Final report of Task 29, Phase IV: Detailed Aerodynamics of Wind Turbines

report
This report describes the final results of the fourth phase of IEA TCP Wind Task 29. The project period of this fourth phase was from January 1st 2018 until December 31st 2020. It was the follow-up of three former IEA Task 29 phases (often denoted as Mexnext-I to Mexnext-III). In all phases wind turbine aerodynamic models were validated and improved with detailed aerodynamic measurements. In these detailed aerodynamic experiments pressure distributions at different locations along the rotor blades are measured anyhow where measurements of e.g. inflow velocities and boundary layer transition are very nice to know. The first three phases were mainly built around wind tunnel measurements on a small scale wind turbine with rotor diameter of 4.5 meter from the (New) Mexico project but the present phase was built around field measurements from the DanAero experiment. This DanAero experiment was carried out at atmospheric field conditions on a 2MW turbine by Danish Technical University DTU and 4 industrial partners (LM Glassfiber, Siemens WindPower, Vestas and Dong Energy) in 2 periods from 2007 until 2010 and from 2010 until 2013. Amongst others surface pressures and inflow velocities were measured at four sections along a blade and a row of surface flush mounted microphones was installed at the outer part of the blade.
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TNO Identifier
1007156
Collation
266 p.