Uncertainty in loads for different constraint patterns in constrained-turbulence generation

Jennifer M. Rinker*

*Corresponding author for this work

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Abstract

This paper investigates the effect that adding constraints to turbulence simulations has on the uncertainty of resulting aeroelastic loads. The constrained turbulence is generated using the open-source constrained turbulence generator PyConTurb (“Python Constrained Turbulence”). A selection of constraint patterns were used to mimic the design of a met mast layout; i.e., the number of sonic anemometers and their locations throughout the rotor. A case study is presented to demonstrate in detail the effects of adding constraints before a larger numerical experiment is presented. The results of the numerical experiment indicate that adding constraints is extremely beneficial in reducing the mean absolute error of both operational parameters and loads. The reduction in mean absolute error ranged from 13% to 98%. The error in the extreme values and damage-equivalent loads were not impacted by the added constraints due to lack of gusts in the original signals and the similarity of the power spectra of the constrained and non-constrained signals, respectively.
Original languageEnglish
Article number052053
Book seriesJournal of Physics: Conference Series
Volume1618
Issue number5
Number of pages12
ISSN1742-6596
DOIs
Publication statusPublished - 2020
EventTORQUE 2020 - Online event, Netherlands
Duration: 28 Sep 20202 Oct 2020

Conference

ConferenceTORQUE 2020
LocationOnline event
CountryNetherlands
Period28/09/202002/10/2020

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