Numerical and Experimental Study of Wake Redirection Techniques in a Boundary Layer Wind Tunnel

Wang, J; Foley, Sarah; Nanos, Emmanouil M.; Tao, Youshan; Campagnolo, Filippo; Bottasso, Carlo L.; Zanotti, Alex; Croce, Alessandro

doi:10.1088/1742-6596/854/1/012048

Cited by 37 publications

(33 citation statements)

References 13 publications

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“…The IB formulation of Lai and Peskin (2000), Mittal and Iaccarino (2005), and Jasak and Rigler (2014) is used to model the wind turbine nacelle and tower, whose effects on the flow proved to be quite significant, at least in the nearwake region, and should therefore not be neglected (Wang et al, 2017b). The IB method is employed to avoid the use of surface-conforming meshes to represent the shape of such bodies (Mittal and Iaccarino, 2005).…”

Section: Numerical Simulation Modelmentioning

confidence: 99%

“…Boundary conditions and wall models can be directly imposed on the IB surfaces with this approach, yielding good solution quality for high-Reynolds viscous flows (Bandringa, 2010). Details on the formulation are reported in Wang et al (2017b). ALM-modeled blades and an IB-modeled nacelle and tower introduce local numerical dispersion and diffusion, which affect simulation stability and accuracy (Holzmann, 2016;Moukalled et al, 2016).…”

Section: Numerical Simulation Modelmentioning

confidence: 99%

“…The computational setup for the wind turbine-wake simulation follows Wang et al (2017a). The domain layout is shown in Fig.…”

Section: Successor Simulationmentioning

confidence: 99%

“…In the first case, the flow velocity is obtained from a lidar-scanned low-turbulence (< 2 %) inflow condition (van Dooren et al, 2017). Measurements also accounts for a slight nonuniformity of the flow within the wind tunnel (Wang et al, 2017a). In the second case, as previously explained, the output of the passively generated turbulent precursor simulation was instead used as an inlet for the successor simulation.…”

Section: Successor Simulationmentioning

confidence: 99%

“…This study is preliminary in the sense that only a limited set of conditions for one isolated wind turbine are analyzed. Wake interactions are analyzed in Wang et al (2017bWang et al ( , 2018 and in forthcoming publications. The authors believe in the need to clarify to what degree wake modeling methods are indeed able to represent farm-controlrelevant conditions, this work being a first limited-scope step in this direction.…”

Section: Introductionmentioning

confidence: 99%

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Wake behavior and control: comparison of LES simulations and wind tunnel measurements

Wang

Campagnolo

et al. 2019

Wind Energ. Sci.

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Abstract. This paper applies a large-eddy actuator line approach to the simulation of wind turbine wakes. In addition to normal operating conditions, a specific focus of the paper is on wake manipulation, which is performed here by derating, yaw misalignment and cyclic pitching of the blades. With the purpose of clarifying the ability of LES methods to represent conditions that are relevant for wind farm control, numerical simulations are compared to experimental observations obtained in a boundary layer wind tunnel with scaled wind turbine models. Results indicate a good overall matching of simulations with experiments. Low-turbulence test cases appear to be more challenging than moderate- and high-turbulence ones due to the need for denser grids to limit numerical diffusion and accurately resolve tip-shed vortices in the near-wake region.

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