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本文综合了亚音速压气机叶栅试验数据,建立了叶栅落后角、叶栅损失、通流面积阻塞系数和减功系数等随工况参数的变化关系,并用完全径向平衡法及平均截面计算法编制了多级轴流式压气机的特性计算程序。用这两种方法计算了四台压气机,与试验特性相比,在百分之六十设计转速以上,流量偏差一般不大于2％,效率偏差不大于1.5％。同时也表明,只要使用相同的变工况模型,在轮毂比大于0.7时,这两种计算方法所得结果很接近。
In this paper, the subsonic compressor cascade test data are integrated and the relationship between the obliquity of the cascade, the cascade loss, the obstruction coefficient of the flow passage area, the reduction factor and so on is established with the parameters of the working condition. The complete radial balance method and the average section Computation method of multi-stage axial compressor characteristics of the calculation program. Four compressors were calculated by these two methods. Compared with the experimental characteristics, at 60% of design speed, the flow deviation is generally not more than 2% and the efficiency deviation is not more than 1.5%. It also shows that the results obtained by these two methods are very close to each other when the ratio of wheel hub is greater than 0.7, as long as the same variation model is used.