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Sep12-08, 02:11 PM
Topher925's Avatar
P: 1,672
Turbines / conservation of energy

In the case of a wind turbine, you can think of the flow following the bath of a diffuser. As the air passes through the wind turbine disc it slows down and expands out word because of its slower velocity. This is analogous to the down wash of a helicopter which the flow becomes more narrow do to an increase in velocity. The kinetic power extraction limit of a wind turbine is modeled using the Betz Law.