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Numerical Study on the Influence of Mass and Stiffness Ratios on the Vortex Induced Motion of an Elastically Mounted Cylinder for Harnessing Power

Author

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  • Vidya Chandran

    (Department of Mechanical Engineering, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu 600018, India)

  • Sekar M.

    (Department of Mechanical Engineering, AAA College of Engineering and Technology, Sivakasi, Tamil Nadu 600018, India)

  • Sheeja Janardhanan

    (Department of Mechanical Engineering, SCMS School of Engineering and Technology, Ernakulam, Kerala 673307, India)

  • Varun Menon

    (Department of Computer Science and Engineering, SCMS School of Engineering and Technology, Ernakulam, Kerala 673307, India)

Abstract

Harnessing the power of vortices shed in the wake of bluff bodies is indeed a boon to society in the face of fuel crisis. This fact serves as an impetus to develop a device called a hydro vortex power generator (HVPG), comprised of an elastically mounted cylinder that is free to oscillate in the cross-flow (CF) direction even in a low velocity flow field. The oscillatory motions in turn can be converted to useful power. This paper addresses the influence of system characteristics viz. stiffness ratio ( k* ) and mass ratio ( m* ) on the maximum response amplitude of the elastically mounted cylinder. Computational fluid dynamics (CFD) simulations have been used here to solve a two way fluid–structure interaction (FSI) problem for predicting the trend of variation of the non-dimensional amplitude Y/D with reduced velocity U r through a series of simulations. Maximum amplitude motions have been attributed to the lowest value of m* with U r = 8. However, the maximum lift forces correspond to U r = 4, providing strong design inputs as well as indicating the best operating conditions. The numerical results have been compared with those of field tests in an irrigation canal and have shown reasonable agreement.

Suggested Citation

  • Vidya Chandran & Sekar M. & Sheeja Janardhanan & Varun Menon, 2018. "Numerical Study on the Influence of Mass and Stiffness Ratios on the Vortex Induced Motion of an Elastically Mounted Cylinder for Harnessing Power," Energies, MDPI, vol. 11(10), pages 1-23, September.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:10:p:2580-:d:172401
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    References listed on IDEAS

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    1. Wenlong Tian & Zhaoyong Mao & Fuliang Zhao, 2017. "Design and Numerical Simulations of a Flow Induced Vibration Energy Converter for Underwater Mooring Platforms," Energies, MDPI, vol. 10(9), pages 1-20, September.
    2. Xinyu An & Baowei Song & Wenlong Tian & Congcong Ma, 2018. "Design and CFD Simulations of a Vortex-Induced Piezoelectric Energy Converter (VIPEC) for Underwater Environment," Energies, MDPI, vol. 11(2), pages 1-15, February.
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    Cited by:

    1. Iro Malefaki & Efstathios Konstantinidis, 2020. "Assessment of a Hydrokinetic Energy Converter Based on Vortex-Induced Angular Oscillations of a Cylinder," Energies, MDPI, vol. 13(3), pages 1-16, February.
    2. Lin Ding & Qunfeng Zou & Li Zhang & Haibo Wang, 2018. "Research on Flow-Induced Vibration and Energy Harvesting of Three Circular Cylinders with Roughness Strips in Tandem," Energies, MDPI, vol. 11(11), pages 1-17, November.
    3. Gong, Ying & Shan, Xiaobiao & Luo, Xiaowei & Pan, Jia & Xie, Tao & Yang, Zhengbao, 2019. "Direction-adaptive energy harvesting with a guide wing under flow-induced oscillations," Energy, Elsevier, vol. 187(C).

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