Windbreak effects within infinite wind farms

Nicolas Tobin, Leonardo P. Chamorro

Research output: Contribution to journalArticle

Abstract

Building upon a recent study that showed windbreaks to be effective in increasing the power output of a wind turbine, the potential of windbreaks in a large wind farm is explored using simplified formulations. A top-down boundary layer approach is combined with methods of estimating both the roughness effects of windbreaks and the induced inviscid speed-up for nearby turbines to investigate power production impact for several layouts of infinite wind farms. Results suggest that the negative impact of windbreak wakes for an infinite wind farm will outweigh the local inviscid speed-up for realistic inter-Turbine spacings, with the break-even point expected at a spacing of 25 rotor diameters. However, the possibility that windbreaks may be applicable in finite and other wind farm configurations remains open. Inspection of the windbreak porosity reveals an impact on the magnitude of power perturbation, but not whether the change is positive or negative. Predictions from the boundary-layer approach are validated with power measurements from large-eddy simulations.

Original languageEnglish (US)
Article number1140
JournalEnergies
Volume10
Issue number8
DOIs
StatePublished - Aug 2017

Fingerprint

Farms
Turbine
Spacing
Boundary Layer
Boundary layers
Speedup
Turbines
Wind Turbine
Large Eddy Simulation
Large eddy simulation
Porosity
Roughness
Wind turbines
Rotor
Inspection
Layout
Rotors
Surface roughness
Perturbation
Configuration

Keywords

  • Atmospheric boundary layer
  • Wind energy
  • Windbreak

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering

Cite this

Windbreak effects within infinite wind farms. / Tobin, Nicolas; Chamorro, Leonardo P.

In: Energies, Vol. 10, No. 8, 1140, 08.2017.

Research output: Contribution to journalArticle

@article{9b35e7a465ae483b83d41ebf84626764,
title = "Windbreak effects within infinite wind farms",
abstract = "Building upon a recent study that showed windbreaks to be effective in increasing the power output of a wind turbine, the potential of windbreaks in a large wind farm is explored using simplified formulations. A top-down boundary layer approach is combined with methods of estimating both the roughness effects of windbreaks and the induced inviscid speed-up for nearby turbines to investigate power production impact for several layouts of infinite wind farms. Results suggest that the negative impact of windbreak wakes for an infinite wind farm will outweigh the local inviscid speed-up for realistic inter-Turbine spacings, with the break-even point expected at a spacing of 25 rotor diameters. However, the possibility that windbreaks may be applicable in finite and other wind farm configurations remains open. Inspection of the windbreak porosity reveals an impact on the magnitude of power perturbation, but not whether the change is positive or negative. Predictions from the boundary-layer approach are validated with power measurements from large-eddy simulations.",
keywords = "Atmospheric boundary layer, Wind energy, Windbreak",
author = "Nicolas Tobin and Chamorro, {Leonardo P.}",
year = "2017",
month = "8",
doi = "10.3390/en10081140",
language = "English (US)",
volume = "10",
journal = "Energies",
issn = "1996-1073",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "8",

}

TY - JOUR

T1 - Windbreak effects within infinite wind farms

AU - Tobin, Nicolas

AU - Chamorro, Leonardo P.

PY - 2017/8

Y1 - 2017/8

N2 - Building upon a recent study that showed windbreaks to be effective in increasing the power output of a wind turbine, the potential of windbreaks in a large wind farm is explored using simplified formulations. A top-down boundary layer approach is combined with methods of estimating both the roughness effects of windbreaks and the induced inviscid speed-up for nearby turbines to investigate power production impact for several layouts of infinite wind farms. Results suggest that the negative impact of windbreak wakes for an infinite wind farm will outweigh the local inviscid speed-up for realistic inter-Turbine spacings, with the break-even point expected at a spacing of 25 rotor diameters. However, the possibility that windbreaks may be applicable in finite and other wind farm configurations remains open. Inspection of the windbreak porosity reveals an impact on the magnitude of power perturbation, but not whether the change is positive or negative. Predictions from the boundary-layer approach are validated with power measurements from large-eddy simulations.

AB - Building upon a recent study that showed windbreaks to be effective in increasing the power output of a wind turbine, the potential of windbreaks in a large wind farm is explored using simplified formulations. A top-down boundary layer approach is combined with methods of estimating both the roughness effects of windbreaks and the induced inviscid speed-up for nearby turbines to investigate power production impact for several layouts of infinite wind farms. Results suggest that the negative impact of windbreak wakes for an infinite wind farm will outweigh the local inviscid speed-up for realistic inter-Turbine spacings, with the break-even point expected at a spacing of 25 rotor diameters. However, the possibility that windbreaks may be applicable in finite and other wind farm configurations remains open. Inspection of the windbreak porosity reveals an impact on the magnitude of power perturbation, but not whether the change is positive or negative. Predictions from the boundary-layer approach are validated with power measurements from large-eddy simulations.

KW - Atmospheric boundary layer

KW - Wind energy

KW - Windbreak

UR - http://www.scopus.com/inward/record.url?scp=85044472660&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85044472660&partnerID=8YFLogxK

U2 - 10.3390/en10081140

DO - 10.3390/en10081140

M3 - Article

AN - SCOPUS:85044472660

VL - 10

JO - Energies

JF - Energies

SN - 1996-1073

IS - 8

M1 - 1140

ER -