Aerovortex mill

Abstract

The VIASAD/JETIASAD mechanism generates vortices/high speed jet streams in the vicinity behind the rotating wind mill rotor blades, in order to induce acceleration of the air hitting the wind mill rotor blades. The new idea here is the concept of using vortices or high-speed jet streams in order to create suction behind the wind mill rotor blades and eventually increase the speed of the incoming air flow. The consequences of this concept related to the way a wind mill functions, are the following: (1) It lowers the wind mill's cut-in wind speed, which means that the wind mill starts producing power at lower wind speeds. (2) Increase the wind mill power output for a given wind speed, and thus increase its efficiency. The VIASAD/JETIASAD mechanism renders the use of wind mills for generating electricity, economically viable and technically feasible in areas with low mean annual wind speeds.

1 . A mechanism or device which makes use of the wind and generates a single high-speed air jet stream or a pattern of multiple high speed air jet streams, of ANY TYPE or configuration, in the vicinity and space behind the rotating wind mill rotor blades. The generated high-speed air jet streams induce a suction effect which affects the wind hitting the rotor blades: The speed of the wind in the vicinity of the rotating rotor blades increases, and as a result it considerably improves the power output of the wind mill. 
 I call this device JETIASAD which stands for jet stream induced air speed amplification device:    The high speed jet streams mentioned above can be generated in ANY WAY and by no means is limited to the methods described below:    Intake nozzles facing the wind, direct the incoming flow through converging ducts or tunnels. The air as it goes through the contraction is accelerated and eventually it is released (expelled) via an exhaust nozzle. For the airflow to be accelerated, the intake area (A 1 ) of the duct is a lot larger than the exhaust area (A 2 ). The larger the ratio of the intake area to the exhaust area (A 1 /A 2 ) the greater it will be the acceleration of the air flow that goes through it.    
     
     
         2 . A mechanism or device which makes use of the wind and generates a system or pattern of air vortices, of ANY TYPE or configuration, in the vicinity and space behind the rotating wind mill rotor blades. The generated air vortices induce a suction effect which affects the wind hitting the rotor blades: The speed of the wind in the vicinity of the rotating rotor blades increases, and as a result it considerably improves the power output of the wind mill. 
 I call this device VIASAD which stands for Vortex Induced Air Speed Amplification Device.    The vortices mentioned above can be generated in ANY WAY and by no means are limited to the methods described below:    (i) Intake nozzles facing the wind, direct the incoming flow through converging ducts or tunnels. The air as it goes through the contraction is accelerated and eventually it is released (expelled) via an outgoing or exhaust nozzle. The intake area (A 1 ) of the contraction duct is a lot larger than the exhaust area (A 2 ). The larger the ratio of the intake area to the exhaust area (A 1 /A 2 ) the greater it will be the acceleration of the air flow that goes through it.    The air as it flows through the converging ducts, is guided past vortex generators.    These vortex generators can take the form, but are not limited to, fences or walls or grooves and extrusions or lifting bodies placed at different angles of attack to the air flow. They are located inside the converging duct, but they can also extend outside from both the inlet and outlet of the duct.    The vortex generators can take any geometrical shape that maximizes the performance for their intended purpose. See  FIGS. 4-16 .    (ii) Swept forward wings facing the wind at an angle of attack, generate vortices at their base. The base of the wings is situated behind the wind mill rotor blades and their tip extends in the space besides and in front of the rotating wind mill rotor blades. See  FIGS. 17-18 .    Moving surfaces or flaps control the direction of flow of the generated air vortices, and also they accelerate the flow by hitting the vortices and hence restricting their path.    Casing or walls can be constructed to enclose the space behind the wind mill rotor blades, so that only incoming air flow from the front of the wind mill rotor blades is being sucked in.