Suction type wind power generation

Does boundary layer suction improve power coefficient of vertical wind turbine?

Boundary layer suction can effectively improve performance and power coefficient of vertical wind turbine. The power coefficient is greatly improved at low TSR. The optimal TSR of the VAWT equipped with blades having boundary layer suction control changes from 2.64 to 2.33.

What happens when a wind turbine is at 0°?

When the wind turbine is at position of 0° for blade 1, no obvious vortex separation occurs on the boundary layer suction blades. Relatively large vortex separation and shedding is onset on blade 2 and blade 3 of the wind turbine without suction.

How many trailing vortexes are there on a wind turbine blade?

For blades with boundary layer suction, still only two thin trailing vortexes occur on the blades. At position of 90°, with the increase of the relative angle of attack, a positive vortex K on the inner surface begins to develop on blade 1 for the wind turbine without suction.

What is the optimal aerodynamic efficiency of a wind turbine?

The optimal aerodynamic efficiency of 0.293 was presented at a turbine tip speed ratio of 2.19. Also, an experiment had been executed to get the generator and the controller efficiencies. The rated wind speed, to produce the maximum power of 500W, was found to be 12.73 m/s.

How much power does a turbine gain from suction at TSR?

The turbine net power gain due to the suction at TSR = 2.5, 3.0 and 3.5 is 219.6%, 74.3% and 19.6%, respectively. The study showed that the optimal suction location is insignificantly influenced by turbulent intensity and minimally influenced by TSR while more sensitive to Rec.

How much power does a wind turbine produce?

The selected model was scrutinized through CFD analysis in the range of wind velocity varying from 3.5 m/s to 12 m/s to estimate the power output. At a tip speed ratio of 1.5, the maximum power outputs were 1.38 W, 2.72 W, and 4.74 W at wind velocities of 8 m/s, 10 m/s, and 12 m/s respectively.