Performance Analysis and Optimization of Dual‐Row Vertical Axis Wind Turbines With Innovative Hybrid Blades

Performance Analysis and Optimization of Dual‐Row Vertical Axis Wind Turbines With Innovative Hybrid Blades

ABSTRACT Vertical axis wind turbines have shown potential for urban energy harvesting but suffer from weak start‐up performance. This study introduces a novel dual‐row turbine that combines J‐shaped and conventional blades to harness both drag and lift forces, achieving enhanced performance over a w...

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Bibliographic Details
Main Authors: H. Mirzaeian, B. Ghobadian, M. Mirhosseini
Format: Article
Language:English
Published: Wiley 2025-06-01
Series:Energy Science & Engineering
Subjects:
computational fluid dynamics (CFD)
darrieus wind turbine
hybrid Rotor
J‐Shaped Blades
taguchi method
Online Access:https://doi.org/10.1002/ese3.70095
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Summary:ABSTRACT Vertical axis wind turbines have shown potential for urban energy harvesting but suffer from weak start‐up performance. This study introduces a novel dual‐row turbine that combines J‐shaped and conventional blades to harness both drag and lift forces, achieving enhanced performance over a wide operational range. Through computational fluid dynamics simulations and Taguchi optimization, the turbine demonstrated a higher maximum power coefficient of 0.52 and a superior power performance at low tip speed ratios. This innovative design significantly surpasses conventional hybrid Savonius‐Darrieus, as well as single‐ and dual‐row Darrieus designs. Among the five main parameters analyzed, the tip speed ratio (λ) had the strongest influence on the performance, followed by the type of airfoils (α), radial ratio (δ), solidity ratio (σratio), and angular distance (ϕ), respectively. The optimization results identified the optimal operational point of the turbine at λ = 2, ϕ = 0, δ = 1.4, σratio = 1.5, and α = 21 (utilizing J‐shaped blades in the inner row and conventional blades in the outer row). These findings highlight the potential of the hybrid dual‐row Darrieus design to enhance vertical axis wind turbine efficiency and pave the way for its application in urban wind energy.
ISSN:2050-0505

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