Why the Coriolis force turns a wind farm wake to the right in the Northern Hemisphere

Paul van der Laan; Niels N. Sørensen

doi:10.1088/1742-6596/753/3/032031

Why the Coriolis force turns a wind farm wake to the right in the Northern Hemisphere

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Abstract

The interaction between the Coriolis force and a wind farm wake is investigated by
Reynolds-Averaged Navier-Stokes simulations, using two different wind farm representations: a high roughness and 5×5 actuator disks. Surprisingly, the calculated wind farm wake deflection is opposite in the two simulations. A momentum balance in the cross flow direction shows that the interaction between the Coriolis force and the 5×5 actuator disks is complex due to turbulent mixing of fresh momentum from above into the wind farm, which is not observed for the interaction between the Coriolis force and a roughness change.

Original language	English
Article number	032031
Book series	Journal of Physics: Conference Series (Online)
Volume	753
Number of pages	7
ISSN	1742-6596
DOIs	https://doi.org/10.1088/1742-6596/753/3/032031
Publication status	Published - 2016
Event	The Science of Making Torque from Wind 2016 - Technische Universität München (TUM), Munich, Germany Duration: 5 Oct 2016 → 7 Oct 2016 Conference number: 6 https://www.events.tum.de/?sub=29

Conference

Conference	The Science of Making Torque from Wind 2016
Number	6
Location	Technische Universität München (TUM)
Country/Territory	Germany
City	Munich
Period	05/10/2016 → 07/10/2016
Internet address	https://www.events.tum.de/?sub=29

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title = "Why the Coriolis force turns a wind farm wake to the right in the Northern Hemisphere",

abstract = "The interaction between the Coriolis force and a wind farm wake is investigated by Reynolds-Averaged Navier-Stokes simulations, using two different wind farm representations: a high roughness and 5{\texttimes}5 actuator disks. Surprisingly, the calculated wind farm wake deflection is opposite in the two simulations. A momentum balance in the cross flow direction shows that the interaction between the Coriolis force and the 5{\texttimes}5 actuator disks is complex due to turbulent mixing of fresh momentum from above into the wind farm, which is not observed for the interaction between the Coriolis force and a roughness change.",

author = "\{van der Laan\}, Paul and S{\o}rensen, \{Niels N.\}",

year = "2016",

doi = "10.1088/1742-6596/753/3/032031",

language = "English",

volume = "753",

journal = "Journal of Physics: Conference Series (Online)",

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publisher = "IOP Publishing",

note = "The Science of Making Torque from Wind 2016, TORQUE 2016 ; Conference date: 05-10-2016 Through 07-10-2016",

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T1 - Why the Coriolis force turns a wind farm wake to the right in the Northern Hemisphere

AU - van der Laan, Paul

AU - Sørensen, Niels N.

N1 - Conference code: 6

PY - 2016

Y1 - 2016

N2 - The interaction between the Coriolis force and a wind farm wake is investigated by Reynolds-Averaged Navier-Stokes simulations, using two different wind farm representations: a high roughness and 5×5 actuator disks. Surprisingly, the calculated wind farm wake deflection is opposite in the two simulations. A momentum balance in the cross flow direction shows that the interaction between the Coriolis force and the 5×5 actuator disks is complex due to turbulent mixing of fresh momentum from above into the wind farm, which is not observed for the interaction between the Coriolis force and a roughness change.

AB - The interaction between the Coriolis force and a wind farm wake is investigated by Reynolds-Averaged Navier-Stokes simulations, using two different wind farm representations: a high roughness and 5×5 actuator disks. Surprisingly, the calculated wind farm wake deflection is opposite in the two simulations. A momentum balance in the cross flow direction shows that the interaction between the Coriolis force and the 5×5 actuator disks is complex due to turbulent mixing of fresh momentum from above into the wind farm, which is not observed for the interaction between the Coriolis force and a roughness change.

U2 - 10.1088/1742-6596/753/3/032031

DO - 10.1088/1742-6596/753/3/032031

M3 - Conference article

SN - 1742-6596

VL - 753

JO - Journal of Physics: Conference Series (Online)

JF - Journal of Physics: Conference Series (Online)

M1 - 032031

T2 - The Science of Making Torque from Wind 2016

Y2 - 5 October 2016 through 7 October 2016

ER -

Why the Coriolis force turns a wind farm wake to the right in the Northern Hemisphere

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Conference

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