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Nobile, Rosario; Vahdati, Maria; Barlow, Janet F.; Mewburn-Crook, Anthony (2014)
Publisher: Elsevier
Journal: Journal of Wind Engineering and Industrial Aerodynamics
Languages: English
Types: Article
Subjects: Mechanical Engineering, Renewable Energy, Sustainability and the Environment, Civil and Structural Engineering

Classified by OpenAIRE into

arxiv: Physics::Fluid Dynamics
As the integration of vertical axis wind turbines in the built environment is a promising alternative to horizontal axis wind turbines, a 2D computational investigation of an augmented wind turbine is proposed and analysed. In the initial CFD analysis, three parameters are carefully investigated: mesh resolution; turbulence model; and time step size. It appears that the mesh resolution and the turbulence model affect result accuracy; while the time step size examined, for the unsteady nature of the flow, has small impact on the numerical results. In the CFD validation of the open rotor with secondary data, the numerical results are in good agreement in terms of shape. It is, however, observed a discrepancy factor of 2 between numerical and experimental data. Successively, the introduction of an omnidirectional stator around the wind turbine increases the power and torque coefficients by around 30–35% when compared to the open case; but attention needs to be given to the orientation of the stator blades for optimum performance. It is found that the power and torque coefficients of the augmented wind turbine are independent of the incident wind speed considered.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

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