Quantifying variability of Large Eddy Simulations of very large wind farms

Søren Juhl Andersen, Björn Witha, Simon-Philippe Breton, Jens Nørkær Sørensen, Robert Flemming Mikkelsen, S. Ivanell

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Abstract

Large Eddy Simulations are inherently dynamic as the largest scales are resolved and the smallest scales are modeled temporally. This raises challenges for simulations including very large scales such as atmospheric flows, which require very long simulation times. Simple averages fail at capturing these dynamics and potentially yield misleading interpretations concerning the capabilities of different models when tested in blind tests or in benchmarking exercises such as Wakebench, where results from different flow models are compared. This article will present results from very large wind farm simulations using Actuator Disc (AD) and Line (AL) models for two different turbine spacings with turbulent inflow. The results of each numerical flow model include a certain variability, and it will be examined if different models result in comparable probability distributions.
Original languageEnglish
Article number012027
Book seriesJournal of Physics: Conference Series (Online)
Volume625
Number of pages12
ISSN1742-6596
DOIs
Publication statusPublished - 2015
EventWake Conference 2015 - Visby, Sweden
Duration: 9 Jun 201511 Jun 2015

Conference

ConferenceWake Conference 2015
Country/TerritorySweden
CityVisby
Period09/06/201511/06/2015

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