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将低马赫数大转角弯叶片数值计算结果与实验结果进行了比较,结果表明计算与实验结果吻合得较好,在计算中弯叶片降低能量损失系数为11%,在实验中弯叶片降低能量损失系数为13%。为了深入讨论压气机中弯叶片的适用条件,在0°迎角下,只改变几何折转角,共做了4套平面叶栅的数值分析,其结果表明大转角弯叶片的效果较为明显,比如在59.5°折转角叶栅中,最佳弯角为30°的正弯叶片降低能量损失系数的17.9%;而在39.5°折转角叶栅中,最佳弯角15°正弯叶片只减小了损失系数的0.7%,当进一步增加弯角时,损失反而增加。可以证明在低马赫数条件下叶型折转角的大小是在压气机中是否使用弯叶片的一个重要参考因素。
Comparing the numerical results of the low Mach Mach number with the experimental results, the results show that the calculated results are in good agreement with the experimental results. The calculated results show that the curved blade reduces the energy loss coefficient by 11%, and the curved blade reduces the energy loss during the experiment The coefficient is 13%. In order to further discuss the applicable conditions of the curved blades in the compressor, only four geometric turning angles were changed at 0 ° angle of attack. A total of 4 sets of plane cascades were numerically analyzed. The results showed that the effect of large curved blades was obvious, In the 59.5 ° turning cascades, the positive bending blades with the best bending angle of 30 ° reduced the energy loss coefficient by 17.9%; while in the 39.5 ° turning cascades, the best bending angle of 15 ° positive bending blades decreased only The loss coefficient of 0.7%, when further increase the corner, the loss increases. It can be demonstrated that the size of the leaf turning angle at low Mach numbers is an important reference for the use of curved blades in the compressor.