Prediction of wind-turbine fatigue loads in forest regions based on turbulent LES inflow fields
Artikel i vetenskaplig tidskrift, 2017

Large-eddy simulations (LES) were used to predict the neutral atmospheric boundary layer over a sparse and a dense forest, as well as over grass-covered flat terrain. The forest is explicitly represented in the simulations through momentum sink terms. Turbulence data extracted from the LES served then as inflow turbulence for the simulation of the dynamic structural response of a generic wind turbine. In this way, the impact of forest density, wind speed and wind-turbine hub height on the wind-turbine fatigue loads was studied. Results show for example significantly increased equivalent fatigue loads above the two forests. Moreover, a comparison between LES turbulence and synthetically generated turbulence in terms of load predictions was made and revealed that synthetic turbulence was able to excite the same spectral peaks as LES turbulence but lead to consistently lower equivalent fatigue loads. Copyright (c) 2016 John Wiley & Sons, Ltd.

large-eddy simulation

model

p91

Engineering

wind turbine

parameters

Energy & Fuels

journal of the atmospheric sciences

resolution

statistics

fatigue loads

large-eddy simulation

foliar density

forest canopy

v29

ardorff jw

tensor

atmospheric boundary-layer

atmospheric turbulence

1972

canopy flow

complex terrain

Författare

Bastian Nebenführ

Svensk Vindkraftstekniskt Centrum (SWPTC)

Chalmers, Tillämpad mekanik, Strömningslära

Lars Davidson

Svensk Vindkraftstekniskt Centrum (SWPTC)

Chalmers, Tillämpad mekanik

Chalmers, Tillämpad mekanik, Strömningslära

Wind Energy

1095-4244 (ISSN) 1099-1824 (eISSN)

Vol. 20 6 1003-1015

Drivkrafter

Hållbar utveckling

Styrkeområden

Building Futures

Energi

Ämneskategorier

Energiteknik

Naturresursteknik

Annan naturresursteknik

DOI

10.1002/we.2076

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Senast uppdaterat

2018-03-19