Despite the widespread research and development of HAWTs in recent times, VAWTs are gaining popularity due to certain critical advantages they provide, for example, wind direction independency. While most existing studies focused on analysing performance VAWT using NACA aerofoils, this study compares NACA0018 S1046 aerofoil profiles a range Speed Ratios (TSRs) blade pitch angles. It has been fo...

In order to develop a sustainable economy based on the efficient use of green energy resources, it is necessary research and innovate systems such as wind turbines. this paper, new configuration for vertical axis turbines was proposed numerically analyzed using CFD methods. The concept solving starting problem lift-based consists three blades with different chords, arranged at radii so that int...

Abstract. The behaviour of a rooftop-mounted generic H-rotor Darrieus vertical-axis wind turbine (H-VAWT) is investigated numerically in realistic urban terrain. interaction the atmospheric boundary layer with different buildings, topography, and vegetation present environment leads to highly turbulent-inflow conditions continuously changing inclination direction. Consequently, all these factor...

This study introduces a Vorticity Index (VI) and an Imminent Vortex Separation Condition (IVSC), which are considered valuable indicators to quantify the vorticity impact on vertical axis wind turbines (VAWTs) operation. The VI IVSC specifically applied H-Darrieus turbine (VAWT). Findings show that these two parameters display direct relationship with aerodynamic forces govern performance of th...