| 等速上仰翼型分离流动结构的研究 |
| |
| 引用本文： | 孙茂,王家禄,连淇祥.等速上仰翼型分离流动结构的研究[J].力学学报,1992,24(5):517-521. |
| |
| 作者姓名： | 孙茂 王家禄 连淇祥 |
| |
| 作者单位： | 北京航空航天大学流体所，100083 |
| |
| 基金项目： | 国家自然科学基金，霍英东教育基金 |
| |
| 摘 要： | 本文通过在翼型上游和翼表面边界层内放置产生氢气泡的铂丝的方法,清楚地显示了上仰翼型分离剪切层的结构。揭示了在不同的翼型转动角速度范围内,存在三种分离流结构。研究了失速涡,剪切涡及起动涡随时间的演变,它们之间的相互作用和转动角速度等参数的影响,分离剪切层的流动显示结果,结合翼型上气动力与流场中涡量矩的关系的理论,定性地解释了上仰翼型产生非定常高升力的原因。
|
| 关 键 词： | 转动翼型 分离流动 动态失速 流动显示 |
A STUDY OF THE FLOW STRUCTURE AROUND A CONSTANT-RATE PITCHING AIRFOIL |
| |
| Sun Mao,Wang Jialu,Lian Qixiang.A STUDY OF THE FLOW STRUCTURE AROUND A CONSTANT-RATE PITCHING AIRFOIL[J].chinese journal of theoretical and applied mechanics,1992,24(5):517-521. |
| |
| Authors: | Sun Mao Wang Jialu Lian Qixiang |
| |
| Abstract: | This paper presents a flow visualization study of the flow structure arounda constant-rate pitching airfoil using hydrogen bubble technique. It is shown that there exist three types of separated flow structure for different pitching rate. The time evolution of the dymamic stall vortex, shear layer vortices and trailing edge vortex is visualized, and their mutual interaction is studied. The flow visualization results, combining with theoretical analysis in literature, qualitatively explains the mechanism of airfoil dynamic stall. |
| |
| Keywords: | pitching airfoil separated flow dynamic stall flow visualization |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《力学学报》浏览原始摘要信息 |
| 点击此处可从《力学学报》下载免费的PDF全文 |
|
