Author: C Simão FerreiraYear Published: 2014 Multi-megawatt Vertical Axis Wind Turbines (VAWTs) are experiencing an increased interest for floating off-shore applications. However, VAWT development is hindered by the lack of fast, accurate and validated simulation models. This work compares six different numerical models for VAWTS: a multiple streamtube model, a double-multiple streamtube model, the actuator…
Author: David MalcolmPublication: Sandia National LaboratoriesYear Published: 1988 This report describes a project intended to incorporate the effects of atmospheric turbulence into the structural .response of Darrieus rotor, vertical axis wind turbines. The basis of the technique is the generation of a suitable time series of wind velocities, which are passed through a double multiple…
Author: S Worasinchai, G Ingram and R DominyPublication: J. Power and EnergyYear Published: 2011 This article describes an experimental, aerodynamic investigation of four aerofoils intended for small wind turbine applications. The aerofoils of these small machines (both horizontal and vertical axes) normally experience conditions that are quite different from large-scale machines due to smaller chord…
Author: Mazharul Islam, Khaled Almohammadi, Yasir M. ShariffYear Published: 2009 The fixed-pitch straight-bladed vertical axis wind turbine (SB-VAWT) is one of the simplest types of wind turbine. The overall cost of the SB-VAWT will mainly depend on judicious choice of multiple design parameters. An attempt has been made in this paper to analyze the influence…