car hydrodynamics has become an important subject, the scientific study of the interaction between a moving car with the surrounding air and its effect on vehicle performance. When it comes to cars, we all know that the ship will encounter resistance in the water with the water, the aircraft encountered air resistance when flying in the sky, the car is no exception, that is, by air resistance, but also by ground friction. Regardless of the vehicle, in fact, their shape is not casually formed. Where the aerodynamic applications is essential.
So what is aerodynamically it? Is defined academic analysis dropwise, aerodynamics, is a branch of fluid mechanics, the main object moving in air or other gases sometimes produce various forces. Various forces simply, is to produce an object in motion in contact with the air, some force may be ldquo; good force rdquo ;, but some forces may impede the movement of the object. And these forces, which is what we always say air resistance; ldquo; good force rdquo; in the car say the most important is generated by air downward ldquo; rdquo ;, pressure to make the car more stable, the braking distance is shorter.
Do not underestimate the aerodynamics, whether in the field or in the civilian car racing, aerodynamic design to reduce drag, improve the speed, save fuel and reduce noise and enhanced driving stability and other aspects are very important.
When it comes to the application of aerodynamics, surely we are most familiar with is the car’s rear wing it, then we from the back to see what it has aerodynamic package on the car.
1, tail
The most common piece aerodynamic rear of the vehicle is the rear wing, and for civilian car, the rear wing more just play a decorative role. At present, the tail is also divided into fixed and two kinds of telescopically adjustable angle. A first fixed wing, is under pressure to a rear of the car, while the air disturbance, so that the air flows upward away directly after passing through the roof. And a second telescopically adjustable angle electric tail, such as Bugatti models, when perfectly vertical tail, can help shorten the braking distance. After
2, the rear bumper
Bumper main role is to protect the pedestrian and the vehicle body, some will rear bumper on both sides of the vent, its aerodynamic effect is to quickly exhaust the turbulence of air flow within the rear wheel arches.
3, rear diffuser
The working principle is to add a member to the upturned rear spoiler , rapid gas stream withdrawn underbody, the greater the gas flow rate, the lower the pressure, the bottom of the vehicle will form a low pressure region, the roof part is a high pressure zone, so that the body is formed a downward force, then a pressure will be generated .
4, side skirt
is a part of the vehicle body side skirts spoiler kit, appearance is followed. Reducing the effect of the reverse flow is generated in the vehicle is traveling, downforce, if the chassis ground as sorbent at high speed, a large increase in the degree of handling stability, to cooperate with the front and rear spoilers skirt.
5, the fender
fender ventilation device typically located behind the front wheel arches, the main role is to make planarizing the body and reduce drag, reducing fuel consumption.
6, the front bumper
The following spoiler front bumper is generally to reduce the flow rate of the gas stream and underbody turbulence, so that the airflow can flow more quickly to the car.
car air resistance from the tire periphery with a percentage of 15, acting Air Curtain (air curtain) is to reduce the air resistance of the tire outside as much as possible. It is through a vent at the front fog rear air deflector image, after the tire when the air becomes soft, thereby reducing drag. Of course, this design may be made to enter the air braking system, the braking system to heat.
7. Cover
Some automobile hood openings can help intake and exhaust, the air drainage take away some of the heat of the engine, while the possible flow of gas through the intake grill up, thereby increasingUnder the pressure of the car, and more in this design, high-powered, high speed racing on.
Here, many people will think that the lower the drag coefficient will certainly be better, it is not a misunderstanding, that is what we need to correct. We know that different cars and airplanes, when the former is running on the ground, that is, to achieve the walk through the friction between the wheels and the ground. Thus in addition to the air resistance, there are two important indicators need to be considered, they are ldquo; lift rdquo; and ldquo; under pressure rdquo ;. Lift reaction force of gravity is the object, the object can be pulled up and suspended in the air in the air, the aircraft mainly rely on this principle. And under pressure and lift the contrary, the object is to try to force against the ground, especially common in racing. A pressure wheel and body can be made close to the ground, maintaining stability of the vehicle, but also increases the overall air resistance of the vehicle body part.