Diffuser augmented run the river and tidal picohydropower generation system

At our current state of technological development, the designs being proposed for the "channeling of a turbine" based on wind power, commonly called DAWT (Diffuser-Augmented) or CWAT (Compact-Acceleration), utilize a diffuser (divergent) shaped as an airfoil. Further developments of the concept have brought about the introduction of other wingedprofiled ring structures behind or in front of the entrance to the divergent making the design more complicated as well as more expensive due to the difficulty of producing correct contours. Even though this results in an increase in power, it usually is limited to slightly more than a four-fold increase at most. In addition, brims (wing-lens) have been recently added around the external edges of the diffuser. Nonetheless, brims thus designed, are not suitable for use in a river due to the significant stress that the structure as a whole needs to withstand. No design, proposed until now, includes a convergent at the entrance to a turbine due to the obstruction effect that it has on the flow of water into the turbine, slowing it down and thereby reducing the acceleration produced by the "channelizing" divergent. This article will introduce an innovative convergent-divergent to which can be inserted a hydro-kinetic turbine which will increase the maximum output power available 12.7 times compared with a free turbine.