System for reducing air friction resistance on surfaces of train by blowing air to interfere in air flow

Abstract

The invention provides a system for reducing air friction resistance on surfaces of a train by blowing air to interfere in air flow. The system comprises a plurality of convex-peak-shaped air blowingunits longitudinally arranged on wall surfaces of a gangway bellows of the train. The air blowing directions of the air blowing units are opposite to the direction in which the train runs, and the airblowing directions of all the air blowing units are the same; each of the air blowing units comprises two air blowing openings which are both positioned on inclined surfaces of the corresponding convex peak shape and which form a certain included angle with the plane of the corresponding outer surface of the train; one of the two air blowing openings is in the reverse direction to the direction in which the train runs so as to achieve air blowing and sealing, and the other air blowing opening is in the same direction as the direction in which the train runs so as to achieve sealing; inside the train, the air blowing units comprise first systems, second systems and supporting and rotating mechanisms; the first systems and the second systems are separately clamped, supported and rotated through the supporting and rotating mechanisms; the first systems comprise air blowing devices and compression devices so as to separately achieve air blowing and compression sealing; and the second systems comprise compression devices so as to achieve compression sealing.

Description

Technical field [0001] The invention belongs to the technical field of air friction resistance of high-speed trains, and in particular relates to a system that interferes with air flow in a blowing manner to reduce the air friction resistance of the train surface. Background technique [0002] High-speed trains provide great convenience for people's travel. According to the technological development trend of high-speed trains, higher speed trains are now being studied. Such as figure 1 with figure 2 As shown, when the train is running at high speed, the interaction between the air and the surface of the car body produces a boundary layer of the air close to the surface of the car body, which is also the source of high-speed frictional resistance on the surface. That is, as the speed increases, the interaction between the surface of the car body and the air gradually strengthens, and the air resistance continues to increase. In order to reduce the friction between the surface of...

AI Technical Summary

Problems solved by technology

If also punch straight holes, punch a straight hole or punch a row of straight holes, set the position of punching just at the windshield position of the train, this straight hole will also have such shortcoming, when not needing to blow air, this straight hole becomes a source of resistance

There is no way to close the straight hole, and there is no facility with the sealing function

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