Contribution of large scale coherence to wind turbine power: A large eddy simulation study in periodic wind farms

Tanmoy Chatterjee, Yulia Peet

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Length scales of eddies involved in the power generation of infinite wind farms are studied by analyzing the spectra of the turbulent flux of mean kinetic energy (MKE) from large eddy simulations (LES). Large-scale structures with an order of magnitude bigger than the turbine rotor diameter (D) are shown to have substantial contribution to wind power. Varying dynamics in the intermediate scales (D-10D) are also observed from a parametric study involving interturbine distances and hub height of the turbines. Further insight about the eddies responsible for the power generation have been provided from the scaling analysis of two-dimensional premultiplied spectra of MKE flux. The LES code is developed in a high Reynolds number near-wall modeling framework, using an open-source spectral element code Nek5000, and the wind turbines have been modelled using a state-of-the-art actuator line model. The LES of infinite wind farms have been validated against the statistical results from the previous literature. The study is expected to improve our understanding of the complex multiscale dynamics in the domain of large wind farms and identify the length scales that contribute to the power. This information can be useful for design of wind farm layout and turbine placement that take advantage of the large-scale structures contributing to wind turbine power.

Original languageEnglish (US)
Article number034601
JournalPhysical Review Fluids
Volume3
Issue number3
DOIs
StatePublished - Mar 1 2018

Fingerprint

Wind Turbine
Large Eddy Simulation
Large eddy simulation
Wind turbines
Farms
Turbine
Simulation Study
Turbines
Large-scale Structure
Kinetic energy
Length Scale
Power generation
Fluxes
Spectral Elements
Wind Power
Open Source
Rotor
Wind power
Placement
Reynolds number

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Computational Mechanics
  • Modeling and Simulation

Cite this

Contribution of large scale coherence to wind turbine power : A large eddy simulation study in periodic wind farms. / Chatterjee, Tanmoy; Peet, Yulia.

In: Physical Review Fluids, Vol. 3, No. 3, 034601, 01.03.2018.

Research output: Contribution to journalArticle

@article{34ea9ce1bb78463b90b4f44ba9df3dea,
title = "Contribution of large scale coherence to wind turbine power: A large eddy simulation study in periodic wind farms",
abstract = "Length scales of eddies involved in the power generation of infinite wind farms are studied by analyzing the spectra of the turbulent flux of mean kinetic energy (MKE) from large eddy simulations (LES). Large-scale structures with an order of magnitude bigger than the turbine rotor diameter (D) are shown to have substantial contribution to wind power. Varying dynamics in the intermediate scales (D-10D) are also observed from a parametric study involving interturbine distances and hub height of the turbines. Further insight about the eddies responsible for the power generation have been provided from the scaling analysis of two-dimensional premultiplied spectra of MKE flux. The LES code is developed in a high Reynolds number near-wall modeling framework, using an open-source spectral element code Nek5000, and the wind turbines have been modelled using a state-of-the-art actuator line model. The LES of infinite wind farms have been validated against the statistical results from the previous literature. The study is expected to improve our understanding of the complex multiscale dynamics in the domain of large wind farms and identify the length scales that contribute to the power. This information can be useful for design of wind farm layout and turbine placement that take advantage of the large-scale structures contributing to wind turbine power.",
author = "Tanmoy Chatterjee and Yulia Peet",
year = "2018",
month = "3",
day = "1",
doi = "10.1103/PhysRevFluids.3.034601",
language = "English (US)",
volume = "3",
journal = "Physical Review Fluids",
issn = "2469-990X",
publisher = "American Physical Society",
number = "3",

}

TY - JOUR

T1 - Contribution of large scale coherence to wind turbine power

T2 - A large eddy simulation study in periodic wind farms

AU - Chatterjee, Tanmoy

AU - Peet, Yulia

PY - 2018/3/1

Y1 - 2018/3/1

N2 - Length scales of eddies involved in the power generation of infinite wind farms are studied by analyzing the spectra of the turbulent flux of mean kinetic energy (MKE) from large eddy simulations (LES). Large-scale structures with an order of magnitude bigger than the turbine rotor diameter (D) are shown to have substantial contribution to wind power. Varying dynamics in the intermediate scales (D-10D) are also observed from a parametric study involving interturbine distances and hub height of the turbines. Further insight about the eddies responsible for the power generation have been provided from the scaling analysis of two-dimensional premultiplied spectra of MKE flux. The LES code is developed in a high Reynolds number near-wall modeling framework, using an open-source spectral element code Nek5000, and the wind turbines have been modelled using a state-of-the-art actuator line model. The LES of infinite wind farms have been validated against the statistical results from the previous literature. The study is expected to improve our understanding of the complex multiscale dynamics in the domain of large wind farms and identify the length scales that contribute to the power. This information can be useful for design of wind farm layout and turbine placement that take advantage of the large-scale structures contributing to wind turbine power.

AB - Length scales of eddies involved in the power generation of infinite wind farms are studied by analyzing the spectra of the turbulent flux of mean kinetic energy (MKE) from large eddy simulations (LES). Large-scale structures with an order of magnitude bigger than the turbine rotor diameter (D) are shown to have substantial contribution to wind power. Varying dynamics in the intermediate scales (D-10D) are also observed from a parametric study involving interturbine distances and hub height of the turbines. Further insight about the eddies responsible for the power generation have been provided from the scaling analysis of two-dimensional premultiplied spectra of MKE flux. The LES code is developed in a high Reynolds number near-wall modeling framework, using an open-source spectral element code Nek5000, and the wind turbines have been modelled using a state-of-the-art actuator line model. The LES of infinite wind farms have been validated against the statistical results from the previous literature. The study is expected to improve our understanding of the complex multiscale dynamics in the domain of large wind farms and identify the length scales that contribute to the power. This information can be useful for design of wind farm layout and turbine placement that take advantage of the large-scale structures contributing to wind turbine power.

UR - http://www.scopus.com/inward/record.url?scp=85044949604&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85044949604&partnerID=8YFLogxK

U2 - 10.1103/PhysRevFluids.3.034601

DO - 10.1103/PhysRevFluids.3.034601

M3 - Article

VL - 3

JO - Physical Review Fluids

JF - Physical Review Fluids

SN - 2469-990X

IS - 3

M1 - 034601

ER -