What is the function of automobile wind tunnel?

Automobile wind tunnel can simulate air resistance, noise, thermodynamic state, weather environment and even solar radiation encountered in various driving environments, so as to test the safety and handling stability of the prototype, which is an indispensable link in the process of automobile shape design and automobile thermal management development.

Automobile wind tunnel includes model wind tunnel, real vehicle wind tunnel and climate wind tunnel. The model wind tunnel is much smaller than the real vehicle wind tunnel, and the investment and use cost are relatively small. The model wind tunnel can only test the scale model, and its testing accuracy is relatively low. The actual wind tunnel is very large, and the construction cost and operation cost are extremely high. At present, there are not many real wind tunnels in the world, mainly concentrated in large automobile companies in Japan, the United States, Germany, France, Italy and other countries.

Wind tunnel is a kind of pipeline experimental equipment which simulates the airflow around an aircraft or an object by artificially generating and controlling airflow, measures the influence of airflow on the object, and observes physical phenomena. It is the most commonly used and effective tool in aerodynamic experiments. Wind tunnel is mainly composed of tunnel body, driving system and measurement and control system, and the forms of each part vary with the type of wind tunnel.

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