Influence of blade overlap and blade angle on the aerodynamic coefficients in vertical axis swirling type Savonius wind turbine

Paper

Al-Faruk, A. and Sharifian, A.. 2014. "Influence of blade overlap and blade angle on the aerodynamic coefficients in vertical axis swirling type Savonius wind turbine." Chowdhury, Harun and Alam, Firoz (ed.) 19th Australasian Fluid Mechanics Conference (AFMC 2014). Melbourne, Australia 08 - 11 Dec 2014 Melbourne, Australia.
Paper/Presentation Title

Influence of blade overlap and blade angle on the aerodynamic coefficients in vertical axis swirling type Savonius wind turbine

Presentation TypePaper
AuthorsAl-Faruk, A. (Author) and Sharifian, A. (Author)
EditorsChowdhury, Harun and Alam, Firoz
Journal or Proceedings TitleProceedings of the 19th Australasian Fluid Mechanics Conference (AFMC 2014)
ERA Conference ID42494
Number of Pages4
Year2014
Place of PublicationMelbourne, Australia
ISBN9780646596952
Conference/Event19th Australasian Fluid Mechanics Conference (AFMC 2014)
Australasian Fluid Mechanics Conference
Event Details
Australasian Fluid Mechanics Conference
Rank
A
A
A
A
A
A
Event Details
19th Australasian Fluid Mechanics Conference (AFMC 2014)
Event Date
08 to end of 11 Dec 2014
Event Location
Melbourne, Australia
Abstract

When compared with other wind turbines, drag driven vertical axis Savonius wind turbine offers lower power coefficient due to its slow turning speed. However, they have many advantages over others, such as simplicity of manufacturing, ability to operate in any wind direction, and having a good starting torque at low wind speed. They are well suited to be integrated in urban environment as small scale power generating wind mills.
Waste heats or naturally available heat sources such as geothermal and solar energy can be utilized to produce swirling flow when there is a source of angular momentum. Previous computational work suggests that the performance of Savonius turbine can be improved by providing a hot swirling flow inside the turbine chamber. The swirling flow can be induced by a design similar to that of split channels, which includes one or a few vertical slits, and is currently used to onset fire whirls in the laboratories.
In the present experimental study, the influence of blade overlap, blade arc angle and the diameter of the hot air inlet hole on the torque and power coefficient have been investigated. The results indicate that the maximum power coefficient for a 258 mm diameter rotor occurs at 28 mm blade overlap, '195°' blade angle and 9 mm diameter of hot air inlet hole.

ANZSRC Field of Research 2020401201. Aerodynamics (excl. hypersonic aerodynamics)
401703. Energy generation, conversion and storage (excl. chemical and electrical)
401706. Numerical modelling and mechanical characterisation
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Byline AffiliationsComputational Engineering and Science Research Centre
Institution of OriginUniversity of Southern Queensland
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