压气机特性曲线多项式回归拟合方法  

Polynomial Regression Fitting Method for Characteristic Curve of Compressor

作　　者：代星 赵元松 岳永威[2] 吴垚[3] DAI Xing;ZHAO Yuansong;YUE Yongwei;WU Yao(The 91054 Unit of PLA,Shanghai 200235,China;Aero-Polytechnology Establishment,Beijing 100028,China;The 92602 Unit of PLA,Shanghai 201900,China)

机构地区：[1]91054部队 [2]中国航空综合技术研究所 [3]92602部队

出　　处：《机电设备》2018年第3期58-63,共6页Mechanical and Electrical Equipment

摘　　要：燃气轮机仿真对于压气机特性曲线的精度要求较高,曲线拟合的质量直接影响仿真的效果。根据压气机曲线形状相近、变化趋势固定的特点,运用二步多项式拟合同转速下压比、流量和转速的关系。分析结果表明:该方法原理简单、可行性强,能够满足燃气轮机的计算要求,具有一定的实用价值。High accuracy is required for the compressor characteristic curve while building the simulation model of gas turbine. The quality of curve fitting affects the simulation result directly. According to the characteristics of proximate curve shape and the change regularity of compressor characteristic curves, the two-step polynomial fitting is used to fit the relationship between the pressure ratio, flow rate and rotation speed under the same speed. The analysis results show that the method is simple, feasible, and can meet the calculation requirements of gas turbine. It has certain practical value.

关 键 词：燃气轮机 压气机 特性曲线 曲线拟合 多项式回归 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]