Abstract
This Chapter presents a review on two methods for the analysis of flow structures in wind turbines. These methods are higher order dynamic mode decomposition and spatio-temporal Koopman decomposition, which are highly efficient tools suitable for the detection of spatio-temporal patterns in complex flows. These two techniques have been applied to detect the main flow structures in a cross-flow wind turbine in turbulent regime, and in an horizontal wind turbine, which is laminar in the near field but transitioning to turbulence in the far field. Using these methods, a reduced number of traveling waves which are responsible for triggering the flow transition, are able to describe the aforementioned complex flows.
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Le Clainche, S., Vega, J.M., Mao, X., Ferrer, E. (2019). A Review on Two Methods to Detect Spatio-Temporal Patterns in Wind Turbines. In: Ferrer, E., Montlaur, A. (eds) Recent Advances in CFD for Wind and Tidal Offshore Turbines. Springer Tracts in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-11887-7_8
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DOI: https://doi.org/10.1007/978-3-030-11887-7_8
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