| 旋转射流喷嘴内旋流特性的PIV实验分析 |
| |
| 引用本文： | 胡鹤鸣,刘昭伟,陈永灿,李玲.旋转射流喷嘴内旋流特性的PIV实验分析[J].水力发电学报,2009,28(4). |
| |
| 作者姓名： | 胡鹤鸣 刘昭伟 陈永灿 李玲 |
| |
| 作者单位： | 清华大学水利水电工程系,北京,100084 |
| |
| 基金项目： | 国家自然科学基金资助项目 |
| |
| 摘 要： | 利用二维粒子图像测速技术(PIV)对旋转水射流喷嘴内部流场进行了测量,将喷嘴入流条件分为入流流量比(切向流量与轴向流量之比)以及入流总流量两个因素,分析了两者对喷嘴出口旋流结构、切向速度分布以及喷嘴出口旋流数的影响.实验结果表明,入流流量比对喷嘴出口的切向速度大小及其径向分布都有影响,而入流总流量只影响其大小;入流流量比和入流总流量的增加均可使喷嘴出口的旋转流动增强,但只有入流流量比的增加可使喷嘴出口旋流数增加,而旋流数是喷嘴加旋效果的检验标准.
|
| 关 键 词： | 水力学 喷嘴 旋转射流 流速分布 |
Experimental study on the swirling characteristics of a swirling water jet nozzle by using PIV |
| |
| HU Heming,LIU Zhaowei,CHEN Yongcan,LI Ling.Experimental study on the swirling characteristics of a swirling water jet nozzle by using PIV[J].Journal of Hydroelectric Engineering,2009,28(4). |
| |
| Authors: | HU Heming LIU Zhaowei CHEN Yongcan LI Ling |
| |
| Affiliation: | Department of Hydraulic & Hydropower Engineering;Tsinghua University;Beijing 100084 |
| |
| Abstract: | An experimental system for the swirling water jet nozzle is established to investigate the swirling characteristics of the nozzle flow,and the velocity field in the nozzle is measured with a two-dimensional particle image velocimetry(PIV) system.An quantitative analysis on the internal flow structure,tangential velocity distribution and swirling intensity shows that,among the two parameters,i.e.the flow rate ratio(tangential inflow vs.axial inflow) and the total flow rate of the nozzle inlet condition,the f... |
| |
| Keywords: | PIV |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
