Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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: 2011-11-09
ZHEJIANG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 many reports on the new technology of aerodynamic drag reduction of the vehicle body, which makes the development of the air drag reduction of the vehicle body enter a bottleneck period.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products