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dc.contributor.authorRobotham, AJ
dc.date.accessioned2014-05-04T21:53:56Z
dc.date.accessioned2014-05-04T21:56:34Z
dc.date.accessioned2014-05-04T21:57:46Z
dc.date.available2014-05-04T21:53:56Z
dc.date.available2014-05-04T21:56:34Z
dc.date.available2014-05-04T21:57:46Z
dc.date.copyright2014-04-16
dc.date.issued2014-05-05
dc.identifier.citationPaper presented at the The 2014 NZ Wind Energy Conference and Exhibition, Te Papa Tongarewa: Museum of New Zealand, Wellington. Retrieved from http://www.windenergy.org.nz/store/doc/2014NZWEC_TonyRobotham.pdf
dc.identifier.urihttp://hdl.handle.net/10292/7154
dc.description.abstractIn the early years of the modern era of the wind turbine, experimental development of vertical axis wind turbines (VAWTs) was underpinned by an incremental improvement of aerodynamic performance prediction methods; the most advanced being the double actuator disk, multiple streamtube theory devised, quite independently, by David Sharpe in the UK and Ion Paraschivoiu in Canada. Commercially, VAWTs were not successful as the 3-bladed, pitch control horizontal axis turbine became the de facto configuration for the industry, and consequently progress in VAWT development stagnated. However, renewed interest in VAWTS has emerged, prompted by the development of small turbines for use in urban environments, e.g. the helical VAWT from quietrevolution. The objective of this paper will be to review recent third party findings and present the author’s own trade studies of the helical VAWT using the double actuator disk, multiple streamtube theory. Furthermore, initial investigations will be presented of a proprietary CFD software tool, which uses a mesh-less approach to fluid dynamics modelling that makes it an attractive option for dynamic/transient flows, moving bodies, and complex body surfaces. The author concludes that the challenges for predicting the aerodynamic performance remain the same but CFD offers substantial new insights into turbine behaviour
dc.format.extent20 mins
dc.publisherNew Zealand Wind Energy Association
dc.relation.replaceshttp://hdl.handle.net/10292/7152
dc.relation.replaces10292/7152
dc.relation.replaceshttp://hdl.handle.net/10292/7153
dc.relation.replaces10292/7153
dc.relation.urihttp://www.windenergy.org.nz/store/doc/2014NZWEC_TonyRobotham.pdf
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dc.titleVertical axis wind turbines - are we any better informed?
dc.rights.accessrightsOpenAccess
aut.event.placeTe Papa Museum, Wellington, New Zealand
aut.event.targetaudienceNew Zealand Wind Energy Association Conference
pubs.elements-id166620


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