Validation of blade-resolved computational fluid dynamics for a MW-scale turbine rotor in atmospheric flow

Christian Grinderslev*, Ganesh Vijayakumar, Shreyas Ananthan, Niels N. Sørensen, Frederik Zahle, Michael A. Sprague

*Corresponding author for this work

Research output: Contribution to journalConference articleResearchpeer-review

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Abstract

In this study, simulation results of two different computational fluid dynamics codes, Nalu-Wind and EllipSys3D, are presented for a wind turbine rotor in complex yawed and sheared inflow. The results are compared to measurements from the DanAero experiments, to validate computed pressures and azimuthal trends. Despite different code methodologies and grid setups, the codes agree well in computed pressures and integrated forces along the blade for all blade azimuthal positions, however with some discrepancy in the very yawed case. Additionally, both codes capture well the azimuthal trends and force levels seen in measurements. Investigation into discrepancies shows that expanding grids before the rotor, lead to smearing of the wind profiles, which is likely the main cause of the differences in the results between the codes. Additionally, omission of the ground constraint cause discrepancies in relative velocity seen by the passing blade, due to an over speeding beneath the rotor.
Original languageEnglish
Article number052049
Book seriesJournal of Physics: Conference Series (Online)
Volume1618
Issue number5
Number of pages10
ISSN1742-6596
DOIs
Publication statusPublished - 2020
EventTORQUE 2020 - Online event, Netherlands
Duration: 28 Sep 20202 Oct 2020
https://www.torque2020.org/

Conference

ConferenceTORQUE 2020
LocationOnline event
Country/TerritoryNetherlands
Period28/09/202002/10/2020
Internet address

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