| 横流不稳定性条件下初始扰动增长实验研究 |
| |
| 引用本文： | 吴永健,明晓.横流不稳定性条件下初始扰动增长实验研究[J].空气动力学学报,2000,18(1):62-67. |
| |
| 作者姓名： | 吴永健 明晓 |
| |
| 作者单位： | 南京航空航天大学空气动力学系,南京,210016 |
| |
| 摘 要： | 在具有近似等顺压梯度的45°后掠平板上，人工激励非定常扰动的条件下，进行了三维边界层承受横流不稳定性实验研究。在扰动增长的初始阶段，信号的信噪比非常低，本文首次成功测量了初始扰动的增长，将有用的信号有效地提取出来。对于不同的来流速度与不同的人工扰动频率与波数，一系列的实验研究提供了一组初始扰动的增长曲线。
|
| 关 键 词： | 三维边界层 横流 稳定性 人工扰动 |
| 文章编号： | 0258-1825（2000）01-0062-06 |
| 修稿时间： | 1998-06-09 |
Experimental Study of Initial Disturbance Growth for Cross Flow Instability |
| |
| Wu Yongjian,Ming Xiao.Experimental Study of Initial Disturbance Growth for Cross Flow Instability[J].Acta Aerodynamica Sinica,2000,18(1):62-67. |
| |
| Authors: | Wu Yongjian Ming Xiao |
| |
| Abstract: | Under the condition of artificial disturbances, the investigations were performed on a three dimensional boundary layer of a 45 degree swept back flat plate, which is subject to cross flow instability. Initial growth of disturbances were measured by means of hot wire anemometry. The procedure of eliminating the noise was used during data reduction, due to the detected signals with low signal to noise ratio. The initial instability development has been investigated for different modes of artificial disturbances and oncoming wind speeds. |
| |
| Keywords: | D boundary layer cross flow stability artificial disturbance |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
