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Effects of composite bionic airfoil on aerodynamic performance and noise of axial fans for air conditioners
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Shuailing LI1, Shuihua CHAI2, Chenye TIAN1, Yixin JIANG1, Qi LU2, Yuefei LI3, Yandong WU3, Xiaomin LIU1
Fluid Machinery | 2025, 53(6) : 21 - 30
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Fluid Machinery | 2025, 53(6): 21-30
Effects of composite bionic airfoil on aerodynamic performance and noise of axial fans for air conditioners
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Shuailing LI1, Shuihua CHAI2, Chenye TIAN1, Yixin JIANG1, Qi LU2, Yuefei LI3, Yandong WU3, Xiaomin LIU1
Affiliations
  • 1School of Energy and Power Engineering，Xi'an Jiaotong University，Xi'an 710049，China
  • 2Ningbo Langdi Impeller Machinery Co.，Ltd.，Ningbo 315480，China
  • 3Guangdong Midea Heating & Ventilating Equipment Co.，Ltd.，Shunde 528311，China
Published: 2025-06-30 doi: 10.3969/j.issn.1005-0329.2025.06.004
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To further enhance aerodynamic efficiency and effectively reduce noise of air‑conditioning axial fans，a cross‑species multi‑element bionic design was applied to fan blades by combining the superior flight characteristics of seagull airfoils with the noise‑reducing non‑smooth functional structures of butterfly wing surfaces.First，CFD simulated internal flow characteristics and aerodynamic performance，with numerical model validity confirmed through experimental comparisons.Subsequently，large eddy simulation （LES） and FW-H acoustic analogy methods predicted noise levels of fans with composite bionic blades.Results demonstrate that cross‑species composite blades effectively reduce flow separation losses at blade tip clearances and decrease surface pressure fluctuations.Compared to the prototype fan at identical conditions （rotational speed 730 r/min），the composite blade fan shows：9.07% higher aerodynamic efficiency，126.4 m3/h increased airflow，70.2 W reduced power consumption，and 2.6 dB noise reduction.This study provides solution references for axial fan blade design and performance optimization.

axial fan  /  seagull wing airfoil  /  butterfly wing trailing edge  /  flow control  /  bionic design  /  aerodynamic performance  /  noise
李帅领, 柴水华, 田晨晔, 姜怡欣, 陆琪, 李跃飞, 吴彦东, 刘小民. 复合仿生翼型对空调器用轴流风机气动性能和噪声的影响. 流体机械, 2025 , 53 (6) : 21 -30 . DOI: 10.3969/j.issn.1005-0329.2025.06.004
Shuailing LI, Shuihua CHAI, Chenye TIAN, Yixin JIANG, Qi LU, Yuefei LI, Yandong WU, Xiaomin LIU. Effects of composite bionic airfoil on aerodynamic performance and noise of axial fans for air conditioners[J]. Fluid Machinery, 2025 , 53 (6) : 21 -30 . DOI: 10.3969/j.issn.1005-0329.2025.06.004
Appendix
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Year 2025 volume 53 Issue 6
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35
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Article Info
doi: 10.3969/j.issn.1005-0329.2025.06.004
  • Receive Date：2024-11-01
  • Online Date：2026-10-20
  • Published：2025-06-30
Article Data
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History
  • Received：2024-11-01
  • Revised：2025-01-27
Affiliations
    1School of Energy and Power Engineering，Xi'an Jiaotong University，Xi'an 710049，China
    2Ningbo Langdi Impeller Machinery Co.，Ltd.，Ningbo 315480，China
    3Guangdong Midea Heating & Ventilating Equipment Co.，Ltd.，Shunde 528311，China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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