Abstract
The increase of frontal aerodynamic drag of the car, connected with the move of the air flow through the engine bay depends on various factors. Among them there’s an interference of inner and outer air flow, which leads to the alteration of pressure on the surface of the car body in the front part of the car. The nature of this phenomenon, associated with the move of the air flow through the engine bay, is connected with the increase of pressure around inlet openings and with the increase of rarefaction on the surface of the car body, situated at an angle to the oncoming airflow. As a result of investigations, it was found that the degree of influence internal air flow on aerodynamic drag depends on the design and shape of the car body, but mainly by the air consumption through the engine bay.
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