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Effects of the Second-Stage of Rotor with Single Abnormal Blade Angle on Rotating Stall of a Two-Stage Variable Pitch Axial Fan

Author

Listed:
  • Lei Zhang

    (School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China)

  • Liang Zhang

    (School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China)

  • Qian Zhang

    (School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China)

  • Kuan Jiang

    (School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China)

  • Yuan Tie

    (School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China)

  • Songling Wang

    (School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China)

Abstract

It is of great value to study the impact of abnormal blade installation angle on the inducement mechanism of rotating stall to achieve the active control of rotating stall in an axial fan. Based on throttle value function and SST k-ω turbulence model, numerical simulations of the unsteady flow process in stall condition of an axial flow fan with adjustable vanes were carried out, and the influence mechanism of abnormal stagger angle of a single blade in the second stage rotor on induced position and type of stall inception and evolution process of rotating stall were analyzed. The results show that compared with synchronous adjustment of blade angle, the blade with abnormal stagger angle will cause the increase of flow rate at the beginning of stall and make the fan fall into an unstable condition in advance. The existence of blade with abnormal angle does not cause the change of the induced position and type of stall inception and the inducement mechanism of rotating stall, which are the same as the axial fan with normal blade angle. Moreover, the single blade with abnormal deviation angle has important impacts on the 3D unsteady evolution process from stall inception to stall cell formation in two rotors.

Suggested Citation

  • Lei Zhang & Liang Zhang & Qian Zhang & Kuan Jiang & Yuan Tie & Songling Wang, 2018. "Effects of the Second-Stage of Rotor with Single Abnormal Blade Angle on Rotating Stall of a Two-Stage Variable Pitch Axial Fan," Energies, MDPI, vol. 11(12), pages 1-18, November.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:12:p:3293-:d:185470
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    References listed on IDEAS

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    1. Lei Zhang & Chuang Yan & Ruiyang He & Kang Li & Qian Zhang, 2017. "Numerical Study on the Acoustic Characteristics of an Axial Fan under Rotating Stall Condition," Energies, MDPI, vol. 10(12), pages 1-13, November.
    2. Li, Chunxi & Lin, Qing & Ding, Xueliang & Ye, Xuemin, 2016. "Performance, aeroacoustics and feature extraction of an axial flow fan with abnormal blade angle," Energy, Elsevier, vol. 103(C), pages 322-339.
    3. Ye, Xuemin & Ding, Xueliang & Zhang, Jiankun & Li, Chunxi, 2017. "Numerical simulation of pressure pulsation and transient flow field in an axial flow fan," Energy, Elsevier, vol. 129(C), pages 185-200.
    4. Giorgio Pavesi & Giovanna Cavazzini & Guido Ardizzon, 2016. "Numerical Analysis of the Transient Behaviour of a Variable Speed Pump-Turbine during a Pumping Power Reduction Scenario," Energies, MDPI, vol. 9(7), pages 1-15, July.
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    Cited by:

    1. Wang, Youhao & Sun, Lihui & Guo, Chang & He, Suoying & Gao, Ming & Xu, Qinghua & Zhang, Qiang, 2023. "Vibration characteristics and strength analysis of two-stage variable-pitch axial-flow fan based on fluid-solid coupling method," Energy, Elsevier, vol. 284(C).
    2. Xuemin Ye & Fuwei Fan & Ruixing Zhang & Chunxi Li, 2019. "Prediction of Performance of a Variable-Pitch Axial Fan with Forward-Skewed Blades," Energies, MDPI, vol. 12(12), pages 1-20, June.
    3. Yong-In Kim & Sang-Yeol Lee & Kyoung-Yong Lee & Sang-Ho Yang & Young-Seok Choi, 2020. "Numerical Investigation of Performance and Flow Characteristics of a Tunnel Ventilation Axial Fan with Thickness Profile Treatments of NACA Airfoil," Energies, MDPI, vol. 13(21), pages 1-29, November.
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    6. Djordje S. Čantrak & Novica Z. Janković, 2022. "Turbulence Structure and Dynamics Investigation of Turbulent Swirl Flow in Pipe Using High-Speed Stereo PIV Data," Energies, MDPI, vol. 15(15), pages 1-13, July.

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