Question

Question #da407

Answer 1

Doubling the velocity of wind has the potential of producing power effects that are eight times, or `2^3` times the original force.

Explanation:

When the velocity of the wind increases, the power of the wind and its force on the land mass and objects in it path increase at an exponential rate. This means the force jumps up much more rapidly that the increase in the wind velocity.

For example, if the wind were to blow with a concentrated force strong enough to push a car along a road, doubling that wind velocity would result in a force strong enough to push `2^3`or eight cars along the road. This increase in power will be devastating when applied to destruction of homes and property.

Higher wind velocity is also not always useful in the generation of power from wind turbines. This is because wind turbines have been designed to generate power when spinning at a certain range of rate of circular motion. If the wind force becomes too high, the turbine must be braked to a stop to protect it from damage.

There is more information here:
http://www.theweatherprediction.com/habyhints2/479/

And a graph here:
http://drømstørre.dk/wp-content/wind/miller/windpower%20web/en/tour/wres/enrspeed.htm