发动机进气总压畸变流场中压力脉动分析

Analysis about the Total Pressure Pulsation in the Distorted Flow Field at the Inlet of Aeroengine

总压脉动强度和涡旋尺度是描述发动机进气总压畸变流场脉动强度和大小的主要参数,对于发动机的稳定裕度有着较大的影响,了解它们在畸变流场中的变化趋势及其关系将有助于发动机稳定性控制研究。本文分析了总压脉动强度和涡旋尺度在进气总压畸变流场中随湍流发展的一些变化趋势及其相互关系。

Total pressure pulsation intensity and eddy scale, which are the primary parameters used for describing the pulsation intensity and the size of the distorted flow field, affect the stall margin of engine greatly. It would be useful in the research of engine stability control by realizing the change trend in the distorted flow field and their relationship. Consequently, the change trend of the total pressure pulsation intensity and eddy scale in accordance of the growing up of the inflow was discussed, and finally, the relationship of them was also revealed.