A comparative analysis of seven commonly-used eddy-viscosity turbulence models for CFD
simulations of VAWTs is presented. The models include one-to four-equations, namely the …

The current study systematically analyzes the impact of solidity (σ) and number of blades (n)
on the aerodynamic performance of 2-, 3-and 4-bladed Darrieus H-type vertical axis wind …

Vertical axis wind turbines (VAWTs) have received growing interest for off-shore application
and in the urban environments mainly due to their omni-directional capability, scalability …

Abstract The Scale-Adaptive Simulation (SAS) approach has emerged as an improved
unsteady Reynolds-Averaged Navier-Stokes (URANS) formulation to bridge the gap …

Vertical axis wind turbines (VAWTs) suffer from a poor power performance at low tip speed
ratios, where their blade aerodynamics are dominated by unsteady separation and dynamic …

The central shaft is an inseparable part of a vertical axis wind turbine (VAWT). For small
turbines such as those typically used in urban environments, the shaft could operate in the …

Dynamic stall is the main reason for the low power efficiency of vertical axis wind turbines
(VAWTs) at low tip speed ratios, where the utilizable wind kinetic energy is also high …

The performance of a vertical axis wind turbine (VAWT) deteriorates at low tip speed ratios
(TSR) and it is mainly characterized by flow separation and dynamic stall. Several mitigating …

The momentum recovery downstream of a Vertical Axis Wind Turbine (VAWT) is analyzed as
a function of its dynamic solidity, modified changing both the number of blades and the …

Darrieus type vertical axis wind turbines have several advantages over other wind turbines
for local electricity generation in urban environments. However, the main aerodynamic …