371x Filetype PPTX File size 2.85 MB Source: tfaws.nasa.gov
Outline
• Introduction
• Objective
• Numerical Setup
• Results
• Conclusions
Wind Energy
• The conversion of wind energy into various other useful forms such as electricity is
known as wind power
• Studying wind energy is desirable because:
– Wind energy is renewable
– There is ample supply of wind energy
– Suitable wind patterns are available worldwide
– Production costs of wind energy are declining
– Wind energy produces minimal greenhouse gas emissions
Wind Turbines
Horizontal Axis Wind Vertical Axis Wind
Turbines (HAWT) Turbines (VAWT)
Advantages Advantages
• Higher efficiency • Ground mounting makes
• Can furl out of the wind to reduce maintenance easier
wind speed seen by the blades • Can be installed in areas of wind
• High towers reduce turbulence funnelling and high wind speeds
caused by nearby structures • Lower noise signature
• Disadvantages • Requires lower starting speeds
• Tower mounting makes maintenance • Disadvantages
more difficult • Lower efficiency
• Requires large structures
• May require guys to support
• Installation requires heavy equipment
• Requires additional controls to furl rotation axis
and rotate to orient blades in the wind • Can create an inconsistent torque
direction (pulse)
Wind Turbines
Wind Turbines
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