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针对某型高性能风扇第2级转子叶片,采用NUMECA商业软件数值模拟的方法,分析了在叶片吸力面距前缘50%和75%弦长处采用吸气技术前后叶栅总压系数、气流转折角和静压升等方面的变化情况。结果表明:在相同攻角相同Ma下,叶栅总压损失随吸气量的增加逐渐降低;叶栅气流转折角随吸气量的增加逐渐变大;叶栅静压升随吸气量的增加逐渐提高;在6°攻角下,在不同Ma下进行吸气,叶栅总压损失都有所降低。
Aiming at the second-stage rotor blade of a high-performance fan, NUMECA numerical simulation software was used to analyze the relationship between the total pressure coefficient of cascade before and after the suction at 50% and 75% Angular and static pressure rise and other aspects of the changes. The results show that at the same angle of attack Ma, the total pressure loss of cascade decreases with the increase of inspiratory capacity; the angle of turbulence of cascade increases with the increase of inspiratory capacity; the static pressure of cascade increases with the inspiratory capacity Increasing gradually; at 6 ° angle of attack, when inhaling at different Ma, the total pressure loss in cascade decreased.