| 一种应用滑动最小二乘求取压气机特性的方法 |
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| 引用本文： | 杨欣毅,沈伟,刘海峰,董可海.一种应用滑动最小二乘求取压气机特性的方法[J].航空动力学报,2009,24(8):1741-1746. |
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| 作者姓名： | 杨欣毅 沈伟 刘海峰 董可海 |
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| 作者单位： | 海军航空工程学院 飞行器工程系, 烟台 264001 |
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| 摘 要： | 发动机性能仿真需要对压气机等部件特性进行离散和插值计算, 通常低转速范围的特性还需要外推.对此提出改进, 用三维曲面代替转速线表达压气机特性.从某小流量发动机起动加速试验数据中提取压气机低转速特性数据.以这些数据和已知特性数据为依据, 利用滑动最小二乘法拟合计算获得压气机特性曲面.该方法能够获得全部转速范围内的压气机特性, 精度高, 且不需插值计算, 非常适用于发动机起动加速过程的仿真计算.
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| 关 键 词： | 滑动最小二乘法 航空发动机 压气机 部件特性 |
| 收稿时间： | 4/6/2009 12:00:00 AM |
| 修稿时间： | 6/6/2009 12:00:00 AM |
Compressor characteristics generation method using moving least square |
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| YANG Xin-yi,SHEN Wei,LIU Hai-feng and DONG Ke-hai.Compressor characteristics generation method using moving least square[J].Journal of Aerospace Power,2009,24(8):1741-1746. |
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| Authors: | YANG Xin-yi SHEN Wei LIU Hai-feng and DONG Ke-hai |
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| Institution: | Department of Aerocraft Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, China |
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| Abstract: | Compressor characteristics maps need to be interpolated and dispersed during gas turbine engine performance simulation.Meanwhile the maps usually need to be extrapolated as the characteristics data of low rotational speed are absent.An improved method of using dimensional surface to illustrate compressor characteristics instead of rotational speed lines was proposed.Characteristics data were calculated from start-up test results of a small gas turbine engine.Based on these data and the known characteristics... |
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| Keywords: | moving least square (MLS) aero engine compressor component characteristics |
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