| 迷宫通道内部流动和泄漏特性的数值分析 |
| |
| 引用本文： | 黄守龙,马毓义,武晓松,徐诚.迷宫通道内部流动和泄漏特性的数值分析[J].航空动力学报,1995,10(2):135-138,199. |
| |
| 作者姓名： | 黄守龙 马毓义 武晓松 徐诚 |
| |
| 作者单位： | 1.华中理工大学 |
| |
| 摘 要： | 求解非定常N-S方程, 数值预测了深宽比H/W分别为0.1、0.3和0.5的单空腔直齿迷宫通道的内部流动, 计算结果展示了流动结构的振荡及出口泄漏量下降和回升的波动。3种结构的密封效果优劣与泄漏量波动幅度大小相对应, 其排列顺序是深宽比H/W分别为0.3、0.5和0.1的结构。还讨论了涡运动与涡合并、分离泡的迁移、射流的弯曲及对空腔壁面的冲击等复杂物理过程的内在联系, 分析了射流冲击所产生的多种效应对增加能耗减小泄漏的作用。
|
| 关 键 词： | 迷宫密封 振荡流动 数值分析 |
| 收稿时间： | 5/1/1994 12:00:00 AM |
| 修稿时间： | 1994/12/1 0:00:00 |
NUMERICAL ANALYSIS OF FLOW AND LEAKAGE IN LABYRINTH SEAL |
| |
| Huang Shoulong,Ma Yuyi,Huang Shoulong and Ma Yuyi.NUMERICAL ANALYSIS OF FLOW AND LEAKAGE IN LABYRINTH SEAL[J].Journal of Aerospace Power,1995,10(2):135-138,199. |
| |
| Authors: | Huang Shoulong Ma Yuyi Huang Shoulong and Ma Yuyi |
| |
| Institution: | 1.Naional Lab. of Coal Combustion Huazhong University of Science & Technology,Wuhan,4300742.Mechanical College,Nanjing University of Science & Technology |
| |
| Abstract: | The unsteady Navier stokes equations are solved to predict numerically the internal flow of single cavity labyrinth channel with depth to width ratios H/W=0 1,0 3 and 0 5.The numerical results demonstrate the oscillation of the flow structure and fluctuation of the exit leakage rate.It is shown that the seal efficiency is relevant to the amplitude of leakage fluctuation,furthermore,the sequence of H/W from 0 3,0 5 to 0 1 is also the order of both increasing seal efficiency and increasing amplitude of leakage fluctuation.Also,the complex physics,including motion and mergences of vortex,migration of separation bubble,bending and impact of jet,is discussed,and the influence of impact effects on the increasement of energy dissipation and decreasement of leakage are analysed. |
| |
| Keywords: | Labyrinth seal oscillation flow Numerical analysis |
|
| 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 |
|
