IEA-Wind Task 31 Wakebench
Published June 1, 2017 | Version v1
Presentation Open

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

Creators

  • 1. CENER
  • 2. KU-Leuven
  • 3. BSC
  • 4. DTU
  • 5. NREL
  • 6. NCAR
  • 7. CU-Boulder
  • 8. FEUP-Porto

Description

Presentation at the Wake Conference, Visby, 1 June 2017. The associated paper can be found at: http://iopscience.iop.org/article/10.1088/1742-6596/854/1/012037

Abstract

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-ε 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.

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SanzRodrigo_GABLS3_WC_Jun17.pdf

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Additional details

Related works

Is supplemented by
Conference paper: 10.1088/1742-6596/854/1/012037 (DOI)

Funding

European Commission
NEWA - New European Wind Atlas Joint Programme 618122
European Commission
MESOWAKE - Unified mesoscale to wind turbine wake downscaling based on an open-source model chain 624562