| Effects of a Kind of Non-smooth Blade on the Performance of an Axial Fan |
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| 作者姓名： | Hongwei MA Jibo GUO School of Jet Propulsion Beijing University of Aeronautics and Astronautics Beijing China National Key Laboratory on Aero-Engines Beijing China |
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| 作者单位： | Hongwei MA Jibo GUO School of Jet Propulsion，Beijing University of Aeronautics and Astronautics，Beijing 100083，China National Key Laboratory on Aero-Engines，Beijing，100083，China |
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| 摘 要： | This paper presents an experimental investigation of effects of a kind of streamwise-grooved blade on theperformance of an axial-flow fan.The flow field at 25% chord downstream from the trailing edge at hub wasmeasured using a 5-hole pressure probe at different mass-flow conditions.The fan performance of the grooveblades was compared with that of the smooth blades.The measurement results indicate that:(1)the non-smoothblades increase mass flow of the fan at the same throttle conditions except a near stall condition;(2)thenon-smooth blades reduce the relative total pressure loss in the rotor passage and increase the fan's total pressurerise at the test mass-flow conditions except the near stall condition;(3)Negative benefits are obtained at a nearstall 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.
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| 关 键 词： | 轴扇 非光滑叶片 空气动力学特性 实验研究 |
Effects of a kind of non-smooth blade on the performance of an axial fan |
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| Hongwei MA Jibo GUO School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing ,China National Key Laboratory on Aero-Engines,Beijing,,China.Effects of a Kind of Non-smooth Blade on the Performance of an Axial Fan[J].Journal of Thermal Science,2006,15(3):200-205. |
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| Authors: | Hongwei Ma Jibo Guo |
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| Affiliation: | (1) School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing, 100083, China;(2) National Key Laboratory on Aero-Engines, Beijing, 100083, China |
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| Abstract: | 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. |
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| Keywords: | axial fan non-smooth blade streamwise groove aerodynamic performance |
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