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A Numerical Analysis of Flow Dynamics Improvement in a Blower via Simple Integration of Bell Mouth and Nose Cone Structures

Author

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  • Junseon Park

    (Department of Mechanical Engineering, Graduate School, Chung-Ang University, Seoul 06974, Republic of Korea
    These authors contributed equally to this work.)

  • Jiun Yeom

    (Department of Mechanical Engineering, Graduate School, Chung-Ang University, Seoul 06974, Republic of Korea
    These authors contributed equally to this work.)

  • Seongyeol Baeck

    (Department of Mechanical Engineering, Graduate School, Chung-Ang University, Seoul 06974, Republic of Korea)

  • Seungjin Lee

    (Department of Mechanical Engineering, Graduate School, Chung-Ang University, Seoul 06974, Republic of Korea)

  • Joong Yull Park

    (Department of Mechanical Engineering, Graduate School, Chung-Ang University, Seoul 06974, Republic of Korea
    Department of Intelligent Energy and Industry, Graduate School, Chung-Ang University, Seoul 06974, Republic of Korea)

Abstract

Blowers, essential for aerator operation, are pivotal mechanical devices that induce airflow through an impeller. Extensive research has explored impeller geometrical parameters, such as size, angle, and blade count. However, limited attention has been paid to the synergic effect of optimizing the bell mouth of the blower inlet and the nose cone of the impeller eye. This study utilized computational fluid dynamics (CFDs) to analyze the impact of the bell mouth and nose cone on the blower through a geometric case study and evaluate the synergy between these components. A bell mouth decreases the wake by 91.76%, and a nose cone decreases the stagnation at the impeller eye and expands the effective impeller area by 76.29%. Moreover, this study demonstrated a significant synergistic effect between the bell mouth and nose cone, which reduced the head loss by 81.4% compared with the base model. This study presents a simple and effective method to improve blower efficiency and reduce power consumption by applying aerodynamically designed bell mouths and nose cones to blowers.

Suggested Citation

  • Junseon Park & Jiun Yeom & Seongyeol Baeck & Seungjin Lee & Joong Yull Park, 2025. "A Numerical Analysis of Flow Dynamics Improvement in a Blower via Simple Integration of Bell Mouth and Nose Cone Structures," Energies, MDPI, vol. 18(7), pages 1-14, April.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:7:p:1830-:d:1628212
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    References listed on IDEAS

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    1. Longo, Stefano & d’Antoni, Benedetto Mirko & Bongards, Michael & Chaparro, Antonio & Cronrath, Andreas & Fatone, Francesco & Lema, Juan M. & Mauricio-Iglesias, Miguel & Soares, Ana & Hospido, Almudena, 2016. "Monitoring and diagnosis of energy consumption in wastewater treatment plants. A state of the art and proposals for improvement," Applied Energy, Elsevier, vol. 179(C), pages 1251-1268.
    2. Lee, Young-Tae & Lim, Hee-Chang, 2016. "Performance assessment of various fan ribs inside a centrifugal blower," Energy, Elsevier, vol. 94(C), pages 609-622.
    3. Whale, Jonathan, 2009. "Design and construction of a simple blade pitch measurement system for small wind turbines," Renewable Energy, Elsevier, vol. 34(2), pages 425-429.
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