Preprints
https://doi.org/10.5194/wes-2021-99
https://doi.org/10.5194/wes-2021-99

  14 Sep 2021

14 Sep 2021

Review status: this preprint is currently under review for the journal WES.

A multi-purpose lifting-line flow solver for arbitrary wind energy concepts

Emmanuel Branlard1, Ian Brownstein2, Benjamin Strom2, Jason Jonkman1, Scott Dana1, and Ian Baring-Gould1 Emmanuel Branlard et al.
  • 1National Renewable Energy Laboratory, Golden, CO 80401, USA
  • 2XFlow Energy, Seattle, WA, USA

Abstract. In this work, we extend the AeroDyn module of OpenFAST to be able to support arbitrary collections of wings, rotors and towers. The new standalone AeroDyn driver supports arbitrary motions of the lifting-surfaces and complex turbulent inflows. We describe the features and updates necessary for the implementation of the new AeroDyn driver. We present different case studies of the driver to illustrate its application to concepts such as: multi-rotors, kites, or vertical axis wind turbines. We perform verification and validation of some of the new features using the following test cases: an elliptical wing, a horizontal axis wind turbine, and a 2D and 3D vertical axis wind turbines. The wind turbine simulations are compared to field measurements. We use this opportunity to point out some limitations of current models and highlight areas which we think should be the focus of future research in wind turbine aerodynamics.

Emmanuel Branlard et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on wes-2021-99', Joseph Saverin, 17 Oct 2021
  • RC2: 'Comment on wes-2021-99', Anonymous Referee #2, 22 Oct 2021
  • AC1: 'Reply to reviewer comments', Emmanuel Branlard, 23 Nov 2021

Emmanuel Branlard et al.

Emmanuel Branlard et al.

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Short summary
In this work, we present an aerodynamic tool that can model an arbitrary collections of wings, blades, rotors and towers. With these functionalities, the tool can be used to study and design advanced wind energy concepts, such as: horizontal axis wind turbines, vertical axis wind turbines, kites, or multi-rotors. This article describes the key features of the tool and present multiple applications. Field measurements of horizontal and vertical axis wind turbines are used for comparison.