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Wind Turbine Wake in Atmospheric Turbulence

Risø National Laboratory for Sustainable Energy
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  • This Thesis Describes The Different Steps Needed To Design A Steadystate Computational Fluid Dynamic
  • The Ultimate Goal Of The Project Was To Design A Tool That Could Analyze And Extrapolate Systematica
  • The Most Attractive Solution Was The Actuator Disc Method With The Steady State K-ε Turbulence Model
  • The First Step To Design Such A Tool Is The Treatment Of The Forces
  • This Thesis Presents A Computationally Inexpensive Method To Apply Discrete Body Forces Into The Fin
  • Which Avoids The Pressurevelocity Decoupling Issue
  • The Second Step Is To Distribute The Body Forces In The Computational Domain Accordingly To Rotor Lo
  • This Thesis Presents A Generic Flexible Method That Associates Any Kind Of Shapes With The Computati
  • The Special Case Of The Actuator Disc Performs Remarkably Well In Comparison With Conway’S Heavily L
  • Even With A Coarse Discretization
  • The Third Step Is To Model The Atmospheric Turbulence
  • The Standard K-ε Model Is Found To Be Unable To Model At The Same Time The Atmospheric Turbulence An
  • A Comparison With A Large Eddy Simulation (Les) Shows That The Problem Mainly Comes From The Assumpt
  • Which Are Deeply Invalidated In The Wind Turbine Wake Region
  • Different Models That Intent To Correct The K-ε Model’S Issues Are Investigated
  • Of Which None Of Them Is Found To Be Adequate
  • The Mixing Of The Wake In The Atmosphere Is A Deeply Non-Local Phenomenon That Is Not Handled Correc


Wind Turbine Wake in Atmospheric Turbulence - DTU Orbit (18/03/14) Wind Turbine Wake in Atmospheric Turbulence - DTU Orbit (18/03/14) Réthoré P-EM 2009. Wind Turbine Wake in Atmospheric Turbulence. Roskilde: Risø National Laboratory for Sustainable Energy. 186 p. (Risø-PhD; No. 53(EN)).

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