Bionic non-smooth surface film with pneumatic drag reduction effect
A non-smooth surface, non-smooth technology, applied in the direction of body, body stability, transportation and packaging, etc., can solve the problem of small air resistance of the body, and achieve the effect of reducing the air resistance coefficient
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Embodiment 1
[0035] refer to Figure 7 , a non-smooth drag-reducing film mainly covering the roof of the vehicle body, the surface of the film is evenly distributed with pit-shaped non-smooth units u, the unit diameter d is 1.5mm, the unit depth h is 0.75mm, and the unit u The horizontal spacing s is 9.0mm, the vertical spacing l is 9.0mm, and it is pasted on an area of 1.2m 2 The drag coefficient of the car on the roof of the car body can be reduced by about 5.6%.
Embodiment 2
[0037] refer to Figure 8 , a non-smooth drag-reducing film mainly covering the roof of the vehicle body, the surface of the film is evenly distributed with groove-shaped non-smooth units u, the stripe width s is 1.0mm, the stripe height h is 1.0mm, and the stripe unit spacing d is 12mm, stick it on an area of 1.2m 2 The drag coefficient of the car on the roof of the car body can be reduced by about 8.20%.
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