| 汽轮机末级三维非定常流动数值模拟 |
| |
| 引用本文： | 綦蕾,郑宁,程洪贵.汽轮机末级三维非定常流动数值模拟[J].北京航空航天大学学报,2005,31(2):206-211. |
| |
| 作者姓名： | 綦蕾 郑宁 程洪贵 |
| |
| 作者单位： | 北京航空航天大学 能源与动力工程学院, 北京 100083 |
| |
| 摘 要： | 空冷汽轮机组采用空气作为冷却介质,是一种典型的变工况运行机组.深入了解透平叶片在设计状态和高背压条件下的非定常流动机理,能更好设计空冷汽轮机以及提高叶轮机械的性能和稳定性.主要利用三维粘性非定常数值模拟的方法对设计状态和高背压条件下透平叶片内部的流动进行模拟,并分析了设计状态和高背压条件下非定常流动机理.结果表明,在设计状态动静干涉作用是导致非定常现象产生的主要原因;在高背压条件下动静干涉作用很弱,导致非定常现象不明显.
|
| 关 键 词： | 透平 非定常流动 动静干涉 |
| 文章编号： | 1001-5965(2005)02-0206-06 |
| 收稿时间： | 2004-06-20 |
| 修稿时间： | 2004年6月20日 |
Numerical simulation of the 3-D unsteady flow in the last stage of the steam turbine |
| |
| Qi Lei,Zheng Ning,Cheng Honggui.Numerical simulation of the 3-D unsteady flow in the last stage of the steam turbine[J].Journal of Beijing University of Aeronautics and Astronautics,2005,31(2):206-211. |
| |
| Authors: | Qi Lei Zheng Ning Cheng Honggui |
| |
| Institution: | School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
| |
| Abstract: | Air cooling steam turbine uses air as working fluid, and it works in variable-operating condition. It is important for the design of air cooling steam turbine and the performance and stability of turbine to study unsteady flow mechanism in design and off-design state. The flow of turbine in design and off-design state was simulated by the method of numerical simulation of 3-D viscous flow, and the flow mechanism in design and off-design state was studed. The results show rotor-stator interaction causes unsteady flow in design state, and the rotor-stator interaction in off-design state is weak, the unsteady phenomena is not obvious in off-design state. |
| |
| Keywords: | turbine unsteady flow rotor-stator interaction |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《北京航空航天大学学报》浏览原始摘要信息 |
| 点击此处可从《北京航空航天大学学报》下载免费的PDF全文 |
