Enhancing Low-Velocity Wind Energy Harvesting through Semi-Circular Passive Turbulence Controls on Bluff Bodies

Authors

  • Md. Mohiuddin Department of Mechanical Engineering, Khulna University of Engineering & Technology, Khulna-9203, Bangladesh
  • Zahir U. Ahmed Department of Mechanical Engineering, Khulna University of Engineering & Technology, Khulna-9203, Bangladesh
  • Mohammad Ilias Inam Department of Mechanical Engineering, Khulna University of Engineering & Technology, Khulna-9203, Bangladesh
  • Md. Rhyhanul Islam Department of Mechanical Engineering, Iowa State University of Science and Technology, Ames, IA 50011, USA

DOI:

https://doi.org/10.38032/scse.2025.3.114

Keywords:

Energy Harvesting, Vortex-Induced Vibration, Flow-Induced Vibration, Piezoelectricity, Low Velocity, Cantilever, Passive Turbulence Control (PTC)

Abstract

The exponential growth of small-scale electronic devices and the limitations of battery life that necessitate frequent replacements in remote locations have driven researchers to develop various energy harvesting techniques. Conventional wind turbines are inefficient for capturing low-velocity wind energy due to their complexity and dependence on high wind speeds. Therefore, vortex-induced energy harvesting has attracted considerable attention as an alternative, but its performance is highly dependent on wind velocity, generating high output power in a narrow range and almost none at other velocities. This study aims to enhance this range by integrating two semi-circular passive turbulence control (SPTC) devices at different circumferential positions on a cylindrical bluff body, symmetrically aligned with the stagnation line. Experimental studies conducted in a subsonic wind tunnel demonstrated that while SPTC placements at 45° and 90° reduced performance, positions at 60° and 75° significantly expanded the operational range and increased output power. These configurations also showed continuous power increases with wind speed, offering a potential solution to the limitations of traditional cylindrical bluff bodies.

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References

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Published

11.11.2025

How to Cite

[1]
M. Mohiuddin, Z. U. Ahmed, M. I. Inam, and M. R. Islam, “Enhancing Low-Velocity Wind Energy Harvesting through Semi-Circular Passive Turbulence Controls on Bluff Bodies”, SCS:Engineering, vol. 3, pp. 420–424, Nov. 2025, doi: 10.38032/scse.2025.3.114.

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