Large-eddy simulation of atmospheric boundary layer flow through wind turbines and wind farms

Porté‐Agel, Fernando; Wu, Yu Ting; Lu, Hao; Conzemius, R.J.

doi:10.1016/j.jweia.2011.01.011

Cited by 428 publications

(331 citation statements)

References 48 publications

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“…However, a similar assumption is made when tabulated airfoil data is used for the AD forces, to represent a wind turbine rotor from which the actual blade geometry and corresponding aerodynamics are unknown. This assumption is used by Porté-Agel et al [19] and Churchfield et al [4]. In their work the AD forces of the Siemens SWT-2.3-93 wind turbine are modeled by using a newly designed wind turbine, that mimics the known power production.…”

Section: Force Treatment For Multiple Actuator Disksmentioning

confidence: 99%

Thek-ε-f_Pmodel applied to double wind turbine wakes using different actuator disk force methods

et al. 2014

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The newly developed k‐ε‐fP eddy viscosity model is applied to double wind turbine wake configurations in a neutral atmospheric boundary layer, using a Reynolds‐Averaged Navier–Stokes solver. The wind turbines are represented by actuator disks. A proposed variable actuator disk force method is employed to estimate the power production of the interacting wind turbines, and the results are compared with two existing methods: a method based on tabulated airfoil data and a method based on the axial induction from 1D momentum theory. The proposed method calculates the correct power, while the other two methods overpredict it. The results of the k‐ε‐fP eddy viscosity model are also compared with the original k‐ε eddy viscosity model and large‐eddy simulations. Compared to the large‐eddy simulations‐predicted velocity and power deficits, the k‐ε‐fP is superior to the original k‐ε model. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Force Treatment For Multiple Actuator Disksmentioning

confidence: 99%

Thek-ε-f_Pmodel applied to double wind turbine wakes using different actuator disk force methods

et al. 2014

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“…At a free-stream speed of 10m/s the tip vortices have only just broken down at 7 rotor diameters (7D) as shown in Figure 4. Other simulations used sufficiently large domains but reported data in a longitudinal plane, which does not give much information about wake structure (Jimenez et al 2007, Porté-Agel et al 2011, Zahle & Sørensen 2007. However when using longitudinal data the turbulence intensity can be still be seen to change at least 3% across the rotor at 7 rotor diameters in wind tunnel measurements, indicating some level of increased unsteady loading (Porté-Agel et al 2011).…”

Section: Wake Structure and Propagationmentioning

confidence: 99%

“…This approach is much faster than full modelling of the blades, and suitable for most applications but occasionally insufficient. Recently large-eddy simulations (LES) of the wakes of horizontal-axis wind turbines have been conducted (Bazilevs et al 2011, Jimenez et al 2007, Hsu et al 2013, Porté-Agel et al 2011, Sezer-Uzol & Long 2006. This is a turbulence model that directly resolves large-scale eddies and models smaller ones, eliminating the extra computational cost of simulating very small scale turbulence.…”

Section: Introductionmentioning

confidence: 99%

“…This is a turbulence model that directly resolves large-scale eddies and models smaller ones, eliminating the extra computational cost of simulating very small scale turbulence. There is often cross-over in these approaches, with LES studies using actuator line or disc methods (Jimenez et al 2007, Porté-Agel et al 2011. Using simplified approaches instead of modelling the blades directly may lead to missed details in the wake flow-field and airfoil noise.…”

Section: Introductionmentioning

confidence: 99%

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A discussion of wind turbine interaction and stall contributions to wind farm noise

Laratro

Arjomandi

Kelso

et al. 2014

Journal of Wind Engineering and Industrial Aerodynamics

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Elsevier's Policy: An author may use the preprint for personal use, internal institutional use and for permitted scholarly posting. ... Elsevier's AAM Policy: Authors retain the right to use the accepted author manuscript for personal use, internal institutional use and for permitted scholarly posting provided that these are not for purposes of commercial use or systematic distribution. Elsevier believes that individual authors should be able to distribute their AAMs for their personal voluntary needs and interests, e.g. posting to their websites or their institution's repository, e-mailing to colleagues. However, our policies differ regarding the systematic aggregation or distribution of AAMs to ensure the sustainability of the journals to which AAMs are submitted. Therefore, deposit in, or posting to, subject-oriented or centralized repositories (such as PubMed Central), or institutional repositories with systematic posting mandates is permitted only under specific agreements between Elsevier and the repository, agency or institution, and only consistent with the publisher's policies concerning such repositories. Voluntary posting of AAMs in the arXiv subject repository is permitted. ... Highlights-Rotor-wake interaction plays a role in wind farm noise -More wake data needs to be collected -Dynamic stall noise needs to be characterised AbstractWind farms have recently been reported to produce a noise signature that is described as possessing a "thumping" quality. Measurements of these signatures are limited and their effects are debated but their effect on public opinion and complaints make them a concern for researchers in this field. Proposed reasons for these noise signatures include amplitude modulation, interference patterns and wake-rotor interaction. This paper discusses these effects and concludes that wake-rotor interaction plays a role by causing variations in turbulent-inflow noise and dynamic stall. The current state of research into stall noise and wind turbine wake structure is also reviewed and it is concluded that the available information and collected data on wind turbine wake are insufficient to determine how strong this role is. More information on the velocity and turbulence fields in the wake of horizontal-axis wind turbines as well as a characterisation of the noise produced by an airfoil experiencing dynamic stall is required in order to make a full assessment of rotor-wake contributions to wind farm noise.2

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“…Toparlar et al 2015), wind energy resource assessment (e.g. Porté-Agel et al 2011, Sanderse et al 2011, Mehta et al 2014 and wind flow over complex topography (e.g. Wood 2000, Bitsuamlak et al 2004, 2006.…”

Section: Introductionmentioning

confidence: 99%

CFD simulation of wind flow over natural complex terrain: Case study with validation by field measurements for Ria de Ferrol, Galicia, Spain

Blocken

Hout

Dekker

et al. 2015

Journal of Wind Engineering and Industrial Aerodynamics

133

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Large-eddy simulation of atmospheric boundary layer flow through wind turbines and wind farms

Cited by 428 publications

References 48 publications

Thek-ε-f_Pmodel applied to double wind turbine wakes using different actuator disk force methods

Thek-ε-f_Pmodel applied to double wind turbine wakes using different actuator disk force methods

A discussion of wind turbine interaction and stall contributions to wind farm noise

CFD simulation of wind flow over natural complex terrain: Case study with validation by field measurements for Ria de Ferrol, Galicia, Spain

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Large-eddy simulation of atmospheric boundary layer flow through wind turbines and wind farms

Cited by 428 publications

References 48 publications

Thek-ε-fPmodel applied to double wind turbine wakes using different actuator disk force methods

Thek-ε-fPmodel applied to double wind turbine wakes using different actuator disk force methods

A discussion of wind turbine interaction and stall contributions to wind farm noise

CFD simulation of wind flow over natural complex terrain: Case study with validation by field measurements for Ria de Ferrol, Galicia, Spain

Contact Info

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Thek-ε-f_Pmodel applied to double wind turbine wakes using different actuator disk force methods

Thek-ε-f_Pmodel applied to double wind turbine wakes using different actuator disk force methods