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COMPUTATIONALLY INEXPENSIVE FREE VORTEX METHOD TO OBTAIN VORTEX CORE POSITION IN THE WAKE OF A HORIZONTAL AXIS WIND TURBINE

Article dans une revue avec comité de lecture
Author
MEGHLAOUI, Issam
266547 Université Badji Mokhtar [Annaba] = Badji Mokhtar University [Annaba] = (عنابة) جامعة باجي مختار–عنابة [UBMA]
DOBREV, Ivan
134975 Laboratoire de Dynamique des Fluides [DynFluid]
MASSOUH, Fawaz
134975 Laboratoire de Dynamique des Fluides [DynFluid]
BENRETEM, A. Ouahab
266547 Université Badji Mokhtar [Annaba] = Badji Mokhtar University [Annaba] = (عنابة) جامعة باجي مختار–عنابة [UBMA]
KHALFA, Dalila
266547 Université Badji Mokhtar [Annaba] = Badji Mokhtar University [Annaba] = (عنابة) جامعة باجي مختار–عنابة [UBMA]

URI
http://hdl.handle.net/10985/17839
DOI
10.1615/interjfluidmechres.2017019852
Date
2017
Journal
International Journal of Fluid Mechanics Research

Abstract

This work aims to develop a free wake model, allowing quick simulation of flow through a horizontal axis wind turbine. The rapidity of computation is particularly interesting when this aerodynamic model is integrated with complementary mechanical and electrical models in order to study the unsteady behavior of the complete chain of energy transfer in the wind turbine. The proposed model takes into account both the tangential and longitudinal vorticity of the vortex system formed behind the rotor. The employed vortex system replaces the helical wake close to the wind turbine by a series of vortex rings and the far wake by a semi-infinite vortex cylinder. By taking into account the root vortex, the proposed model is used to study the development of the near wake of a horizontal axis wind turbine for different speeds of rotation. The shape of the near wake as well as the position of the trailing vortices are compared with particle image velocimetry experimental results for a low-power wind turbine tested in the wind tunnel of Arts et Métiers-ParisTech. The model shows a good agreement between the calculation and the experience.

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