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Superhydrophobic surfaces with a dual-layer micro- and nanoparticle coating for drag reduction

Author

Listed:
  • Taghvaei, E.
  • Moosavi, A.
  • Nouri-Borujerdi, A.
  • Daeian, M.A.
  • Vafaeinejad, S.

Abstract

We propose a facile and cost effective method for fabricating superhydrophobic surfaces with significant drag reduction in a wide velocity range. A dual structure superhydrophobic aluminum surface with a hydrophobic Al2O3 micro- and nanoparticle coating and also another superhydrophobic surface with a nanoparticle layer coating are fabricated. Then, the resulted drag from each of these surfaces is measured carefully in different velocities and compared with the drag of the as-received aluminum surface. Our results reveal that the surface with the dual structure experiences drag reduction in a wider velocity range compared with the nanoparticle coated sample. Drag reduction of the dual structure substrate is between 77 and 5% for Reynolds number of 4.7 × 104 and 2.35 × 105, respectively. The fabricated dual structure also shows a good durability which makes it favorable for many applications.

Suggested Citation

  • Taghvaei, E. & Moosavi, A. & Nouri-Borujerdi, A. & Daeian, M.A. & Vafaeinejad, S., 2017. "Superhydrophobic surfaces with a dual-layer micro- and nanoparticle coating for drag reduction," Energy, Elsevier, vol. 125(C), pages 1-10.
    • Handle: RePEc:eee:energy:v:125:y:2017:i:c:p:1-10
    DOI: 10.1016/j.energy.2017.02.117
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    Cited by:

    1. Wróblewski, Piotr, 2023. "Reduction of friction energy in a piston combustion engine for hydrophobic and hydrophilic multilayer nanocoatings surrounded by soot," Energy, Elsevier, vol. 271(C).
    2. Huang, Shengxian & Hu, Yu & Wang, Ying, 2021. "Research on aerodynamic performance of a novel dolphin head-shaped bionic airfoil," Energy, Elsevier, vol. 214(C).

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