Influence of Solidity on Vertical Axis Wind Turbines

Yıl 2015, Cilt: 3 Sayı: 3, 215 - 217, 29.06.2015

M. Teresa Parra-santos Cristobal Uzarraga Armando Gallegos Francisco Castro

https://doi.org/10.18100/ijamec.42848

Cited By: 6

Öz

This paper aims to predict the performance of a VAWT. The H-type Darrieus turbine consists of three straight blades with shape of aerofoil attached to a rotating vertical shaft. Bearing in mind the overall flow is characterized by important secondary flows, the turbulence model selected was realizable k-epsilon with non-equilibrium wall functions. Conservation equations were solved with a Third-Order MUSCL scheme using SIMPLE to couple continuity and momentum equations. A parametric study has been carried out to analyse the solidity effect on the non-dimensional curves so that the range of tip speed ratio of operation could be predicted as well as their self-starting behaviour.

Anahtar Kelimeler

VAWT; CFD; solidity; efficiency

Original Research Paper

Öz

Kaynakça

• Baker J. R. 1983 "Features to aid or enable self starting of fixed pitch low solidity vertical axis wind turbines". Journal of Wind Engineering and Industrial Aerodynamics. Vol. 15 pp.369-380.
• Shawn A., Fiedler A., Tullis S. 2012 "Flow separation on a high Reynolds number, high solidity vertical axis wind turbine with straight and canted blades and canted blades with fences" Renewable Energy, Vol. 41, pp. 13-22
• Uzarraga N.C., Gallegos A., Parra M.T., Beltran J.M. 2012 "Numerical Analysis of Airfoils used at VAWT", ASME ESFuelCell2012-91113
• Liu X., Dang Q., Xi G. 2008. "Performance improvement of a centrifugal fam by using CFD". Engineering Applications of Computational Fluid Mechanics Vol. 2 no. 2 pp. 130-140