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风扇部件性能退化及其对整机性能影响研究
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Abstract:
本文对发动机风扇部件性能衰退的诱因进行分析，得到导叶调整不到位和叶片粗糙度增大是影响风扇性能退化的两个关键因素。通过流场仿真技术研究了两种因素对性能参数的影响，以及特性曲线的变化。并以建立的发动机稳态模型为基础，通过修改风扇特性曲线，研究了风扇性能退化后对发动机整机性能的变化。可以为风扇性能及整机衰退研究提供参考。
The causes of performance degradation of fan component are analyzed. The two key factors that affect the performance degradation of fan are guide vane adjustment and the increase of blade roughness. The influence of the two factors on the performance parameters and the change of the characteristic curve are studied by flow field simulation technology. Based on the steady-state model of the engine, the performance change of the whole engine after the performance degradation of the fan is studied by modifying the characteristic curve of fan. It can provide a reference for the study of fan performance and performance degradation of the whole engine.
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