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Study on the Effects of Microstructural Surfaces on the Attachment of Moving Microbes

Author

Listed:
  • Hongyue Yang

    (Department of Power Engineering, North China Electric Power University, Baoding 071003, China)

  • Ji Qian

    (College of Horticulture, Hebei Agricultural University, Baoding 071000, China)

  • Ming Yang

    (College of Life Sciences, Hebei Agricultural University, Baoding 071001, China)

  • Chunxi Li

    (Department of Power Engineering, North China Electric Power University, Baoding 071003, China)

  • Hengfan Li

    (Department of Power Engineering, North China Electric Power University, Baoding 071003, China)

  • Songling Wang

    (Department of Power Engineering, North China Electric Power University, Baoding 071003, China)

Abstract

The research of marine antifouling is mainly conducted from the aspects of chemistry, physics, and biology. In the present work, the movement model of microorganisms along or against the flow direction on the microstructural surface was established. The model of globose algae with a diameter of 5 μm in the near-wall area was simulated by computational fluid dynamics (CFD), and the fluid kinematic characteristics and shear stress distribution over different-sized microstructures and in micropits were compared. Simulation results revealed that the increase of the β value (height to width ratio) was prone to cause vortexes in micropits. In addition, the closer the low-velocity region of the vortex center to the microstructural surface, the more easily the upper fluid of the microstructure slipped in the vortex flow and reduced the microbial attachment. Moreover, the shear stress in the micropit with a height and width of 2 μm was significantly higher than those in others; thus, microbes in this micropit easily fell off.

Suggested Citation

  • Hongyue Yang & Ji Qian & Ming Yang & Chunxi Li & Hengfan Li & Songling Wang, 2020. "Study on the Effects of Microstructural Surfaces on the Attachment of Moving Microbes," Energies, MDPI, vol. 13(17), pages 1-13, August.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:17:p:4421-:d:404689
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    References listed on IDEAS

    as
    1. Simone Pedrazzi & Giulio Allesina & Alberto Muscio, 2018. "Are Nano-Composite Coatings the Key for Photovoltaic Panel Self-Maintenance: An Experimental Evaluation," Energies, MDPI, vol. 11(12), pages 1-13, December.
    2. Yukun Lv & Weiping Zhao & Jingang Li & Yazhao Zhang, 2017. "Simulation of Contamination Deposition on Typical Shed Porcelain Insulators," Energies, MDPI, vol. 10(7), pages 1-13, July.
    3. Zhe Yan & Yan Li, 2018. "A Comprehensive Study of Dynamic and Heat Transfer Characteristics of Droplet Impact on Micro-Scale Rectangular Grooved Surface," Energies, MDPI, vol. 11(6), pages 1-17, May.
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