The 3D effects of a vertical-axis wind turbine: Rotor and wake induction

D. De Tavernier; C. Ferreira; U. Paulsen; H. Madsen

doi:10.1088/1742-6596/1618/5/052040

The 3D effects of a vertical-axis wind turbine: Rotor and wake induction

D. De Tavernier, C. Ferreira, U. Paulsen, H. Madsen

Wind Energy

Research output: Contribution to journal › Conference article › Scientific › peer-review

5 Citations (Scopus)

56 Downloads (Pure)

Abstract

This paper deals with the 3D effects of a vertical-axis wind turbine caused by the tip vortices. In this study, the VAWT rotor is simplified by the infinitely bladed actuator cylinder concept. The loads are prescribed to be uniform and normal to the surface and are distributed between the upwind and downwind half. Depending on the load configuration, the tip vortices are shed at different locations. This causes the wake induction field and the induction at the rotor to be significantly different. The 3D effects cause a power loss that may go up to 15% depending on the load configuration and aspect ratio. Starting from an aspect ratio of 5, the rotor induction and power is approaching 2D results.

Original language	English
Article number	052040
Number of pages	11
Journal	Journal of Physics: Conference Series
Volume	1618
Issue number	5
DOIs	https://doi.org/10.1088/1742-6596/1618/5/052040
Publication status	Published - 22 Sept 2020
Event	Science of Making Torque from Wind 2020, TORQUE 2020 - Online, Virtual, Online, Netherlands Duration: 28 Sept 2020 → 2 Oct 2020

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10.1088/1742-6596/1618/5/052040

Tavernier_2020_J._Phys. _Conf._Ser._1618_052040Final published version, 2 MBLicence: CC BY

Cite this

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AB - This paper deals with the 3D effects of a vertical-axis wind turbine caused by the tip vortices. In this study, the VAWT rotor is simplified by the infinitely bladed actuator cylinder concept. The loads are prescribed to be uniform and normal to the surface and are distributed between the upwind and downwind half. Depending on the load configuration, the tip vortices are shed at different locations. This causes the wake induction field and the induction at the rotor to be significantly different. The 3D effects cause a power loss that may go up to 15% depending on the load configuration and aspect ratio. Starting from an aspect ratio of 5, the rotor induction and power is approaching 2D results.

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The 3D effects of a vertical-axis wind turbine: Rotor and wake induction

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