Improving vertical-axis turbine efficiency with chordwise actively deforming blades

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Efficiency improved by 3.55% at optimal tip-speed ratios with actively deforming airfoils, enhancing turbine performance.
The study reports notable relative improvements at low tip-speed ratios, with marginal gains at higher speeds.
Analysis used unsteady Reynolds-averaged Navier–Stokes simulations on H-type Darrieus vertical-axis turbine.
Findings highlight the potential of employing active airfoil deformations to optimize vertical-axis turbine efficiency.

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Simulations show 3.55% efficiency improvement in turbine performance with active airfoil deformations at optimal tip-speed ratios.

Mathieu Olivier (2025) studied this question.

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