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Journal article

Results of the GABLS3 diurnal-cycle benchmark for wind energy applications: Paper

From

National Renewable Energy Center1

University of Colorado Boulder2

Aerodynamic design, Department of Wind Energy, Technical University of Denmark3

University of Porto4

Barcelona Supercomputing Center-Centro Nacional de Supercomputación5

Department of Wind Energy, Technical University of Denmark6

Resource Assessment Modelling, Department of Wind Energy, Technical University of Denmark7

Technical University of Denmark8

National Renewable Energy Laboratory9

National Center for Atmospheric Research10

KU Leuven11

...and 1 more

We present results of the GABLS3 model intercomparison benchmark revisited for wind energy applications. The case consists of a diurnal cycle, measured at the 200-m tall Cabauw tower in the Netherlands, including a nocturnal low-level jet. The benchmark includes a sensitivity analysis of WRF simulations using two input meteorological databases and five planetary boundary-layer schemes.

A reference set of mesoscale tendencies is used to drive microscale simulations using RANS k- and LES turbulence models. The validation is based on rotor-based quantities of interest. Cycle-integrated mean absolute errors are used to quantify model performance. The results of the benchmark are used to discuss input uncertainties from mesoscale modelling, different meso-micro coupling strategies (online vs offline) and consistency between RANS and LES codes when dealing with boundary-layer mean flow quantities.

Overall, all the microscale simulations produce a consistent coupling with mesoscale forcings.

Language: English
Publisher: IOP Publishing
Year: 2017
Pages: 012037
Proceedings: Wake Conference 2017
ISSN: 17426596 and 17426588
Types: Journal article
DOI: 10.1088/1742-6596/854/1/012037
ORCIDs: Cavar, Dalibor and Van Der Laan, M. P.

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