• Physique/Mécanique/Mécanique des fluides
  
• Planète et Univers/Océan, Atmosphère
  
• Sciences de l'environnement/Ingénierie de l'environnement
  
• Physique/Physique/Géophysique
  
• Planète et Univers
  
• Planète et Univers/Sciences de la Terre/Océanographie
  
• Planète et Univers/Sciences de la Terre/Climatologie
  
• Planète et Univers/Sciences de la Terre/Météorologie
  
• Planète et Univers/Sciences de la Terre/Hydrologie
  
• Sciences de l'environnement/Milieux et Changements globaux
  

References The recent growth of the offshore wind energy market has significantly increased the technological importance of the offshore vertical axis wind turbines (VAWT), with Pitch Control both as floating or fixed installations. The project AEROPITCH co-investigated by EOLFI, CORETI and IRPHE aims at the development of a robust and sophisticated offshore VAWT. In this context through the AEROPITCH project, we have developed and tested VAWT models through analytical, numerical and experimental approach. Abstract • Selection of Blade Profiles Power coefficients / TSR • Aerodynamic force calculation on S1046 Lift Coefficient Context and Objectives Simulations through unsteady CFD, unsteady LLT, steady state DMST Wind Tunnel Experiments, forces and momentum sensors, Hot wire velocimetry, PIV dof sensor PIV equipment Methods and Materials  Numerical and experimental study on a VAWT model with Pitched Blades  DMST is a very fast processing tool for a comparative analysis among large number designs and conditions with lower order accuracy Selig profile S1046 has the best characteristics for the wind tunnel experiments at target chord Reynolds numbers in the range of 60 000 to 140 000  Experimental results using our VAWT model with S1046 blades are in accordance with Xfoil numerical results and Sandia experiments with Naca 0015 blades  The pitch control divides the start speed by a factor 4 !  The pitch control multiplies the performance of the wind turbine by a factor 4 Conclusion Results Exploring the possibility of VAWT for offshore wind turbine applications with Pitch Control  Wind tunnel experiments of VAWT with pitch control Design of a vertical axis wind turbine Development of pitch control law Testing of vertical axis wind turbine with and without pitch control 180-180

The rapid shrinkage of fossil fuel sources and contrary fast-growing energy needs of social, industrial and technological enhancements, necessitate the need of different approaches to exploit the various renewable energy sources. Among the several technological alternatives, wind energy is one of the most emerging prospective because of its renewable, sustainable and environment friendly nature, especially at its offshore locations. The recent growth of the offshore wind energy market has significantly increased the technological importance of the offshore vertical axis wind turbines, both as floating or fixed installations. Particularly, the class of lift-driven vertical axis wind turbines is very promising; however, the existing design and technology is not competent enough to meet the global need of offshore wind energy. In this context, the project AEROPITCH co-investigated by EOLFI, CORETI and IRPHE aims at the development of a robust and sophisticated offshore vertical axis wind turbine, which would bring decisive competitive advantage in the offshore wind energy market. In this paper, simulations have been performed on the various airfoils of NACA 4-series, 5-series and Selig profiles at different chord Reynolds numbers of 60000, 100000 and 140000 using double multiple streamtube model with tip loss correction. Based on the power coefficient, the best suitable airfoil S1046 has been selected for a 3-bladed vertical axis wind turbine. Besides the blade profile, the turbine design parameters such as aspect ratio and solidity ratio have also been investigated by varying the diameter and chord of the blade. Further, a series of wind tunnel experiments will be performed on the developed wind turbine, and the implementation of active pitch control in the developed turbine will be investigated in future research.