| 基于表面热膜的超高负荷低压涡轮叶栅附面层特性研究 |
| |
| 引用本文： | 李伟. 基于表面热膜的超高负荷低压涡轮叶栅附面层特性研究[J]. 航空动力学报, 2011, 26(1) |
| |
| 作者姓名： | 李伟 |
| |
| 作者单位： | 中国科学院工程热物理研究所 |
| |
| 摘 要： | 本文利用表面热膜测量了定常来流条件下某超高负荷后加载叶型吸力面附面层的分离流动，并与壁面静压实验结果进行了对比。结果表明，热膜用于超高负荷低压涡轮叶型附面层流动测量可靠性较高；热膜测得的准壁面剪切应力及相关统计参数能准确地判断附面层分离、再附着和转捩位置；在低Re数条件下，分离泡尺寸和转捩区长度随来流Re数的减小而增加。
|
| 关 键 词： | 超高负荷；低压涡轮；分离泡；转捩；表面热膜 |
| 修稿时间： | 2010-02-04 |
Experimental research for boundary layer behaviors on an ultra-high-lift low-pressure turbine profile based on surface hot-film |
| |
| Li Wei. Experimental research for boundary layer behaviors on an ultra-high-lift low-pressure turbine profile based on surface hot-film[J]. Journal of Aerospace Power, 2011, 26(1) |
| |
| Authors: | Li Wei |
| |
| Affiliation: | Institute of Engineering Thermophysics, Chinese Academy of Sciences |
| |
| Abstract: | This paper described a hot-film experimental investigation for steady boundary layer separation behaviors on the suction surface of an ultra-high-lift LP turbine profile and compared with loading distribution. The experiment results indicate that the surface-mounted hot-film is a reliable indicator of the position of separation bubble and transition for the ultra-high-lift LP turbine blade. With Re decreases, the size of separation bubble and transitional regime increases under low Reynolds numbers conditions. |
| |
| Keywords: | ultra-high-lift low-pressure turbine separation bubble transition surface-mounted hot-film |
|
| 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》下载全文 |
