Abstract
In this paper, wake interaction resulting from two stall regulated turbines aligned with the incoming wind is studied experimentally
and numerically. The experimental work is based on a full-scale remote sensing campaign involving three nacelle
mounted scanning lidars. A thorough analysis and interpretation of the measurements is performed to overcome either the
lack of or the poor calibration of relevant turbine operational sensors, as well as other uncertainties inherent in resolving
wakes from full-scale experiments. The numerical work is based on the in-house EllipSys3D computational fluid dynamics
flow solver, using large eddy simulation and fully turbulent inflow. The rotors are modelled using the actuator disc technique.
A mutual validation of the computational fluid dynamics model with the measurements is conducted for a selected
dataset, where wake interaction occurs. This validation is based on a comparison between wake deficit, wake generated turbulence,
turbine power production and thrust force. An excellent agreement between measurement and simulation is seen
in both the fixed and the meandering frame of reference. Copyright © 2015 John Wiley & Sons, Ltd.
Original language | English |
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Journal | Wind Energy |
Volume | 19 |
Issue number | 8 |
Pages (from-to) | 1535-1551 |
ISSN | 1095-4244 |
DOIs | |
Publication status | Published - 2016 |
Keywords
- Wake interaction
- Wake Meandering
- Turbulence
- Lidar
- large eddy simulation
- Actuator disc modelling