外部扰动影响下风扇和压气机稳定裕度的计算方法

Calculation method for the fan and compressor surge margin in the effect of outside-flow disturb

关键词:  燃气涡轮发动机  风扇  压气机  气动稳定性  稳定性计算

Key words:  Gas turbine engine  Fan  Air compressor  Aerodynamic stability  Stability calculation.

摘要:

为了定量评定燃气涡轮发动机的风扇和压气机的气动稳定性 ,分析了影响风扇和压气机稳定性的外部扰动参数 ,介绍了工程中计算气动扰动和热扰动对风扇和压气机的影响所采用的标准型扰动 ,给出了在外部气动扰动和热扰动作用下的风扇和压气机的稳定裕度变化的一种计算方法 ,可供工程研制中参考

Abstract:

In order to assess pneumatic stability of fan or compressor in gas turbine engine, the pneumatic stability parameters were analyzed. Described standard pneumatic disturb and heat disturb used in engineering. A calculation method which can be referenced in engineering for the fan and compressor pneumatic stability in the effect of outside flow disturb was given out.