Numerical Investigation of Wind Turbine Wakes Under High Thrust Coefficient

Luis Martinez-Tossas, Emmanuel Branlard, Kelsey Shaler, Ganesh Vijayakumar, Shreyas Ananthan, Phillip Sakievich, Jason Jonkman

Research output: Contribution to journalArticlepeer-review

10 Scopus Citations

Abstract

We study wind turbine wakes of rotors operating at high thrust coefficients (CT > 24/25) using large-eddy simulations with a rotating actuator disk model. Wind turbine wakes at high thrust coefficients are different from wakes at low thrust coefficients. Wakes behave differently at high thrust, with increased turbulence and faster recovery. Lower induction in the wake is achieved because wakes in high-thrust conditions recover much faster than in normal operating conditions. This enhanced recovery is possible thanks to the turbulence generated in the near wake. We explore the mechanism behind this behavior and propose a simple model to reproduce it. We also propose a Gaussian fit for the wakes under high-thrust conditions and use it use it to initialize an Ainslie type model within the FAST.Farm framework.

Original languageAmerican English
Pages (from-to)605-617
Number of pages13
JournalWind Energy
Volume25
Issue number4
DOIs
StatePublished - 2022

Bibliographical note

Publisher Copyright:
© 2021 The Authors. Wind Energy published by John Wiley & Sons Ltd.

NREL Publication Number

  • NREL/JA-5000-80856

Keywords

  • FAST.Farm
  • high thrust coefficient
  • large-eddy simulations
  • wake

Fingerprint

Dive into the research topics of 'Numerical Investigation of Wind Turbine Wakes Under High Thrust Coefficient'. Together they form a unique fingerprint.

Cite this