中文摘要：

这份报纸在一把轴流动的扇子的表演上论述一种投出 streamwise 的片的效果的试验性的调查。在从在中心的后面的边下游的 25% 弦的流动地以不同集体流动的条件用一根 5 洞压力探针被测量。沟片的扇子表演与光滑的片的相比。测量结果显示那：(1 ) 非光滑的片在一样增加扇子的集体流动除了一个近的货摊条件，扼杀条件；(2 ) 非光滑的片在转子经过减少相对全部的压力损失并且在除了近的货摊的集体流动的条件调节的测试增加扇子总数压力上升；(3 ) 当光滑的片被非光滑的代替时，否定好处以一个近的货摊条件被获得。扇子团流动减少 0.9% 当全部压力的上升减少时， 2.4% 在近的货摊调节。

英文摘要：

This paper presents an experimental investigation of effects of a kind of streamwise-grooved blade on the performance of an axial-flow fan. The flow field at 25% chord downstream from the trailing edge at hub was measured using a 5-hole pressure probe at different mass-flow conditions. The fan performance of the groove blades was compared with that of the smooth blades. The measurement results indicate that： （ 1 ） the non-smooth blades increase mass flow of the fan at the same throttle conditions except a near stall condition; （2） the non-smooth blades reduce the relative total pressure loss in the rotor passage and increase the fan＇s total pressure rise at the test mass-flow conditions except the near stall condition; （3） Negative benefits are obtained at a near stall condition when the smooth blades are replaced by the non-smooth ones. The fan mass flow decreases 0.9% while the total-pressure rise decreases 2.4% at the near stall condition.