A Simplified Approach On Dynamic Response

For many, the mention of wind energy conjures images of giant white turbines, their blades slowly rotating, stretching off into the distance with no end in sight. This is how it has been portrayed in pictures, but this is not how wind energy truly looks. Photographs in books and magazines imply that wind energy would require these never ending fields. On the contrary, smaller fields where a limited amount of turbines create all the power needed and more for a city that is nearby, or smaller individual turbines creating enough energy for a home or neighborhood without being obtrusive, is how wind energy truly looks. Wind energy harnesses the power of the wind and converts it to other forms of energy, one of the main known forms being electricity.

The process begins when the sun starts to heats up the surface which creates warm air. The warm, less heavy air rises and converges with the cold less heavy air above. This process is known as wind shears. Wind shears are when two

As stated in the last paragraph air pressure is made up of air molecules. But wind is made up almost completely different. Wind is the flow of air or other gases that make up the atmosphere. Wind is so strong that it can cause to make differrent landscapes or cause a tornado also known as a cycone. There are global winds, such as the wind belts which are between the atmospheric circulation cells. There winds which typically include certain type of cells in the air that are called jet streams. Gusts are short-lived increases in the strength of the

When air undergoes a deflection from it’s path, and it is a result of earth’s rotation.

AWEA. "Wind 101: The Basics of Wind Energy." American Wind Energy Association. AWEA, Jan. 1996. Web. 11 Feb. 2015.http://www.awea.org/ Resources /Content. aspx ?ItemNumber=900.

Throughout this investigation, data collection and statistical analysis will be performed to determine the validity of the following claim; “for driving a car, quick reactions are the most important factor. Males will be better drivers than females because they have faster reaction times” (Michael, 2014). In terms of driving, the time it takes for an individual to react to stimulus will have a major impact on the outcome of the situation. In an emergency, a driver may be required to rapidly slam on the breaks or turn the steering wheel, however it the individuals reaction time is slower than average, the likelihood of a collision is much greater. For instance, when an individual with a

The wind is described as a “violent assault” on anyone who is still on the streets. “It did everything it could to discourage the people walking on the street.” When the wind came alive it blew dust up and it got into people’s eyes and made it difficult for them to breathe. It would also blow newspaper around and would wrap around people's feet so they would have to stop and pick it up. The wind was acting like an annoyance and would pester the people to show them that the wind was in charge of the city. “It would even take the time to rush into doorways and areaways,” it was trying to affect everyone.

Transition: So to understand this natural phenomenon a little better, lets look at how hurricanes are formed.

Waves are formed by the energy of wind being transferred into the water. The energy of the wind makes the water go upwards. Then as

Weather is created by the movement of air masses of different temperature and moisture content moving around the Earth’s atmosphere and interacting with each other.

Often times when we experience a drastic change in weather, these changes occur from fronts. Both warm and cold fronts create sudden changes. These fronts are different air masses that separate at different densities. Zones are what separate the difference between warm and cold fronts. Often times between warm and cold front there are narrow lines and they`re typically shown by lines on a weather map. Usually, an air mass advance into the region occupied by another air mass. When two fronts collide this creates a midlatitude cyclone. Also, bringing much precipitation and severe weather to the area.

Although these problems were corrected and the idea of building a skyscraper became a feasible task, there were many conditions that had to be taken into account, that did not need consideration when building a structure less than 40 stories tall. Four story buildings are supported by their own walls; however a new method needed to be created for skyscrapers since the previous building method would not provide enough support. Metal skeletal frames made of columns and beams were then developed to provide the support and strength needed for the skyscrapers. As the buildings grew taller, their structural design was made lighter and stiffer. Also, as the buildings grew taller, wind became an important issue. Normally, the force that acts on the skyscraper pushes directly downward towards the ground that would then counter balance that push. However, when an additional force acts on it, such as wind, the forces would act differently on the skyscraper. With a lateral force acting on the building, the steel columns of the frame on the windy side would stretch apart slightly while the columns on the other side would compress. Therefore, the skeletal frame built had to be made so that the structure would be free to move slightly with the wind and, at the same time, remain sturdy.

Due to the design complexity of the Glasgow tower, construction could not start until a variety of wind tunnel test were completed. Mean hourly wind speeds along the river basin were used to measure the aerodynamic effects of the tower. Computational fluid dynamics programming was used to test the final design of the tower components. The project management team also did a good job in selecting the contractors from a pool over 70 international companies; the

When air is blown over an aerofoil, it separates into two distinct sets of streamlines above and below it separated by a dividing streamline. The shape of the aerofoil

Journal: R Billinton, D Huang, 2010, ‘Wind power modelling and the determination of capacity credit in an electric power system’, Proceedings of the Instituition of Mechanical Engineers, Part O: Journal of Risk and Reliability, pp. 1-9, viewed on September 12, 2011, retrieved from: http://pio.sagepub.com/content/224/1/1