Wind turbine design

Q) What are four Aerodynamic design issues?

Ans)

• Flow unsteady most of time.
• Combined effects of wind shear.
• Atmospheric turbulence and gusts.
• Yaw misalignment and tower shadow.

Q) Is two dimensional airfoil data suitable for predicting the aerodynamic performance on stall regulated turbines ?

Ans) NO. Above are pics of 2D wind tunnel data.

Q) How do we achieve aerodynamic ( for peak power o/p) control?

Ans)

Stalling of blades:- blades are not accelerated but moved at const. velocity.

Pitch adjustment:- to allow for best in-flow angles.