10 Oct 2022
10 Oct 2022
Status: this preprint is currently under review for the journal WES.

Aeroelastic Validation of the Offshore Wind Energy Simulator for Vertical-Axis Wind Turbines

Kevin Ray Moore and Brandon Lee Ennis Kevin Ray Moore and Brandon Lee Ennis
  • Sandia National Laboratories, PO Box 5800 MS 0717 Albuquerque, NM 87185

Abstract. Vertical-axis wind turbines (VAWTs) offer some unique advantages over traditional designs, particularly for floating offshore and certain distributed wind applications. However, the modeling capabilities that exist for VAWT designs greatly lags those for the traditional horizontal-axis wind turbines (HAWTs). Differences between vertical and horizontal turbines necessitates several key additions in modeling, including the aerodynamic model, as well as solving a fundamentally different structural mesh. The Offshore Wind ENergy Simulator (OWENS) is specifically formulated to fulfill these requirements. This paper presents validation cases of this tool for modal, centrifugal, gravitational, startup, normal operation, and shutdown analyses. The aeroelastic validation is performed with increasing complexity from analytical test cases to an experimental VAWT. Validation data are taken from the Sandia National Laboratories 34 meter research turbine. The results of the validation cases are presented and examined.

Kevin Ray Moore and Brandon Lee Ennis

Status: open (extended)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on wes-2022-91', Anonymous Referee #1, 10 Nov 2022 reply
    • AC1: 'Reply on RC1', Kevin Moore, 11 Nov 2022 reply

Kevin Ray Moore and Brandon Lee Ennis

Kevin Ray Moore and Brandon Lee Ennis


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Short summary
This verification and validation effort summarizes the aeroelastic prediction capability of the Offshore Wind ENergy Simulator (OWENS). Cases ranging from simple analytical beams to an experimental vertical-axis turbine are compared and analyzed for modal, steady, and two-way aeroelastically-coupled dynamic operation with turbulent inflow. OWENS has demonstrated accuracy in both mean and varying loads for accurate design and certification of vertical-axis wind turbines.