Device for reducing frictional resistance and method for reducing viscous frictional resistance of fluid by means of device

A technology of frictional resistance and viscous friction, applied in the direction of fluid flow, mechanical equipment, etc., can solve problems such as insufficient lubrication effect, weakened friction force, poor durability, etc., and achieve simple methods, reduce viscous resistance and high durability Effect

Active Publication Date: 2018-06-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to weaken the friction between solids, lubricants can be used, but there are still defects such as insufficient lubrication, easy wear and poor durability.

Method used

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  • Device for reducing frictional resistance and method for reducing viscous frictional resistance of fluid by means of device
  • Device for reducing frictional resistance and method for reducing viscous frictional resistance of fluid by means of device
  • Device for reducing frictional resistance and method for reducing viscous frictional resistance of fluid by means of device

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Embodiment Construction

[0028] A device that reduces the viscous frictional resistance of a moving object in a fluid, such as figure 1 As shown, it includes a rolling body and a rolling skin, and the rolling body is inlaid on the surface of the rolling skin.

[0029] Concrete device and method are as follows:

[0030] In the device and method of the present invention, rolling skin such as figure 1 As shown, it includes a rolling skin base 101 and balls 102, and the balls are distributed in an array on the skin surface.

[0031] The structure of the ball on the skin is as follows figure 2 As shown, the ball 202 is fixed on the skin base 201 by the rotating shaft 203 . The axis of rotation of the ball is parallel to the surface of the skin and perpendicular to the direction of relative motion of the fluid.

[0032] The rolling skin is covered on the surface of the object that has relative motion with the fluid in the fluid. When there is relative motion, driven by the fluid, the ball rotates and t...

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Abstract

The invention discloses a device for reducing frictional resistance and a method for reducing viscous frictional resistance of fluid by means of the device. The device comprises rolling bodies and a rolling skin, and the rolling bodies are inlaid into the surface of the rolling skin. The method comprises the step that the surface of a moving object is covered with the rolling skin which is provided with the rolling bodies in an inlaid mode on the relative movement interface of the moving object and the fluid. Compared with the prior art, the device and the method have the advantages that the relative movement surface of the moving object and the fluid is covered with a layer of the rolling skin, relative movement of the fluid drives balls or rollers on the surface of the skin to rotate, therefore, the relative movement speed between the fluid and the object surface is decreased, and the viscous resistance of the fluid is decreased. The method is suitable for the surfaces of objects onwhich the fluid and a solid relatively move, such as the surfaces of all objects moving in the fluid or the inner surfaces of pipelines in which the fluid moves and has the wide application prospect in the fields of high-speed transportation and transportation.

Description

technical field [0001] The invention relates to a device and a method for reducing fluid viscous frictional resistance, in particular to a device for reducing frictional resistance and a method for reducing fluid viscous frictional resistance using the same. Background technique [0002] Objects moving in the fluid include airplanes and rockets moving in the air, submarines and ships moving in the water, high-speed rails and cars moving on the road, and even pipes moving in the fluid. Air, water, oil, natural gas, etc. are all fluids with viscous resistance. In order to reduce resistance, one is to continuously design the shape and structure from the perspective of fluid dynamics, such as designing a streamlined shape, making the contact surface smoother, and creating a boundary layer, such as an air cushion. [0003] If fluids and non-fluids are regarded as the same, it is just that the force between internal molecules is different. In order to weaken the friction between...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15D1/00
CPCF15D1/003F15D1/006
Inventor 田祥瑞吴旭琴
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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