2008
DOI: 10.1002/we.269
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A study on rotational effects and different stall delay models using a prescribed wake vortex scheme and NREL phase VI experiment data

Abstract: Understanding of the stall delay phenomenon on wind turbines remains, to this day, incomplete. A correct modelling of this phenomenon, which results from three-dimensional rotational effects, is essential in order to make reliable wind turbine simulations on the basis of two-dimensional airfoil data, such as with the widely used blade element momentum method. The present study addresses this issue by testing six existing models intended to correct for stall delay effects, namely those developed by Snel et al.,… Show more

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Cited by 101 publications
(83 citation statements)
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“…Such effects are called "rotation effects" [28] and appear to be due to centrifugal and Coriolis forces [29,30]. Various corrections have been proposed for the aerodynamic coefficients [30], but none provides good correlation for the predictions with the experiments. In the present model, the following correction is proposed, limited to the normal force:…”
Section: D Effectsmentioning
confidence: 99%
“…Such effects are called "rotation effects" [28] and appear to be due to centrifugal and Coriolis forces [29,30]. Various corrections have been proposed for the aerodynamic coefficients [30], but none provides good correlation for the predictions with the experiments. In the present model, the following correction is proposed, limited to the normal force:…”
Section: D Effectsmentioning
confidence: 99%
“…Chaviaropoulos and Hansen, 2000;Bak et al, 2006;Raj, 2000;Corrigan and Schillings, 1994). However, Breton et al (2008) and Guntur et al (2011) proved that their accuracy is still a critical issue. Currently, a major impediment in the development of accurate correction models is the incomplete understanding of the physical mechanisms.…”
Section: Spanwise Flows and Himmelskamp Effectmentioning
confidence: 99%
“…Here, the criterion is applied to the NREL turbine [3,4,5] and to a large turbine like the Siemens SWT-2.3-93 at its cut-in and rated wind speeds. Figure 7.…”
Section: Test Of the Criterionmentioning
confidence: 99%
“…While a number of models have been proposed to incorporate 3D effects included rotational augmentation, e.g. [4], there is no clear basis for formulating a succinct necessary or sufficient criterion for occurrence of rotational augmentation.…”
Section: Introductionmentioning
confidence: 99%