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Blade Load Unsteadiness and Turbulence Statistics in an Actuator-Line Computed Turbine–Turbine Interaction Problem

Journal Article · · Journal of Solar Energy Engineering
DOI:https://doi.org/10.1115/1.4032545· OSTI ID:1348918
 [1];  [2]
  1. Pennsylvania State Univ., University Park, PA (United States). Dept. of Aerospace Engineering; Department of Aerospace Engineering, Pennsylvania State University
  2. Pennsylvania State Univ., University Park, PA (United States). Dept. of Aerospace Engineering
+ Show Author Affiliations
The objective of this study is to investigate how different volumetric projection techniques used in actuator-line modeling affect the unsteady blade loads and wake turbulence statistics. The two techniques for the body-force projection radius are based on either (i) the grid spacing or (ii) the combination of grid spacing and an equivalent elliptic blade planform. An array of two National Renewable Energy Laboratory 5-MW turbines separated by seven rotor diameters is simulated for 2000s (about rotor 300 revolutions) within a large-eddy simulation (LES) solver of the neutral and moderately convective atmospheric boundary layer (ABL). The statistics of sectional angle of attack (AOA), blade loads, and turbine power histories are quantified. Moreover, the degree of unsteadiness of sectional blade loads in response to atmospheric and wake turbulence is computed via a reduced frequency based on the rate-of-change in sectional AOA. Finally, the goal of this work is to make the wind energy community aware of the uncertainties associated with actuator-line modeling approaches.
Research Organization:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind and Water Technologies Office (EE-4W)
Grant/Contract Number:
EE0005481
OSTI ID:
1348918
Journal Information:
Journal of Solar Energy Engineering, Journal Name: Journal of Solar Energy Engineering Journal Issue: 3 Vol. 138; ISSN 0199-6231
Publisher:
ASMECopyright Statement
Country of Publication:
United States
Language:
English

References (31)

Tip loss corrections for wind turbine computations journal January 2005
Large eddy simulations of the flow past wind turbines: actuator line and disk modeling: LES of the flow past wind turbines: actuator line and disk modeling journal April 2014
Numerical simulations of wake characteristics of a wind turbine in uniform inflow journal January 2010
Optimal turbine spacing in fully developed wind farm boundary layers journal April 2011
Actuator line/Navier-Stokes computations for the MEXICO rotor: comparison with detailed measurements: AL/NS computations for the MEXICO rotor journal October 2011
Challenges in modelling the unsteady aerodynamics of wind turbines journal January 2002
Large Eddy Simulation of Wind Turbine Wakes journal June 2013
A concurrent precursor inflow method for Large Eddy Simulations and applications to finite length wind farms journal August 2014
Stability of helical tip vortices in a rotor far wake journal March 2007
Maximum efficiency of wind turbine rotors using Joukowsky and Betz approaches journal April 2010
A simplified vortex model of propeller and wind-turbine wakes journal May 2013
Prediction of the hub vortex instability in a wind turbine wake: stability analysis with eddy-viscosity models calibrated on wind tunnel data journal May 2014
Natural snowfall reveals large-scale flow structures in the wake of a 2.5-MW wind turbine journal June 2014
Large eddy simulation study of fully developed wind-turbine array boundary layers journal January 2010
Large-eddy simulation of a very large wind farm in a stable atmospheric boundary layer journal June 2011
Large eddy simulation study of the kinetic energy entrainment by energetic turbulent flow structures in large wind farms journal February 2014
A numerical study of the effects of atmospheric and wake turbulence on wind turbine dynamics journal January 2012
Study of the near wake of a wind turbine in ABL flow using the actuator line method journal June 2014
Actuator Line Simulation of Wake of Wind Turbine Operating in Turbulent Inflow journal June 2007
Numerical Modeling of Wind Turbine Wakes journal May 2002
A Numerical Study of Atmospheric and Wake Turbulence Impacts on Wind Turbine Fatigue Loadings journal February 2013
Guidelines for Volume Force Distributions Within Actuator Line Modeling of Wind Turbines on Large-Eddy Simulation-Type Grids journal January 2014
Large Eddy Simulations of Large Wind-Turbine Arrays in the Atmospheric Boundary Layer conference June 2012
A Large-Eddy Simulations of Wind-Plant Aerodynamics
  • Churchfield, Matthew; Lee, Sang; Moriarty, Patrick
  • 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition https://doi.org/10.2514/6.2012-537
conference November 2012
Atmospheric and Wake Turbulence Impacts on Wind Turbine Fatigue Loadings
  • Lee, Sang; Churchfield, Matthew; Moriarty, Patrick
  • 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition https://doi.org/10.2514/6.2012-540
conference November 2012
A Comparison of Actuator Disk and Actuator Line Wind Turbine Models and Best Practices for Their Use
  • Martinez, Luis; Leonardi, Stefano; Churchfield, Matthew
  • 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition https://doi.org/10.2514/6.2012-900
conference November 2012
Accuracy of State-of-the-Art Actuator-Line Modeling for Wind Turbine Wakes
  • Jha, Pankaj; Churchfield, Matthew; Moriarty, Patrick
  • 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition https://doi.org/10.2514/6.2013-608
conference January 2013
The Effect of Various Actuator-Line Modeling Approaches on Turbine-Turbine Interactions and Wake-Turbulence Statistics in Atmospheric Boundary-Layer Flow conference January 2014
Blade Boundary Layer Response to Atmospheric Boundary Layer Turbulence on a NREL 5MW Wind Turbine Blade with Hybrid URANS-LES conference January 2014
Towards a Blade-Resolved Hybrid URANS-LES of the NREL 5-MW Wind Turbine Rotor within Large Eddy Simulation of the Atmospheric Boundary Layer conference January 2014
Unraveling the Mysteries of Turbulence Transport in a Wind Farm journal June 2015

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Related Subjects

17 WIND ENERGY
42 ENGINEERING
Actuators
Blades
Simulation
Statistics as topic
Stress
Turbines
Turbulence
Wakes