Experimental and Numerical study of Wake to Wake Interaction in Wind Farms

Ewan Machefaux; Niels Troldborg; Gunner Chr. Larsen; Jakob Mann; Helge Aagaard Madsen

Experimental and Numerical study of Wake to Wake Interaction in Wind Farms

Ewan Machefaux, Niels Troldborg, Gunner Chr. Larsen, Jakob Mann, Helge Aagaard Madsen

Department of Wind Energy

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

In this paper, wake interaction between two wind turbines
is analyzed using experimental and numerical
approaches. Full-scale wake measurements are
conducted at Tjæreborg wind farm and are obtained
using a continuous wave lidar mounted on the back
of the nacelle of a 2MW NM80 turbine. Numerical
analyses are conducted for two double wake cases
characterized by different turbine spacing, using the
in-house EllipSys3D flow solver. Large Eddy Simulation
and Actuator Line technique are used for modeling
the rotor and the flow field. 10-minute average
streamwise velocity and turbulence level are compared,
and good agreement is seen between the
measurements and the computations despite of a
lateral offset and other discrepancies due to uncertainties
on the measured inflow conditions and lidar
mounting alignment.

Original language	English
Title of host publication	Proceedings of EWEA 2012 - European Wind Energy Conference & Exhibition
Number of pages	10
Publisher	European Wind Energy Association (EWEA)
Publication date	2012
Publication status	Published - 2012
Event	EWEA 2012 - European Wind Energy Conference & Exhibition - Copenhagen, Denmark Duration: 16 Apr 2012 → 19 Apr 2012 http://events.ewea.org/annual2012/

Conference

Conference	EWEA 2012 - European Wind Energy Conference & Exhibition
Country	Denmark
City	Copenhagen
Period	16/04/2012 → 19/04/2012
Internet address	http://events.ewea.org/annual2012/

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PresentationFinal published version, 1.45 MB

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Cite this

@inproceedings{f10f9a8ab95b441facb5fe0c38e22215,

title = "Experimental and Numerical study of Wake to Wake Interaction in Wind Farms",

abstract = "In this paper, wake interaction between two wind turbines is analyzed using experimental and numerical approaches. Full-scale wake measurements are conducted at Tj{\ae}reborg wind farm and are obtained using a continuous wave lidar mounted on the back of the nacelle of a 2MW NM80 turbine. Numerical analyses are conducted for two double wake cases characterized by different turbine spacing, using the in-house EllipSys3D flow solver. Large Eddy Simulation and Actuator Line technique are used for modeling the rotor and the flow field. 10-minute average streamwise velocity and turbulence level are compared, and good agreement is seen between the measurements and the computations despite of a lateral offset and other discrepancies due to uncertainties on the measured inflow conditions and lidar mounting alignment.",

author = "Ewan Machefaux and Niels Troldborg and Larsen, {Gunner Chr.} and Jakob Mann and {Aagaard Madsen}, Helge",

year = "2012",

language = "English",

booktitle = "Proceedings of EWEA 2012 - European Wind Energy Conference & Exhibition",

publisher = "European Wind Energy Association (EWEA)",

note = "EWEA 2012 - European Wind Energy Conference & Exhibition, EWEC 2012 ; Conference date: 16-04-2012 Through 19-04-2012",

url = "http://events.ewea.org/annual2012/",

}

Experimental and Numerical study of Wake to Wake Interaction in Wind Farms. / Machefaux, Ewan; Troldborg, Niels ; Larsen, Gunner Chr.; Mann, Jakob ; Aagaard Madsen , Helge.

Proceedings of EWEA 2012 - European Wind Energy Conference & Exhibition. European Wind Energy Association (EWEA), 2012.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Experimental and Numerical study of Wake to Wake Interaction in Wind Farms

AU - Machefaux, Ewan

AU - Troldborg, Niels

AU - Larsen, Gunner Chr.

AU - Mann, Jakob

AU - Aagaard Madsen , Helge

PY - 2012

Y1 - 2012

N2 - In this paper, wake interaction between two wind turbines is analyzed using experimental and numerical approaches. Full-scale wake measurements are conducted at Tjæreborg wind farm and are obtained using a continuous wave lidar mounted on the back of the nacelle of a 2MW NM80 turbine. Numerical analyses are conducted for two double wake cases characterized by different turbine spacing, using the in-house EllipSys3D flow solver. Large Eddy Simulation and Actuator Line technique are used for modeling the rotor and the flow field. 10-minute average streamwise velocity and turbulence level are compared, and good agreement is seen between the measurements and the computations despite of a lateral offset and other discrepancies due to uncertainties on the measured inflow conditions and lidar mounting alignment.

AB - In this paper, wake interaction between two wind turbines is analyzed using experimental and numerical approaches. Full-scale wake measurements are conducted at Tjæreborg wind farm and are obtained using a continuous wave lidar mounted on the back of the nacelle of a 2MW NM80 turbine. Numerical analyses are conducted for two double wake cases characterized by different turbine spacing, using the in-house EllipSys3D flow solver. Large Eddy Simulation and Actuator Line technique are used for modeling the rotor and the flow field. 10-minute average streamwise velocity and turbulence level are compared, and good agreement is seen between the measurements and the computations despite of a lateral offset and other discrepancies due to uncertainties on the measured inflow conditions and lidar mounting alignment.

M3 - Article in proceedings

BT - Proceedings of EWEA 2012 - European Wind Energy Conference & Exhibition

PB - European Wind Energy Association (EWEA)

T2 - EWEA 2012 - European Wind Energy Conference & Exhibition

Y2 - 16 April 2012 through 19 April 2012

ER -