On the question of wind resistance, the causes of the formation of wind resistance

Wind resistance in this question is only related to two relationships, velocity and area, and for area is on the perpendicular plane of the direction of movement of the wind. It can also be said that the area of the front of the person, the speed is the same, the area is large, the resistance is large, the overall oh mentioned here, if it is only related to speed at one point.

It is still necessary to consider the appearance.

The main close can be understood as follows: compared with the cuboid with the same cross-sectional area and the sphere, the wind resistance of the sphere is smaller, and the same is true for the reason why the car is streamlined.

From a professional point of view, it is necessary to understand the concept of drag coefficient, which is as follows:

Wind resistance coefficient: Air resistance is the largest and most important external force encountered by a car when driving. The air resistance coefficient, also known as the drag coefficient, is an important factor in calculating the air resistance of a car.

It is a mathematical parameter determined by wind tunnel experiments and glide experiments, which can be used to calculate the air resistance of the car while driving. The magnitude of the drag coefficient depends on the shape of the car. The greater the drag coefficient, the greater the air resistance.

The drag coefficient of modern cars is generally in between.

Common wind resistances are as follows:

The drag coefficient of the vertical plane body is approximate.

The drag coefficient of the sphere is approximate.

The drag coefficient of a general car.

A number of sports cars are in.

Racing can be reached.

Birds reach in airplanes.

Raindrops currently have the smallest drag coefficient.

In the left and right.

The shape will affect the drag coefficient of the short and fat comparatively.

What is the wind resistance, what is the wind resistance coefficient, and what is the impact on the power output.

Very tangled question! Very fucking up question!

The drag coefficient of the vertical plane body is about to slip.

The drag coefficient of the sphere is approximate.

A sleepy macro car wind resistance letter size factor.

A number of sports cars are in.

Racing can be reached.

Birds reach in airplanes.

At present, the drag coefficient of raindrops is at least around the limit.

Millions of car purchase subsidies.

Wind resistance is the resistance from the air when the vehicle is driving, and there are generally three forms of air resistance, the first is the resistance and mountain generated by the air flow hitting the front of the vehicle, just like taking a wooden board against the wind, and the resistance is almost all the resistance caused by the air flow impact. The second is frictional resistance, which generates the same frictional force as air passing through the body, but at the fastest speed that a typical vehicle can travel, the frictional resistance is almost negligible. The third is the external resistance, generally speaking, when the vehicle is driving at high speed, the external resistance is the most important air resistance**.

The resistance caused by the appearance comes from the vacuum area behind the car, and the larger the vacuum area, the greater the resistance. Generally speaking, a sedan will have less external resistance than a hatchback SUV.

Millions of car purchase subsidies.

The causes of differential pressure resistance and drag reduction measures are as follows:

1. Although the separation of airflow is not the source of pressure difference resistance, it directly causes the generation of pressure difference. If the airflow separates later on the fuselage, the slower the airflow after separation, the higher the pressure at the rear end of the fuselage, and the smaller the pressure difference. Therefore, pushing back the airflow separation can reduce the differential pressure resistance.

2. You should know that when the air flow through objects of different shapes, the separation is different: the air flow begins to separate after passing through the edge of the flat plate perpendicular to the air flow, and the differential pressure resistance is very large, and the separation of the air flow through the sphere is later than that of the flat plate, and the differential pressure resistance is also smaller than that of the flat plate; The air flow separates very late when it passes through the streamlined object, and the differential pressure resistance is minimal.

3. The differential pressure resistance has a lot to do with the windward area and shape of the object and the relative trace macroposition of the object in the airflow. The larger the windward area, the greater the differential pressure resistance. Like a water droplet, the front end is blunt, and the back is a thin streamlined object, with the least pressure differential resistance.

The greater the angle of the object relative to the airflow, the greater the differential pressure resistance.

Differential Pressure Resistance:

Differential pressure resistance, referred to as piezoresistive, is the resistance caused by the pressure of the object surface. The differential pressure resistance has a lot to do with the windward area, shape, and position of the object in the air flow.

The area where an object is cut open with a knife and is facing the windward air is called the "windward area" of Cheongju Demolition. If this area is cut from the thickest part of the object, this is the maximum windward area. It is not difficult to prove from experience and experiments:

The larger the maximum windward area of an object of the same shape, the greater the differential pressure resistance.

Summary. Hello dear, glad to answer for you. Wind resistance affects the temperature, and the wind resistance increases as the temperature decreases.

Hello dear, glad to answer for you. Wind resistance affects the temperature, and the wind resistance increases as the temperature decreases.

At -7, the air density is 25 times that of the car, and the air resistance of the car becomes larger, and the wind resistance of the vehicle increases with the decrease of temperature. Wind resistance is the resistance from the air when the object moves, and it is the resistance generated by the air flow hitting the front of the vehicle, frictional resistance, and external resistance. The first is the drag caused by the air flow hitting the front of the vehicle, which is like taking a wooden plank against the wind, and the resistance is almost all the resistance caused by the air flow.

The second is the friction resistance before the collision and rubbing, the air will produce the same friction as it passes through the body, but the friction resistance is almost negligible at the fastest speed that the average vehicle can drive. The third is the external resistance (the regret shown in the "Wind Resistance" on the right can explain what the external resistance is).

Riding an electric car in winter is fast, will the wind resistance make the temperature lower?

Dear, riding an electric car in winter is fast, and the wind resistance will reduce the temperature.

Speeds of up to a few yards will lower the temperature.

Dear, getting up to 40 yards will lower the temperature.

Lower by a few degrees. Pro, it will be lowered by 5-10 degrees.

Wind resistance has a big impact on a car's performance. The smaller the drag coefficient, the smaller the air resistance effect, and vice versa, so the smaller the drag coefficient, the better. In general, the stronger the flow linearity, the smaller the drag coefficient.

The drag coefficient is a mathematical parameter determined by wind tunnel experiments and gliding experiments and can be used to calculate the air-air resistance of a car while driving. The drag coefficient depends on the shape of the car. The greater the drag coefficient, the greater the air resistance. The drag coefficient of modern cars is generally in between.

Wind resistance is the resistance of the air from the vehicle when it is moving. Generally, there are three forms of air resistance. The first is the drag created by the airflow hitting the front of the vehicle, like holding a plank against the wind.

Almost all of the drag is the drag created by the impact of the air flow. The second is frictional resistance. Empty air creates friction as if it were passing through a car body.

However, the frictional resistance is so small that it is almost negligible at the fastest speed that a normal vehicle can travel. The third is external resistance. In general, when the vehicle is driving at high speeds, the external resistance is the most important air resistance**.

The drag caused by the shape comes from the real empty area behind the car. The larger the real empty area, the greater the resistance. Generally speaking, sedan-type motorhomes have less external resistance than station wagons.

Millions of car purchase subsidies.