在目前压气机Ｓ２流面准三元的工程设计中，广泛采用流函数法、流线曲率和欧拉法三种计算方法。从方程体系、计算方法上进行了比较，同时对某三级轴流压气机进行了校核，并对三种方法的计算结果进行了比较分析，给出了六条相应的结论。但到目前为止，仍没有足够的实验数据表明哪一种方法更好。建议在设计过程中应抓住问题的主要矛盾，灵活运用三种方法分析问题。

In the design of the quasi three dimensional of S 2 stream surface in compressors,three calculation methods namely the flow function method,the streamline curvature solution method and the Euler method have been adopted widely.In terms of the system of equation and the method of calculation,these methods were compared with each other and with the result of a three stage axial flow compressor.At last,six related conclusions were drawn.At pressent,there are not enough data to show which method is better.It was suggested that these methods should be used properly in terms of the basic contradiction in design.

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