CFD modelling and the development of the diffuser augmented wind turbine

D.G. Phillips , P.J. Richards , R.G.J. Flay(New Zealand)

Abstract

Research being undertaken at the University of Auckland has enabled Vortec Energy tornimprove the performance of the Vortec 7 Diffuser Augmented Wind Turbine. Computational Fluid Dynamicrn(CFD) modelling of the Vortec 7 was used to ascertain the effectiveness of geometric modifications to thernVortec 7. The CFD work was then developed to look at new geometries, and refinement of these led torngreater power augmentation for a given diffuser exit area ratio. Both full scale analysis of the Vortec 7 andrna wind tunnel investigation of the development design have been used for comparison with the CFD model.

Key Words

DAWT; diffuser augmented wind turbine; CFD; computational fluid dynamic modelling; PHOENICS; low-Reynolds number; k- e turbulence model; wind tunnel; Vortec Energy.

Address

D. G. Phillips, P. J. Richards and R. G. J. Flay, Department of Mechanical Engineering, The University of Auckland, Private Bag 92019, Auckland, New Zealand

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