Nowadays renewable energy sources play an important role in partially meeting the global
energy demand and protecting the environment. Wind energy technology among the …

Adding an exit diffuser is known to allow wind turbines to exceed the classical Betz–
Joukowsky limit for a bare turbine. It is not clear, however, if there is a limit for diffuser …

The manuscript investigates aerodynamic performance of an airborne wind turbine with
varying shell configurations in an effort to elaborate the influence of shell aerodynamics on …

A diffuser surrounding a rotor is able to increase the power coefficient of a wind turbine
above the Betz-Joukowsky limit (16/27), and so has attracted great attention for many years …

This study investigates power coefficients for ducted wind turbines to determine an absolute
maximum value corresponding to a maximum ideal power output. A maximum power …

Horizontal axis turbines are commonly used for harnessing renewable hydrokinetic energy,
contained in marine and river currents. In order to encourage the expansion of electricity …

It is known surrounding a turbine with a diffuser may significantly increase its power. This
effect has attained considerable attention as it shows theoretically the possibility of …

Diffuser technology placed around hydrokinetic rotors may improve the conversion of the
fluid's kinetic energy into shaft power. However, rotor blades are susceptible to the …

The paper presents the effect of fluctuating yaw angle and wind speed on the performance
of a horizontal axis airborne wind turbine of three different shell shapes for the high altitude …

Over the years most studies on wake characteristics have been devoted to wind turbines,
while few works are related to hydrokinetic turbines. Among studies applied to rivers, depth …