, China;State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China; |
| |
| Abstract: | This paper presents an experimental study to detect the flow behavior behind a single submerged spur dike fixed in a laboratory flume with smooth rigid bed by using 2D-Particle Image Velocimeter method. Both the horizontal and vertical planes of flow patterns are measured and the time-averaged velocity profiles as well as the vorticity profiles are obtained by processing the original particle images. Three-dimensional characteristics of the flow structure can be caught by combining the horizontal and vertical planes of flow patterns. The results indicate that there are both vertical vortex and transverse vortex behind a single submerged spur dike. |
| |
| Keywords: | inundation single spur dike backflow region flow field PIV channel model test |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
