| 自耦合射流流动特性的PIV实验研究 |
| |
| 引用本文： | 谭晓茗,张靖周.自耦合射流流动特性的PIV实验研究[J].航空动力学报,2009,24(3):558-565. |
| |
| 作者姓名： | 谭晓茗 张靖周 |
| |
| 作者单位： | 南京航空航天大学,能源与动力学院,南京,210016 |
| |
| 基金项目： | 高等学校博士学科点专项科研基金 |
| |
| 摘 要： | 采用三维粒子图像测速仪(PIV)对具有相同出口面积的圆孔喷口和狭缝喷口自耦合射流激发器外部流场特征进行了实验研究.结果表明:狭缝喷口自耦合射流与圆孔喷口自耦合射流的形成过程相同,都经历了涡环产牛、发展、破碎融合的周期性过程,在某个法向距离上形成较为稳定的连续性射流.时均流场分布表明狭缝喷口自耦合射流的流场型面较宽,扩展角度较大.狭缝短轴方向和圆孔水平方向上自耦合射流的时均速度曲线呈现规则的对称分布和速度自模的特征,而狭缝长轴方向自耦合射流在靠近喷口处的速度分布呈现马鞍状,这一特征随着法向距离增大而逐渐消失.
|
| 关 键 词： | 自耦合射流 流动特性 速度分布 实验研究 |
| 收稿时间： | 2008/1/10 0:00:00 |
| 修稿时间： | 2008/6/26 0:00:00 |
PIV experimental study on flow characteristics of synthetic jets |
| |
| TAN Xiao-Ming and ZHANG Jing-Zhou.PIV experimental study on flow characteristics of synthetic jets[J].Journal of Aerospace Power,2009,24(3):558-565. |
| |
| Authors: | TAN Xiao-Ming and ZHANG Jing-Zhou |
| |
| Institution: | College of Energy and Power Engineering;Nanjing University of Aeronautics and Astronautics;Nanjing 210016;China |
| |
| Abstract: | The characteristics of flowfields of synthetic jets with slot-nozzle and hole-nozzle were investigated experimentally by utilizing Particle Image Velocimetry(PIV).The results show that: the formations of the synthetic jets from different-nozzles are the same.During the formation process,the rings of vortexes were generated,developed,broken down and merged together periodically,forming a steady jet within a certain normal distance near the orifice exit.The time-averaged flowfields of the synthetic jets were ... |
| |
| Keywords: | PIV |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
| 点击此处可从《航空动力学报》下载免费的PDF全文 |
|
