Preprint Article Version 1 This version is not peer-reviewed

Numerical Reproducibility of Terrain-induced Turbulence in Complex Terrain by Large-eddy Simulation (LES) Technique

Version 1 : Received: 4 July 2018 / Approved: 4 July 2018 / Online: 4 July 2018 (15:49:06 CEST)

A peer-reviewed article of this Preprint also exists.

Uchida, T. Numerical Investigation of Terrain-Induced Turbulence in Complex Terrain by Large-Eddy Simulation (LES) Technique. Energies 2018, 11, 2638. Uchida, T. Numerical Investigation of Terrain-Induced Turbulence in Complex Terrain by Large-Eddy Simulation (LES) Technique. Energies 2018, 11, 2638.

Journal reference: Energies 2018, 11, 2638
DOI: 10.3390/en11102638

Abstract

In the present study, field observation wind data from the time of the wind turbine blade damage accident on Shiratakiyama Wind Farm were analyzed in detail. In parallel, high-resolution LES turbulence simulations were performed in order to examine the model’s ability to numerically reproduce terrain-induced turbulence. The comparison of the observed and simulated time series (1 second average values) from a 10 minute period from the time of the accident led to the conclusion that the settings of the horizontal grid resolution and time increment are important to numerically reproduce the terrain-induced turbulence that caused the wind turbine blade damage accident on Shiratakiyama Wind Farm. A spectral analysis of the same set of observed and simulated data revealed that the simulated data reproduced the energy cascade of the actual terrain-induced turbulence well.

Subject Areas

complex terrain; terrain-induced turbulence, LES, spectral analysis

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