Visualization by PIV of dynamic stall on a vertical axis wind turbine
نویسندگان
چکیده
منابع مشابه
Scaling of Vertical Axis Wind Turbine Dynamic Stall
Vertical axis wind turbines (VAWT) are an alternative to horizontal axis wind turbines (HAWT) for wind and tidal energy harvesting applications. Studies of vertical axis wind turbines have heavily invested in understanding the behaviour of the complete turbine, but often with only cursory assessment of the contributions of unsteady aerodynamics of individual blades. This paper experimentally ex...
متن کاملEffect of Dynamic Stall on the Aerodynamics of Vertical-Axis Wind Turbines
Accurate simulations of the aerodynamic performance of vertical-axis wind turbines pose a significant challenge for computational fluid dynamics methods. The aerodynamic interaction between the blades of the rotor and the wake that is produced by the blades requires a high-fidelity representation of the convection of vorticity within the wake. In addition, the cyclicmotion of the blades induces...
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This case study investigates the generator of a large offshore Vertical Axis Wind Turbine (VAWT). In particular this case study focuses on the effect of the inherent cyclic torque loading of the VAWT on the generator in terms of the costs and losses experienced. A spectrum of torque control strategies were created based on the ratio q of the allowed electrical torque variation to the mechanical...
متن کاملDesign, Operation and Diagnostics of a Vertical Axis Wind Turbine
...................................................................................................................................................................... II DECLARATION ............................................................................................................................................................. IV AKNOWLEDGEMENTS .........................................
متن کاملAerodynamic Analysis of a Helical Vertical Axis Wind Turbine
Vertical axis wind turbines (VAWTs) are gradually receiving more and more interest due to their lower sensitivity to the yawed wind direction. Compared with straight blades VAWT, blades with a certain helicity show a better aerodynamic performance and less noise emission. Nowadays computational fluid dynamics technology is frequently applied to VAWTs and gives results that can reflect real flow...
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ژورنال
عنوان ژورنال: Experiments in Fluids
سال: 2008
ISSN: 0723-4864,1432-1114
DOI: 10.1007/s00348-008-0543-z