K. M. Foreman

TL;DR: In this paper, a wind powered electrical generating system having a suitable shaped aerodynamic duct or shroud within which a wind turbine having a fixed pitch blade is mounted, as by means of a stator means at the inlet of the duct, with the stator includes mechanism for varying their effective angle of attack with regard to the approaching wind so as to provide the desired swirling approach of the wind to the turbine there behind in achieving the desired torque and speed of shafting from the turbine to generator driven by the turbine in maintaining constant phase and frequency of the electrical output wherein the duct or

TL;DR: In this paper, the diffuser-augmented wind turbine (DAWT) was used to add real turbine characteristics such as swirl, and centerbodies effects, to the flow.

TL;DR: In this article, the authors investigated two diffuser-augmented wind turbine design concepts and found that the specific power costs for a realistic DAWT configuration are lower than conventional wind turbines for very large size rotors, above 50 m diameter, and for rotor diameters less than about 20 m.

TL;DR: The diffuser-augmented wind turbine (DAWT) is one of the advanced concepts being investigated to improve the economics of wind energy conversion systems (WECS). Application of modern boundary-layer control techniques has reduced the surface area requirements of an efficient diffuser by an order of magnitude as discussed by the authors.

TL;DR: In this article, a diffuser for augmenting a wind turbine having means for energizing the boundary layer at several locations along the diffuser walls is improved by the addition of a short collar extending radially outward from the outlet of diffuser.