%0 Journal Article
%T TORNADO concept and realisation of a rotor for small VAWTs
%A Horia DUMITRESCU
%A Alexandru DUMITRACHE
%A Florin FRUNZULICA
%A Anton PAL
%J INCAS Bulletin
%D 2013
%I National Institute for Aerospace Research ˇ°Elie Carafoliˇ± - INCAS
%R 10.13111/2066-8201.2013.5.3.8
%X The concept of a three-tier configuration for a vertical axis rotor was successfully developed into a experimental model. The rotor assembly is divided into three tiers with three straight blades in each tier. The three-tiers are shifted by an angle of 400 generating a full helical flow field inside the rotor. Thereby the new configuration has some different mechanism of torque generation as other Darrieus rotors. The three-tier configuration facilitates the operation by enabling the turbine to self-start at wind velocity as low as 2 m/s with good performance and a smoother driving torque. At the same time the design couples an esthetic appearance with low noise level.
%K VAWT
%K 
%K Aerodynamics
%K Small wind turbines
%K Wind-tunnel experiment
%U http://bulletin.incas.ro/files/dumitrescu__dumitrache__frunzulica__pal__turbatu__.pdf