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Novel experimental power curve determination and computational methods for the performance analysis of vertical axis wind turbines / Jonathan M. Edwards in Transactions of the ASME. Journal of solar energy engineering, Vol. 134 N° 3 (Août 2012) 

Public ISBD [article]  in Transactions of the ASME. Journal of solar energy engineering > Vol. 134 N° 3 (Août 2012) . - 11 p. Titre : Novel experimental power curve determination and computational methods for the performance analysis of vertical axis wind turbines Type de document : texte imprimé Auteurs : Jonathan M. Edwards, Auteur ; Louis Angelo Danao, Auteur ; Robert J. Howell, Auteur Année de publication : 2012 Article en page(s) : 11 p. Note générale : solar energy Langues : Anglais (eng) Mots-clés : vertical  axis  wind  turbine  (VAWT);  computational  fluid  dynamics  (CFD);  torque  measurement;  aerodynamics;  particle  image  velocimetry  (PIV) Index. décimale : 621.47 Résumé : Through novel experimental and computational methods, this paper details a study into the performance aerodynamics of a small-scale vertical axis wind turbine (VAWT). A novel experimental method is first developed and validated before the results are compared to those of a computational fluid dynamics (CFD) study. The computational study is further validated by comparing the flow field to PIV data. The CFD simulations are then analyzed to explain the aerodynamics in further detail, including a discussion of the effect of the streamwise induction on the local angle of attack on the blade. The University of Sheffield's three-bladed NACA0022 small-scale VAWT experimental rig is mounted within the University's Low-Speed Wind Tunnel. Tests at tip speed ratios up to 5 were carried out, where the blade Reynolds number (based on rotational speed) ranged from 37,500 to 75,000. The same test conditions are simulated using unsteady computational fluid dynamics. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000134000003 [...] [article] Novel experimental power curve determination and computational methods for the performance analysis of vertical axis wind turbines [texte imprimé] / Jonathan M. Edwards, Auteur ; Louis Angelo Danao, Auteur ; Robert J. Howell, Auteur . - 2012 . - 11 p. solar energy Langues : Anglais (eng) in Transactions of the ASME. Journal of solar energy engineering > Vol. 134 N° 3 (Août 2012) . - 11 p. Mots-clés : vertical  axis  wind  turbine  (VAWT);  computational  fluid  dynamics  (CFD);  torque  measurement;  aerodynamics;  particle  image  velocimetry  (PIV) Index. décimale : 621.47 Résumé : Through novel experimental and computational methods, this paper details a study into the performance aerodynamics of a small-scale vertical axis wind turbine (VAWT). A novel experimental method is first developed and validated before the results are compared to those of a computational fluid dynamics (CFD) study. The computational study is further validated by comparing the flow field to PIV data. The CFD simulations are then analyzed to explain the aerodynamics in further detail, including a discussion of the effect of the streamwise induction on the local angle of attack on the blade. The University of Sheffield's three-bladed NACA0022 small-scale VAWT experimental rig is mounted within the University's Low-Speed Wind Tunnel. Tests at tip speed ratios up to 5 were carried out, where the blade Reynolds number (based on rotational speed) ranged from 37,500 to 75,000. The same test conditions are simulated using unsteady computational fluid dynamics. DEWEY : 621.47 ISSN : 0199-6231 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000134000003 [...]