| WANG Jia-wen 1 ， HUANG Xiang-hua 2 ， JI Run-min 2.Correction Method of Component Characteristics for Gas Turbine Based on Characteristic Data[J].航空发动机,2024,50(3):114-121 |
| Correction Method of Component Characteristics for Gas Turbine Based on Characteristic Data |
| DOI： |
| Key Words:component level model characteristic correction off-design point matching gas turbine engine |
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| Abstract: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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