A considerable body of research is currently being performed to quantify available tidal
energy resources and to develop efficient devices with which to harness them. This work is …

The growing demand for clean, sustainable, and viable energy in the twenty-first century
prompted researchers to focus their efforts on developing renewable-based technologies. In …

Small Darrieus hydrokinetic turbines with fixed pitch blades typically suffer from poor starting
torque, low efficiency and shaking due to large fluctuations in both radial and tangential …

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 …

In this study, the CFD method is carried out in the wake region of an H-type Darrieus
hydrokinetic turbine. The hydrodynamic investigation was examined with symmetric and non …

Horizontal axis wind turbines have a number of limitations for offshore operations,
particularly in deep water (ie over 50 m). For example, scalability restrictions, the necessity …

A lift-driven vertical axis wind turbine (VAWT) generates peak power when it is rotating at
high tip-speed ratios (TSR), at which time the blades encounter angles of attack (AOA) over …

The Darrieus turbine is a suitable power generation in free stream flow because it is simple
in construction, but it has the disadvantage of its small starting torque. The Savonius turbine …

As the use of Darrieus turbines in water is becoming increasingly popular in the field of
renewable energy, it is essential to explore and evaluate existing research efforts. The …

The design of wind turbines requires a deep insight into their complex aerodynamics, such
as dynamic stall of a single airfoil and flow vortices. The calculation of the aerodynamic …