| 后向台阶层流分离剪切层特性研究 |
| |
| 引用本文： | 兰世隆,王晋军.后向台阶层流分离剪切层特性研究[J].北京航空航天大学学报,1996,22(5):581-584. |
| |
| 作者姓名： | 兰世隆 王晋军 |
| |
| 作者单位： | 北京航空航天大学飞行器设计和应用力学系 |
| |
| 摘 要： | 应用激光测速仪对生向台阶层流边界层分离产生的剪切层在再附前的发展进行了测量，得到了时均速度、湍流强度及剪切层厚度等的分布特性，并研究了来流湍流度对台阶后流场湍强度分布及剪切层发展的影响，实验中发现台阶后有一个流速降低的区域，对此从涡动力学的角度作了解释。
|
| 关 键 词： | 层流 边界层 分离流动 剪切层 后向台阶 |
THE CHARACTERISTICS OF SEPARATED SHEAR LAYER IN A BACKWARD FACING STEP LAMINAR FLOW |
| |
| Lan Shilong,Wang Jinjun.THE CHARACTERISTICS OF SEPARATED SHEAR LAYER IN A BACKWARD FACING STEP LAMINAR FLOW[J].Journal of Beijing University of Aeronautics and Astronautics,1996,22(5):581-584. |
| |
| Authors: | Lan Shilong Wang Jinjun |
| |
| Abstract: | The laser Doppler Velocimeter has been used to measure the shear layer development of laminar separated flow downstream a backward facing step.The distributions of mean velocity,turbulence intensity and the development of shear layer thickness are obtained.The effects of freestream turbulence intensities on the separated flow are also considered.It was found that the streamwise velocity decreases just downstream the step,which was explained the view of vorticity kinematics. |
| |
| Keywords: | laminar boundary layer separated flow shear layer backward facing step |
| 本文献已被 CNKI 维普 等数据库收录！ |
