进气温度畸变对某发动机稳定性影响的研究

本文采用有效的畸变传递模型，就进气温度畸变对某发动机稳定性和性能的影响进行了较深入的数值研究．详细地分析了温度畸变对发动机稳定性和性能的影响，探讨了温度畸变在发动机系统中的传递和分布情况。结果表明：对于发动机进口空间温度畸变，发动机稳定裕度损失更多地取决于畸变强度而非周向范围：向对于与时间相关的温度畸变，发动机进口温升率比周向范围的影响更为显著。

Study on the Effects of Inlet Temperature Distortion on Stability of an Engine

This paper uses the effective distortion-transfer model to present the numerical investigation on the effect of the inlet temperature distortion upon the stability and performance of an aero-engine. Detailed calculation and analysis were made to the results of temperature distortion on the stability and performance of an aero-engine. The transfer and distribution of the temperature distortion in the aero-engine system were also discussed and analyzed. The calculation result indicates that the loss of losing speed margin is more decided by distortion intensity, but not the circumferential range. The inlet temperature increase rate is more effective than circumferential range for the temperature distortion relevant to time.