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

Inactive Publication Date: 2010-06-30
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the relatively mature research on these two aspects, there is little room for reducing the air resistance of the vehicle body. In recent years, there have not been ...

Method used

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  • Bionic non-smooth surface film with pneumatic drag reduction effect
  • Bionic non-smooth surface film with pneumatic drag reduction effect
  • Bionic non-smooth surface film with pneumatic drag reduction effect

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a bionic non-smooth surface film with pneumatic drag reduction effect, which is composed of a basal surface and non-smooth units distributed on the basal surface evenly, wherein the non-smooth units are projections, recesses, L-shaped grooves or V-shaped channels; attaching the bionic non-smooth surface film with pneumatic drag reduction effect to the surface of cars, passenger cars or high-speed trains can effectively lower the coefficient of air drag of vehicle body.

Description

technical field [0001] The invention relates to a film for reducing the aerodynamic resistance of a product, in particular to a bionic non-smooth surface film with aerodynamic drag reduction effect which can be applied to the aerodynamic drag reduction of automobiles, passenger cars and trackless / rail vehicles. Background technique [0002] The rapid growth of automobile consumption has led to an accelerated increase in energy consumption, and the energy problem has become more and more serious. According to relevant data, it is estimated that the fuel consumption of motor vehicles in my country will account for about 43% of the total fuel consumption in the country in 2010, and automobiles will become the main factor for the increase in oil consumption. When the vehicle speed exceeds 60km / h, the power and fuel consumption used to overcome air resistance account for 30%-40% of the total driving power and fuel consumption. Energy is closely related to drag reduction, and drag ...

Claims

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Application Information

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IPC IPC(8): B62D37/02
Inventor 王耘张国耕邹银超王强谌可宋小文胡树根张伟谦竺春迪
Owner ZHEJIANG UNIV
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