The aerodynamics of the curled wake: a simplified model in view of flow control
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Published:2019-03-05
Issue:1
Volume:4
Page:127-138
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ISSN:2366-7451
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Container-title:Wind Energy Science
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language:en
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Short-container-title:Wind Energ. Sci.
Author:
Martínez-Tossas Luis A.ORCID, Annoni Jennifer, Fleming Paul A.ORCID, Churchfield Matthew J.
Abstract
Abstract. When a wind turbine is yawed, the shape of the wake changes and a curled wake
profile is generated. The curled wake has drawn a lot of interest because of
its aerodynamic complexity and applicability to wind farm controls. The main
mechanism for the creation of the curled wake has been identified in the
literature as a collection of vortices that are shed from the rotor plane
when the turbine is yawed. This work extends that idea by using aerodynamic
concepts to develop a control-oriented model for the curled wake based on
approximations to the Navier–Stokes equations. The model is tested and
compared to time-averaged results from large-eddy simulations using actuator
disk and line models. The model is able to capture the curling mechanism for
a turbine under uniform inflow and in the case of a neutral atmospheric
boundary layer. The model is then incorporated to the FLOw Redirection and
Induction in Steady State (FLORIS)
framework and provides good agreement with power predictions for cases with
two and three turbines in a row.
Funder
Wind Energy Technologies Office
Publisher
Copernicus GmbH
Subject
Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment
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