Aerodynamics

cars

By: Nur Syahirah Isa Maziyatulkarimah Masrur

Objectives:

• Introduction of aerodynamic of car and the principle related.

• How is the aerodynamic devices works?

• Is it the aerodynamic devices helps to reduce the uses of fuel?

Aerodynamics is the study of moving air or wind over a body in motion, & how that airflow will affect the body's movement through the flow.

car aerodynamics make the car more safer and make it more fuel efficient.

Bernoulli’s principle It stated that, as the speed of velocity

increases, its pressure decreases

What is the down force.

• The term down force the downward pressure created by the aerodynamic characteristics of a car that allows it to travel faster through a corner by holding the car to the track or road surface. However it also inverses friction between the tires and the road surface, thus decreasing maximum velocity.

• It’s a force which arises due to the airflow over and below the car, which act vertically downward on the car.

COEFFICIENT OF DRAG• Ability to cut through the air

and the shape of the car which ultimately affect the overall top speed

• The lower the Cd level, the lower the drag, more aerodynamic efficiency of the car design

Here are things that can be done to reduce your vehicle's drag (air resistance)

1. Make the shape of the car so that air flow together smoothly towards the end of the car

2.Reduce the frontal area of the car by minimizing the grill making sure that windscreen is as flat as possible.

3.Cover the wheels.

Cars can generate lift if designed poorly.

Roof ScoopsRoof Scoops

Creates a high pressure area that “pushes” down the carGive stability to the car during driving on the high speed

FRONT AIR DAM

• Limits the Amount of Air Passing Underneath the Car• Contributes to High Pressure In Front of the Car• Causes Low Pressure Underneath the Car

10

UNDER TRAYS

• To minimize the wind resistance or drag• To reduce the drag greatly by creating a smooth boxed in

under tray• Helps to keep the fuel or gas bill down as well as provide a

better top speed

The aerodynamic of cars was related to Bernoulli’s principle.

Overall the use of the aerodynamic devices greatly increases the performance of a car. The trick is to be able generate just the right amount of down force while keeping drag to a minimum.

By having the aerodynamic devices, cars can be more spacious, fuel efficient and safer

CONCLUSION

Thank you