A Large Eddy Simulation-Actuator Line Model framework to simulate a scaled wind energy facility and its application

Draper, Martín; Guggeri, Andrés; Mendina, Mariana; Usera, Gabriel; Campagnolo, Filippo

doi:10.1016/j.jweia.2018.09.010

Cited by 22 publications

(15 citation statements)

References 48 publications

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“…The wind turbine parameters are shown in Table 1. Draper [33] used two short-range WindScanners to obtain a reliable high-resolution wind field map in the wind tunnel test measurement of the G1 wind turbine, and both short-range LiDARs were installed near the tunnel wall 7D upstream of the wind turbine. The LiDARs provided mean wind speeds up to 390 Hz, and the plane created by the LiDAR beam is mostly horizontal (±3 • ).…”

Section: Simulation Setup 231 Reference Wind Turbinementioning

confidence: 99%

Research on the Power Capture and Wake Characteristics of a Wind Turbine Based on a Modified Actuator Line Model

Xue

Duan²,

et al. 2022

Energies

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On a wind farm, the wake has an important impact on the performance of the wind turbines. For example, the wake of an upstream wind turbine affects the blade load and output power of the downstream wind turbine. In this paper, a modified actuator line model with blade tips, root loss, and an airfoil three-dimensional delayed stall was revised. This full-scale modified actuator line model with blades, nacelles, and towers, was combined with a Large Eddy Simulation, and then applied and validated based on an analysis of wind turbine wakes in wind farms. The modified actuator line model was verified using an experimental wind turbine. Subsequently, numerical simulations were conducted on two NREL 5 MW wind turbines with different staggered spacing to study the effect of the staggered spacing on the characteristics of wind turbines. The results show that the output power of the upstream turbine stabilized at 5.9 MW, and the output power of the downstream turbine increased. When the staggered spacing is R and 1.5R, both the power and thrust of the downstream turbine are severely reduced. However, the length of the peaks was significantly longer, which resulted in a long-term unstable power output. As the staggered spacing increased, the velocity in the central near wake of the downstream turbine also increased, and the recovery speed at the threshold of the wake slowed down. The modified actuator line model described herein can be used for the numerical simulation of wakes in wind farms.

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Section: Simulation Setup 231 Reference Wind Turbinementioning

confidence: 99%

Research on the Power Capture and Wake Characteristics of a Wind Turbine Based on a Modified Actuator Line Model

Xue

Duan²,

et al. 2022

Energies

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“…The solver has been applied and validated in several different fields, including wind energy and wind turbine simulations [31], blood flow in arteries [32], and atmospheric pollutant transport [25,33]. For a full description of the solver capabilities, please see [25].…”

Section: Cpu-based Solvermentioning

confidence: 99%

Heterogeneous Computing (CPU–GPU) for Pollution Dispersion in an Urban Environment

2020

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The use of Computational Fluid Dynamics (CFD) to assist in air quality studies in urban environments can provide accurate results for the dispersion of pollutants. However, due to the computational resources needed, simulation domain sizes tend to be limited. This study aims to improve the computational efficiency of an emission and dispersion model implemented in a CPU-based solver by migrating it to a CPU–GPU-based one. The migration of the functions that handle boundary conditions and source terms for the pollutants is explained, as well as the main differences present in the solvers used. Once implemented, the model was used to run simulations with both engines on different platforms, enabling the comparison between them and reaching promising time improvements in favor of the use of GPUs.

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“…To represent wind turbine rotors and their interaction with the wind flow in the simulations, the Actuator Line Model (ALM) has been implemented in the code [45,46]. A brief description of this model is presented below, for further information about its validation and application cases please see [30][31][32][47][48][49][50][51].…”

Section: Actuator Line Modelmentioning

confidence: 99%

Large Eddy Simulation of an Onshore Wind Farm with the Actuator Line Model Including Wind Turbine’s Control below and above Rated Wind Speed

Guggeri

Draper

2019

Energies

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As the size of wind turbines increases and their hub heights become higher, which partially explains the vertiginous increase of wind power worldwide in the last decade, the interaction of wind turbines with the atmospheric boundary layer (ABL) and between each other is becoming more complex. There are different approaches to model and compute the aerodynamic loads, and hence the power production, on wind turbines subject to ABL inflow conditions ranging from the classical Blade Element Momentum (BEM) method to Computational Fluid Dynamic (CFD) approaches. Also, modern multi-MW wind turbines have a torque controller and a collective pitch controller to manage power output, particularly in maximizing power production or when it is required to down-regulate their production. In this work the results of a validated numerical method, based on a Large Eddy Simulation-Actuator Line Model framework, was applied to simulate a real 7.7 MNW onshore wind farm on Uruguay under different wind conditions, and hence operational situations are shown with the aim to assess the capability of this approach to model actual wind farm dynamics. A description of the implementation of these controllers in the CFD solver Caffa3d, presenting the methodology applied to obtain the controller parameters, is included. For validation, the simulation results were compared with 1 Hz data obtained from the Supervisory Control and Data Acquisition System of the wind farm, focusing on the temporal evolution of the following variables: Wind velocity, rotor angular speed, pitch angle, and electric power. In addition to this, simulations applying active power control at the wind turbine level are presented under different de-rate signals, both constant and time-varying, and were subject to different wind speed profiles and wind directions where there was interaction between wind turbines and their wakes.

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A Large Eddy Simulation-Actuator Line Model framework to simulate a scaled wind energy facility and its application

Cited by 22 publications

References 48 publications

Research on the Power Capture and Wake Characteristics of a Wind Turbine Based on a Modified Actuator Line Model

Research on the Power Capture and Wake Characteristics of a Wind Turbine Based on a Modified Actuator Line Model

Heterogeneous Computing (CPU–GPU) for Pollution Dispersion in an Urban Environment

Large Eddy Simulation of an Onshore Wind Farm with the Actuator Line Model Including Wind Turbine’s Control below and above Rated Wind Speed

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