If hydrokinetic turbines are to make a significant contribution to small scale off-grid power
supply, they will need to be affordable, reliable and easily deployed at many sites, not just a …

Omnidirectionality and simple design make VAWTs more attractive compared to HAWTs in
highly turbulent and harsh operational environments including low wind speed conditions …

Blade pitch control is a well-developed and widely-used approach in modern horizontal axis
wind turbines in operation. However, its application in vertical axis wind turbines (VAWTs) is …

Recent studies have revealed that passive leading-edge slots on the pressure side has the
potential to increase both the peak and overall CL/CD of airfoils and may possess an …

Despite a lot of optimism about the potential of hydrokinetic turbines in rivers, the reality is
that very few are currently deployed in rivers, delivering power to those who need it. Barriers …

In this paper, numerical simulations are conducted to compare the performances of a fixed-
blade vertical-axis turbine (VAT), and a variable pitch VAT whose blades are forced to do …

Vertical axis turbines, also called Darrieus turbines, present interesting characteristics for
offshore wind and tidal applications but suffer from vibrations and a lower efficiency than the …

Vertical-axis wind turbines (VAWTs), which are considered an important wind energy
conversion device, have recently received renewed attention. Researchers are investigating …

In recent decades, the high fatigue loads (mainly derived from the blade normal force
fluctuation) and low power coefficient at the low tip speed ratio with high incoming wind …

Vertical-axis water turbines (VAWT), the target of the present study, provide a higher area-
based power density when used in arrays, and are a promising alternative to horizontal-axis …