Study of wind turbine wake modeling based on a modified actuator disk model and extended k-ε turbulence model

Chang Xu, Xingxing Han, Xin Wang, Deyou Liu, Yuan Zheng, Wen Zhong Shen, Mingming Zhang

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

This paper presented an improved computational fluid dynamics (CFD) model for simulating a horizontal-axis wind turbine wake. The model used the actuator disk model to simplify the wind turbine effect on the aerodynamic field by adding an extra momentum source and an improved term to correct the underestimation issue of the wind speed deficit when applying the STD k-ε model. In addition, the model also introduced a radial distribution function to assess the non-uniform load on the actuator disk and a coefficient C4ε of the turbulent source. To validate the model, the wind turbines of Nibe `B' and Dawin 180/23 were checked by different wake models with multiple entrance velocities. Results show that the improved wake model has better prediction accuracy with experimental data and can be used for wind turbine wake calculation.
Original languageChinese
JournalZhongguo Dianji Gongcheng Xuebao
Volume35
Issue number8
Pages (from-to)1954-1961
Number of pages8
ISSN0258-8013
DOIs
Publication statusPublished - 2015

Keywords

  • Electrical and Electronic Engineering
  • Actuator disk model
  • Computational fluid dynamics (CFD)
  • Extended turbulent model
  • Wind turbine wake
  • Actuator disks
  • Actuators
  • Aerodynamics
  • Computational fluid dynamics
  • Distribution functions
  • Fluid dynamics
  • Turbulence models
  • Wakes
  • Wind
  • Aerodynamic field
  • Computational fluid dynamics modeling
  • Entrance velocity
  • Horizontal axis wind turbines
  • Prediction accuracy
  • Radial distribution functions
  • Turbulent models
  • Wind turbine wakes
  • Wind turbines

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