Numerical Analysis and Parameter Optimization of J-Shaped Blade on Offshore Vertical Axis Wind Turbine

Lin Pan, Ze Zhu, Haodong Xiao and Leichong Wang
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Lin Pan: School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China
Ze Zhu: School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China
Haodong Xiao: School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China
Leichong Wang: Zhongshan Institute of Advanced Engineering Technology of WUT, Zhongshan 528437, China

Energies, 2021, vol. 14, issue 19, 1-29

Abstract: In this study, the performance of offshore wind turbines at low tip speed ratio (TSR) is studied using computational fluid dynamics (CFD), and the performance of offshore wind turbines at low tip speed ratio (TSR) is improved by revising the blade structure. First, the parameters of vertical axis offshore wind turbine are designed based on the compactness iteration, a CFD simulation model is established, and the turbulence model is selected through simulation analysis to verify the independence of grid and time step. Compared with previous experimental results, it is shown that the two-dimensional simulation only considers the plane turbulence effect, and the simulation turbulence effect performs more obviously at a high tip ratio, while the three-dimensional simulation turbulence effect has well-fitting performance at high tip ratio. Second, a J-shaped blade with optimized lower surface is proposed. The study showed that the optimized J-shaped blade significantly improved its upwind torque and wind energy capture rate. Finally, the performance of the optimized J-blade offshore wind turbine is analyzed.

Keywords: computational fluid dynamics (CFD); vertical axis offshore wind turbine; coefficient of power (CP); J-shaped blade; starting torque (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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