Validation of FAST.Farm Against Large-Eddy Simulations: Article No. 062005

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Abstract

FAST.Farm is a new midfidelity, multiphysics engineering tool for modeling the power performance and structural loads of wind turbines within a wind farm, including wake and array effects. Previous calibration of the tuneable model parameters of FAST.Farm has shown that its prediction of wake dynamics for a single wind turbine across different atmospheric stability conditions and nacelle-yaw errors matches well with high-fidelity large-eddy simulation at a small fraction of the computational expense. This paper presents a validation of FAST.Farm against large-eddy simulation for a series of cases - independent from those used to support the calibration - considering single-turbine and small wind-farm scenarios, which are both subject to variations in inflow and control. The validation has demonstrated that FAST.Farm reasonably accurately predicts: (1) thrust and power for individual turbines both in isolation and down the row of the small wind farm, (2) wake meandering behavior across different atmospheric conditions, and (3) averaged wake-deficit advection, evolution, and merging effects. The validation also highlights potential physics that could be improved in FAST.Farm in the future.
Original languageAmerican English
Number of pages13
JournalJournal of Physics: Conference Series
Volume1037
DOIs
StatePublished - 2018

NREL Publication Number

  • NREL/JA-5000-71376

Keywords

  • FAST.Farm SOWFA
  • power
  • structural loads
  • validation
  • wake and array effects
  • wind farm

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