An experimental campaign of measurements for a Darrieus vertical-axis wind turbine (VAWT) is presented for open field conditions. The turbine is characterized by a twisted bladed design, each blade being placed at a fixed distance from the rotational shaft. The experimental setup to perform the acquisitions is described. The results are lower than expected, due to the high influence of the wind...

Wind energy is one of the most important renewable energies since it reduces environmental pollution. Darrieus VAWTs with straight-bladed are more prevalent in small-scale power generation due to their simple blade design and easy construction. The investigation performance a topic that fascinating for Researchers look into. have paid special attention Double Multiple Stream Tube (DMST) model V...

This article presents an analysis of the complex and unsteady flow a ssociated with functioning rotor vertical axis wind turbine Darrieus - H. In this study, influence different numerical aspects on accuracy simulation around three straight blades in rotation is performed, which are effect turbulence modeling, effects mesh time step. The Delayed Detached Eddy Simulation (DDES) approach used. ai...

A numerical procedure was developed to determine a variable-pitch law that maximized the performance of vertical-axis wind turbine (VAWT). The methodology based on determination, for each blade, angle attack maximizing stationary aerodynamic efficiency at prescribed azimuthal positions. angles were determined by means panel method with low computational effort, and implemented in Matlab® softwa...

Planar flames are intrinsically unstable in open domains due to the thermal expansion across the burning front—the Landau-Darrieus instability. This instability leads to wrinkling and growth of the flame surface, and corresponding acceleration of the flame, until it is stabilized by cusp formation. We look at the Landau-Darrieus instability for C/O thermonuclear flames at conditions relevant to...

We developed a computational model based on a finite-element mixed formulation with quadratic isoparametric beam elements. We applied this model to the analysis of a blade-wagon: a novel structure characteristic of an innovative concept in wind-power called VGOT Darrieus turbine. We studied the structural behaviour of its main components: chassis, suspension and blade, using combinations of bea...