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Large Wind Turbine Rotor Design using an Aero-Elastic / Free-Wake Panel Coupling Code

Authors
  • Sessarego, Matias
  • Ramos García, Néstor
  • Shen, Wen Zhong
  • Sørensen, Jens Nørkær
Publication Date
Jan 01, 2016
Source
Online Research Database In Technology
License
Unknown
External links

Abstract

Despite the advances in computing resources in the recent years, the majority of<br/>large wind-turbine rotor design problems still rely on aero-elastic codes that use blade element momentum (BEM) approaches to model the rotor aerodynamics. The present work describes an approach to wind-turbine rotor design by incorporating a higher- delity free-wake panel aero-elastic coupling code called MIRAS-FLEX. The optimization procedure includes a series of design load cases and a simple structural design code. Due to the heavy MIRAS-FLEX computations, a surrogate-modeling approach is applied to mitigate the overall computational cost of the optimization. Improvements in cost of energy, annual energy production, maximum ap-wise root bending moment, and blade mass were obtained for the NREL 5MW baseline wind turbine.

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