The blades of a vertical axis wind turbine (VAWT) rotor see an inconsistent angle of attack through its rotation. Consequently, VAWT blades generally use symmetrical aerofoils with a lower lift-to-drag ratio than cambered aerofoils tailored to maximise horizontal axis wind turbine rotor...

Rotating stall around a small-scale horizontal axis wind turbine was experimentally studied to characterize and assess smart rotor control by plasma actuators. Phase-locked Particle Image Velocimetry was used to map the flow over the rotor blade suction surface at numerous radial stations at a...

The flow in turbomachinery is inherently unsteady, and the understanding of the flow interaction in the casing endwall region of shrouded turbine stages is a key requirement in achieving further improvements in performances. Thus, comparative numerical investigations of casing endwall flow...

In this paper a perturbation approach to the minimization of hydrogen consumption in polymer electrolyte membrane fuel cell systems is introduced. The control technique is mainly based on the minimization of the current produced by the fuel cell by means of the Perturb and Observe method. The...