Can the power density of a VAWT farm be increased by using turbines as vortex generators to control the atmospheric boundary layer?
(2025) Wind Energy Science Conference, WESC 2025 — Location: Nantes (24.June.2025)
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- Vertical-axis wind turbines (VAWTs) offer a promising solution, particularly for offshore wind farm applications. In farm configurations, wake losses significantly impact the overall efficiency of the farm. To address this, one may consider implementing a wake steering strategy. The latter involves intentionally operating selected turbines in off-design conditions to deflect their wake away from downstream rotors, thereby improving the overall performance of the wind farm. Building on this deflection capability, while considering the proximity to the ground, one might ask: could VAWTs be utilized as large-scale vortex generators to create farm-scale vortices and enhance power density? In the present study, Large-Eddy Simulations (LES) of VAWT farms in a neutral atmospheric boundary layer (ABL) are performed in order to investigate the potential of wake steering to increase the power density of the farm.
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Citations
Dandoy, J., Crismer, J.-B., Moens, M., Duponcheel, M., Chatelain, P., & et al. (2025). Can the power density of a VAWT farm be increased by using turbines as vortex generators to control the atmospheric boundary layer? Wind Energy Science Conference, WESC 2025, Nantes.