FAST.Farm Load Validation for Single Wake Situations at Alpha Ventus

Matthias Kretschmer, Jason Jonkman, Vasilis Pettas, Po Cheng

Research output: Contribution to journalArticlepeer-review

13 Scopus Citations


The main objective of the presented work is the validation of the simulation tool FAST.Farm for the calculation of power and structural loads in single wake situations; the basis for the validation is the measurement database of the operating offshore wind farm alpha ventus. The approach is described in detail and covers the calibration of the aeroelastic turbine model, transfer of environmental conditions to simulations, and comparison between simulations and adequately filtered measurements. It is shown that FAST.Farm accurately predicts power and structural load distributions over wind direction with discrepancies of less than 10% for most of the cases compared to the measurements. Additionally, the frequency response of the structure is investigated, and it is calculated by FAST.Farm in good agreement with the measurements. In general, the calculation of fatigue loads is improved with a wake-added turbulence model added to FAST.Farm in the course of this study.

Original languageAmerican English
Pages (from-to)1247-1262
Number of pages16
JournalWind Energy Science
Issue number5
StatePublished - 2021

Bibliographical note

Publisher Copyright:
© 2021 Matthias Kretschmer et al.

NREL Publication Number

  • NREL/JA-5000-80612


  • alpha ventus
  • dynamic wake meandering
  • FAST.Farm
  • OpenFAST
  • single wake
  • structural loads
  • validation
  • wake-added turbulence


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