王佳雯1 ,黄向华 2 ,嵇润民 2.基于特性数据的燃气涡轮发动机修正方法[J].航空发动机,2024,50(3):114-121
基于特性数据的燃气涡轮发动机修正方法
Correction Method of Component Characteristics for Gas Turbine Based on Characteristic Data
  
DOI:
中文关键词:  部件级模型  特性修正  非设计点匹配  燃气涡轮发动机
英文关键词:component level model  characteristic correction  off-design point matching  gas turbine engine
基金项目:
作者单位
王佳雯1 ,黄向华 2 ,嵇润民 2 1.中国航发动力控制系统研究所江苏无锡 214063 2.南京航空航天大学 能源与动力学院南京 210016 
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中文摘要:
      针对燃气涡轮发动机部件特性不匹配造成的模型计算参数与实际试车参数之间的误差问题,提出一种基于特性数据的 燃气涡轮发动机部件特性修正方法。通过变缩放参考中心依次对设计点、慢车点进行整体修正,实现特性图在整个工况范围内的 大致覆盖。通过局部修正非设计点所在的由相邻等转速线和β线所确定矩形域的特性数据,并采用插值法和拟合椭圆曲线法对 等转速线的其他数据点进行补充修正,得到与试车数据匹配的特性图。以涡扇发动机为研究对象进行仿真验证,结果表明:所提 出的特性修正方法能准确、快速地对发动机部件特性进行修正,与试车数据相比,修正后的模型各稳态点误差精度均在1.5%以 内,满足工程精度需求,可用于发动机控制系统研究。
英文摘要:
      A gas turbine engine component characteristic correction method based on characteristic data is proposed to address the problem of errors between the model calculation parameters and the actual test parameters caused by the mismatch of gas turbine engine component characteristics. By varying the scaling reference center, overall corrections of the design point and the idle point are carried out sequentially to achieve a rough coverage of the characteristic map over the entire range of working conditions. By locally correcting the characteristic data of the rectangular area defined by the adjacent constant speed lines and β lines where the off-design points are located, and additionally correcting other data points of the constant speed line by interpolation method and ellipse fitting method, the characteristic map matching with the test data obtained finally. The simulation verification was conducted on a turbofan engine, and the results show that the method can accurately and quickly correct the engine component characteristics. Compared with the test data, the error of each corrected steady-state point is within 1.5%, which meets the engineering accuracy requirements and can be used for engine control system research.
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