CAS压气机转子跨声速流场全三元解的分析及其与准三元解和双焦点激光测量值的比较

ANALYSES OF FULL 3D S_1-S_2 ITERATIVE SOLUTION IN CAS TRANSONIC COMPRESSOR ROTOR AND COMPARISON WITH QUASI-3D S_1-S_(2m) ITERATIVE SOLUTION AND L2F MEASUREMENT

文献[1]对CAS跨声速压气机转子内部流场进行了s_1和s_2两类流面计算,得到了全三元迭代解。本文详细描绘、分析了文献[1]中s_1和s_2流面以及与之准正交的截面P_3上气流参量的变化规律及空间激波的形状和位置。将全三元解分别与准三元解和L2F测量值进行比较表明:两种解法的结果是相近的,理论计算与实验结果也是比较接近的。但全三元解比准三元解能更准确地反映三元效应。

Full 3D S1-S2 iterative solution in CAS transonic compressor rotor has been analyzed in detail by describing the variations of flow parameters on S1 and S2 surfaces and on the quasi-normal plane P3 and the structure of the spatial shock. Comparison of the full 3D solution with the quasi -3D solution and the L2F measurement shows that the results of the two iterative calculations are close to each other, but the former has stronger 3D effect than the later, and they are in good agreement with the measurement. For medium transonic compressors, the quasi-3D calculation method can be used for 3D blade design and general analysis work.