On the self-similarity of wind turbine wakes in a complex terrain using large eddy simulation

Arslan Salim Dar, Jacob Berg*, Niels Troldborg, Edward G. Patton

*Corresponding author for this work

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Abstract

We perform large eddy simulation of flow in a complex terrain under neutral atmospheric stratification. We study the self-similar behavior of a turbine wake as a function of varying terrain complexity and perform comparisons with a flat terrain. By plotting normalized velocity deficit profiles in different complex terrain cases, we verify that self-similarity is preserved as we move downstream from the turbine. We find that this preservation is valid for a shorter distance downstream compared to what is observed in a flat terrain. A larger spread of the profiles toward the tails due to varying levels of shear is also observed.
Original languageEnglish
JournalWind Energy Science
Volume4
Pages (from-to)633-644
Number of pages12
ISSN2366-7443
DOIs
Publication statusPublished - 2019

Cite this

Dar, Arslan Salim ; Berg, Jacob ; Troldborg, Niels ; Patton, Edward G. / On the self-similarity of wind turbine wakes in a complex terrain using large eddy simulation. In: Wind Energy Science. 2019 ; Vol. 4. pp. 633-644.
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abstract = "We perform large eddy simulation of flow in a complex terrain under neutral atmospheric stratification. We study the self-similar behavior of a turbine wake as a function of varying terrain complexity and perform comparisons with a flat terrain. By plotting normalized velocity deficit profiles in different complex terrain cases, we verify that self-similarity is preserved as we move downstream from the turbine. We find that this preservation is valid for a shorter distance downstream compared to what is observed in a flat terrain. A larger spread of the profiles toward the tails due to varying levels of shear is also observed.",
author = "Dar, {Arslan Salim} and Jacob Berg and Niels Troldborg and Patton, {Edward G.}",
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On the self-similarity of wind turbine wakes in a complex terrain using large eddy simulation. / Dar, Arslan Salim ; Berg, Jacob; Troldborg, Niels; Patton, Edward G.

In: Wind Energy Science, Vol. 4, 2019, p. 633-644.

Research output: Contribution to journalJournal articleResearchpeer-review

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T1 - On the self-similarity of wind turbine wakes in a complex terrain using large eddy simulation

AU - Dar, Arslan Salim

AU - Berg, Jacob

AU - Troldborg, Niels

AU - Patton, Edward G.

PY - 2019

Y1 - 2019

N2 - We perform large eddy simulation of flow in a complex terrain under neutral atmospheric stratification. We study the self-similar behavior of a turbine wake as a function of varying terrain complexity and perform comparisons with a flat terrain. By plotting normalized velocity deficit profiles in different complex terrain cases, we verify that self-similarity is preserved as we move downstream from the turbine. We find that this preservation is valid for a shorter distance downstream compared to what is observed in a flat terrain. A larger spread of the profiles toward the tails due to varying levels of shear is also observed.

AB - We perform large eddy simulation of flow in a complex terrain under neutral atmospheric stratification. We study the self-similar behavior of a turbine wake as a function of varying terrain complexity and perform comparisons with a flat terrain. By plotting normalized velocity deficit profiles in different complex terrain cases, we verify that self-similarity is preserved as we move downstream from the turbine. We find that this preservation is valid for a shorter distance downstream compared to what is observed in a flat terrain. A larger spread of the profiles toward the tails due to varying levels of shear is also observed.

U2 - 10.5194/wes-4-633-2019

DO - 10.5194/wes-4-633-2019

M3 - Journal article

VL - 4

SP - 633

EP - 644

JO - Wind Energy Science

JF - Wind Energy Science

SN - 2366-7443

ER -