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Simulation of transient gusts on the NREL5 MW wind turbine using CFD

Länger-Möller, Annika (2017) Simulation of transient gusts on the NREL5 MW wind turbine using CFD. Wind Energy Science. Wind Energy Science Conference, 26.06.-29.06.2017, Kopenhagen, Dänemark. doi: 10.5194/wes-2017-47.

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Official URL: https://www.wind-energ-sci-discuss.net/wes-2017-47/


The performed work presents a procedure, implemented in the CFD-solver THETA, to propagate longitudinal transient gusts through a flow field by using a resolved gust approach. Both, the gust strike of a 1-cos()-gust and an extreme operating gust following the IEC-64100-1 standard, on the generic NREL 5MW wind turbine at rated operating conditions are investigated with CFD. The impact of both gusts on pressure distributions, rotor thrust, rotor torque, and flow states on the blade are examined and quantified. The flow states on the rotor blade before the gust strike and at maximum and minimum gust velocity are compared. An increased blade loading is detectable in the pressure coefficients and integrated blade loads. The friction force coefficients indicate the dynamic separation and re-attachment of the flow during the gust.

Item URL in elib:https://elib.dlr.de/115710/
Document Type:Conference or Workshop Item (Speech)
Title:Simulation of transient gusts on the NREL5 MW wind turbine using CFD
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Länger-Möller, Annikaannika.laenger (at) dlr.dehttps://orcid.org/0000-0003-1599-3239
Date:October 2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.5194/wes-2017-47
EditorsEmailEditor's ORCID iD
Soerensen, Jens NørkærDTUUNSPECIFIED
Publisher:Wind Energy Science
Keywords:Wind turbine NREL 5MW Certification test case Extreme operating gust resolved gust approach
Event Title:Wind Energy Science Conference
Event Location:Kopenhagen, Dänemark
Event Type:international Conference
Event Dates:26.06.-29.06.2017
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Wind Energy
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Wind Energy (old)
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Helicopter, BS
Deposited By: Länger, Annika
Deposited On:22 Nov 2017 11:30
Last Modified:31 Jul 2019 20:13

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