Journal article
Validation of a CFD model with a synchronized triple-lidar system in the wind turbine induction zone : Validation of a CFD model with a synchronized triple-lidar system in the wind turbine induction zone
Department of Wind Energy, Technical University of Denmark1
Aerodynamic design, Department of Wind Energy, Technical University of Denmark2
Resource Assessment Modelling, Department of Wind Energy, Technical University of Denmark3
Meteorology & Remote Sensing, Department of Wind Energy, Technical University of Denmark4
A novel validation methodology allows verifying a CFD model over the entire wind turbine induction zone using measurements from three synchronized lidars. The validation procedure relies on spatially discretizing the probability density function of the measured free-stream wind speed. The resulting distributions are reproduced numerically by weighting steady-state Reynolds averaged Navier-Stokes simulations accordingly.
The only input varying between these computations is the velocity at the inlet boundary. The rotor is modelled using an actuator disc. So as to compare lidar and simulations, the spatial and temporal uncertainty of the measurements is quantified and propagated through the data processing. For all velocity components the maximal difference between measurements and model are below 4.5% relative to the average wind speed for most of the validation space.
This applies to both mean and standard deviation. One rotor radius upstream the difference reaches maximally 1.3% for the axial component.
| Language: | English |
|---|---|
| Year: | 2017 |
| Pages: | 1481-1498 |
| ISSN: | 10991824 and 10954244 |
| Types: | Journal article |
| DOI: | 10.1002/we.2103 |
| ORCIDs: | Meyer Forsting, Alexander Raul , Murcia Leon, Juan Pablo , Angelou, Nikolas , Vignaroli, Andrea and 0000-0002-4533-0551 |
Actuator disks Blockage effect Blockage effects CFD Computational fluid dynamics Data handling Induction zone Lidar Mean and standard deviations Measurements and modeling Navier Stokes equations Optical radar Probability density function Renewable Energy, Sustainability and the Environment Reynolds-averaged navier-stokes simulations SDG 7 - Affordable and Clean Energy Uncertainty analysis Uncertainty quantification Uncertainty quantifications Upstream flow Validation Validation methodologies Wind Wind turbines
