Hurricane Eyewall Winds and Structural Response of Wind Turbines

Julie Lundquist, Amber Kapoor, Slimane Ouakka, Sanjay Arwade, Matthew Lackner, Andrew Myers, Rochelle Worsnop, George Bryan

Research output: Contribution to journalArticle

9 Scopus Citations

Abstract

This paper describes the analysis of a wind turbine and support structure subject to simulated hurricane wind fields. The hurricane wind fields, which result from a Large Eddy Simulation of a hurricane, exhibit features such as very high gust factors (> 1.7), rapid direction changes (30 degrees in 30 sec) and substantial veer. Wind fields including these features have not previously been used in an analysis of a wind turbine and their effect on structural loads may be an important driver of enhanced design considerations. With a focus on blade root loads and tower base loads, the simulations show that these features of hurricane wind fields can lead to loads that are substantially in excess of those that would be predicted were wind fields with equally high mean wind speeds but without associated direction change and veer used in the analysis. This result, if further verified for a range of hurricane and tropical storm simulations, should provide an impetus for revisiting design standards.
Original languageAmerican English
Number of pages24
JournalWind Energy Science Discussions
DOIs
StatePublished - 2019

Bibliographical note

See NREL/JA-5000-76101 for final paper as published in Wind Energy Science

NREL Publication Number

  • NREL/JA-5000-74194

Keywords

  • hurricane
  • large-eddy simulation
  • response
  • wind energy
  • wind turbine

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