阀体后90°圆形弯管内部流场PIV分析

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (09): 1395-1399.

阀体后90°圆形弯管内部流场PIV分析

谢龙1，靳思宇1,2，于建国1，王玉璋1

(1.上海交通大学动力机械与工程教育部重点实验室，上海 200240；2.中国船舶重工集团公司第七零四研究所，上海 200031)

收稿日期:2011-03-02 出版日期:2011-09-30 发布日期:2011-09-30
基金资助:
国家重点基础研究发展规划（973）项目（2007CB210102）

PIV Analysis of Inner Flow Field in 90° Bending Duct of Circular-Section with Fore-End Valve

XIE Long-1, JIN Si-Yu-1, 2 , YU Jian-Guo-1, WANG Yu-Zhang-1

(1. Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiaotong University, Shanghai 200240, China;
2. Shanghai Marine Equipment Research Institute, Shanghai 200031, China)

Received:2011-03-02 Online:2011-09-30 Published:2011-09-30

摘要/Abstract

摘要： 利用激光粒子图像速度场测试技术对阀体后90°圆截面弯管的内部流场进行测量，分别在不同阀体开度和流速工况下，获取了弯管内大量高分辨率瞬态速度场数据，并对其进行统计分析，以获取相关流场特征，包括时均速度场、流线图谱及涡量场等.结果表明：阀体后弯管流场存在明显的高速区和低速区，并在特定工况下产生涡流；流场特性随着阀门开度、流速以及截面位置的不同而产生较大的变化.

关键词: , 阀门, 弯管, 流场, 粒子图像测速, 相关分析

Abstract: Through the established recirculation water channel, the inner flow field in 90° bending duct of circular-section with a fore-end valve was measured by particle image velocimetry (PIV). Characteristics of the flow were obtained through correlation analysis of the massive consecutive high-resolution transient velocity maps, including time-averaged velocity field, streamline pattern and vorticity distributions. Through comparative analysis of the time-averaged velocity field: it is concluded that there exist apparent high-speed and lowspeed regions in the bend part; a vortex emerges on specific conditions; the features of the flow field vary considerably along with the diversity of valve opening magnitude, flow rate and section location.

Key words: valve, bend, flow field, particle image velocimetry (PIV), correlation analysis

中图分类号:

TV131

谢龙1, 靳思宇1, 2, 于建国1, 王玉璋1. 阀体后90°圆形弯管内部流场PIV分析[J]. 上海交通大学学报（自然版）, 2011, 45(09): 1395-1399.

XIE Long-1, JIN Si-Yu-1, 2 , YU Jian-Guo-1, WANG Yu-Zhang-1. PIV Analysis of Inner Flow Field in 90° Bending Duct of Circular-Section with Fore-End Valve[J]. Journal of Shanghai Jiaotong University, 2011, 45(09): 1395-1399.

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