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Aerodynamic Performance Optimization of Centrifugal Fan Blade for Air System of Self-Propelled Cotton-Picking Machine

Author

Listed:
  • Wenping Shao

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China)

  • Jingan Feng

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China)

  • Feng Zhang

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China)

  • Shu Wang

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China)

  • Yuhang Li

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China)

  • Jiangfeng Lv

    (College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China)

Abstract

To enhance the working efficiency and aerodynamic performance of the centrifugal fan in the air system of a cotton picker, a new type of centrifugal fan blade was designed by extracting the mid-arc section from the prototype blade and integrating an airfoil, which was transplanted and coupled to the mid-arc section. The design aimed to improve the airflow characteristics and performance of the centrifugal fan. By combining experimental data from centrifugal fans used in existing cotton-picker air systems and employing computational fluid dynamics (CFD) methods, the internal flow field structure of the centrifugal fan was simulated. This study focused on investigating the aerodynamic performance of the new centrifugal fan blade and its impact on improving the internal flow patterns within the centrifugal fan. The results of the flow field visualization analysis indicate that the new blade design exhibits excellent aerodynamic performance, improving the flow distribution within the centrifugal fan. It enhances the uniformity of the outlet airflow, reduces the occurrence of localized “jet-wake” phenomena at the impeller’s outlet, suppresses the generation and development of vortices in the flow channel, and reduces local energy losses within the impeller. These improvements contribute to an increase in the fan’s efficiency. Under rated operating conditions, the efficiency of the prototype fan was measured at 60.3%, while the optimized fan achieved an efficiency of 64.8%. This signifies a significant improvement in the efficiency of the centrifugal fan.

Suggested Citation

  • Wenping Shao & Jingan Feng & Feng Zhang & Shu Wang & Yuhang Li & Jiangfeng Lv, 2023. "Aerodynamic Performance Optimization of Centrifugal Fan Blade for Air System of Self-Propelled Cotton-Picking Machine," Agriculture, MDPI, vol. 13(8), pages 1-15, August.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:8:p:1579-:d:1212858
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    References listed on IDEAS

    as
    1. Ruijie Shi & Fei Dai & Wuyun Zhao & Xiaolong Liu & Tianfu Wang & Yiming Zhao, 2023. "Optimal Design and Testing of a Crawler-Type Flax Combine Harvester," Agriculture, MDPI, vol. 13(2), pages 1-21, January.
    2. Ce Zhang & Duanyang Geng & Haigang Xu & Xinao Li & Jiarui Ming & Duanxin Li & Qihuan Wang, 2023. "Experimental Study on the Influence of Working Parameters of Centrifugal Fan on Airflow Field in Cleaning Room," Agriculture, MDPI, vol. 13(7), pages 1-17, July.
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