Numerical evaluation of the influence of pitch angle on aerodynamic performance and flow patterns in a Darrieus vertical axis wind turbine equipped with J-shaped blades

2026-07-24

Arman Asfa

Majid Bazargan

DOI：10.1016/j.ecmx.2026.102172

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• Optimal pitch angle of −3° improves J-type bladed turbine performance. • Pitch angle delays dynamic stall at low TSRs, enhancing torque generation. • High TSRs benefit from increased torque at downwind area via higher AOA. • Closed J-type blades with β = −3° exceed conventional blades by 30.5% in performance. • Combined pitch angle and closed tips mitigate high TSR limitations of J-type blades.

Keywords:

Darrieus Vertical Axis Wind Turbine (VAWT)

Capped J-shaped blades

Pitch angle refinement

Aerodynamic performance

Power coefficient

Dynamic stall

Numerical evaluation of the influence of pitch angle on aerodynamic performance and flow patterns in a Darrieus vertical axis wind turbine equipped with J-shaped blades

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