TY - GEN
T1 - ENERGY HARVESTING BY VORTEX-INDUCED VIBRATIONS OF STRUCTURES WITH DIFFERENT CROSS-SECTIONS
AU - Ali, Ussama
AU - Islam, Md
AU - Janajreh, Isam
N1 - Publisher Copyright:
Copyright © 2023 by ASME.
PY - 2023
Y1 - 2023
N2 - The shape of the structure plays a crucial role in determining its vibration characteristics, such as the amplitude and frequency of vibration. The purpose of this investigation is to explore how the flow-induced vibration behavior and energy harvesting potential are impacted by the cross-sectional shape of a structure. In this work, the cross-sectional shapes of the bluff body considered are circular, square, diamond, and triangle. The reduced velocity (Ur) is varied in the range of 2 – 12. The mass ratio is taken as 1.7, and the damping ratio as 0.016. The hydraulic diameter for all the shapes is kept constant, and the Reynolds number based on the hydraulic diameter is varied in the range of 1.7×104 to 10.3×104 to mimic the flow velocity of the water current in the ocean (0.19 – 1.14 m/s). In this work, water is considered as the flowing fluid, which is supposed to be incompressible and viscous. The flow dynamics of the fluid over a bluff body are described using the unsteady Reynolds Averaged Navier-Stokes equations, and the turbulence is modeled through the SST k–ω turbulence model. Based on the findings, it can be concluded that the shape of the bluff body has a significant impact on both the vibration characteristics, the output power, and the efficiency of energy harvesting. The analysis suggests that circular shapes are ideal for energy harvesting from flow-induced vibrations at low Ur, while diamond shapes are most suitable at high Ur. In this study, the maximum output power of 1.57 W was obtained with a diamond-shaped structure at Ur = 10. Whereas the maximum efficiency of 9.01% was obtained through the circular structure at Ur = 4.
AB - The shape of the structure plays a crucial role in determining its vibration characteristics, such as the amplitude and frequency of vibration. The purpose of this investigation is to explore how the flow-induced vibration behavior and energy harvesting potential are impacted by the cross-sectional shape of a structure. In this work, the cross-sectional shapes of the bluff body considered are circular, square, diamond, and triangle. The reduced velocity (Ur) is varied in the range of 2 – 12. The mass ratio is taken as 1.7, and the damping ratio as 0.016. The hydraulic diameter for all the shapes is kept constant, and the Reynolds number based on the hydraulic diameter is varied in the range of 1.7×104 to 10.3×104 to mimic the flow velocity of the water current in the ocean (0.19 – 1.14 m/s). In this work, water is considered as the flowing fluid, which is supposed to be incompressible and viscous. The flow dynamics of the fluid over a bluff body are described using the unsteady Reynolds Averaged Navier-Stokes equations, and the turbulence is modeled through the SST k–ω turbulence model. Based on the findings, it can be concluded that the shape of the bluff body has a significant impact on both the vibration characteristics, the output power, and the efficiency of energy harvesting. The analysis suggests that circular shapes are ideal for energy harvesting from flow-induced vibrations at low Ur, while diamond shapes are most suitable at high Ur. In this study, the maximum output power of 1.57 W was obtained with a diamond-shaped structure at Ur = 10. Whereas the maximum efficiency of 9.01% was obtained through the circular structure at Ur = 4.
KW - Bluff bodies
KW - Energy Harvesting
KW - Flow-induced vibrations
KW - Sustainable Energy
KW - Vortex shedding
UR - http://www.scopus.com/inward/record.url?scp=85185830760&partnerID=8YFLogxK
U2 - 10.1115/IMECE2023-112805
DO - 10.1115/IMECE2023-112805
M3 - Conference contribution
AN - SCOPUS:85185830760
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Dynamics, Vibration, and Control
PB - The American Society of Mechanical Engineers(ASME)
T2 - ASME 2023 International Mechanical Engineering Congress and Exposition, IMECE 2023
Y2 - 29 October 2023 through 2 November 2023
ER -