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A drag reducing device for surface underwater vehicle and preparation method thereof

An underwater vehicle and drag reduction device technology, applied in glass manufacturing equipment, manufacturing tools, glass molding and other directions, can solve the problems of low drag reduction efficiency, high maintenance cost, poor slow release effect of drag reducing agent, etc. The effect of high-efficiency coupling drag reduction effect

Inactive Publication Date: 2018-02-02
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of low drag reduction efficiency, high maintenance cost and poor slow-release effect of drag reducing agent in the prior art, the invention provides a drag reduction device for underwater vehicles device, the adopted technical scheme is as follows:

Method used

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  • A drag reducing device for surface underwater vehicle and preparation method thereof
  • A drag reducing device for surface underwater vehicle and preparation method thereof
  • A drag reducing device for surface underwater vehicle and preparation method thereof

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Experimental program
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Embodiment 1

[0039] This embodiment provides a method for preparing the drag reducing device of the present invention, the flow process of the method is as follows Figure 6 As shown, the specific steps are as follows:

[0040]Step 1: Obtaining the Microscopic Topography of Shark Skin

[0041] Electron microscopy was used to obtain the microscopic morphology of shark skin.

[0042] The second step: the establishment of 3D printing model

[0043] According to the microscopic structure obtained in the first step, a 3D printing model of the shark epidermis microstructure is constructed to prepare for 3D printing.

[0044] Step 3: 3D printing glass to make a high-fidelity shark drag-reducing microstructure main body

[0045] Using 3D printing technology and glass wire, a shark-like drag-reducing microstructure is produced, and a square structure with a side length of 10cm is produced. The drag-reducing agent channel layer and communicating holes 8 are made on the back of the shark-like drag...

Embodiment 2

[0059] This embodiment provides a method for preparing a drag reducing device, which differs from Embodiment 1 in that:

[0060] The technical parameters of femtosecond laser processing are: wavelength 800nm, power 100mW, processing speed 20μm / s.

[0061] The width of the I-stage channels 5 on the processed support layer 11 is 10 mm, the depth is 2 mm, and the number is 3 per square decimeter. The second level channel 6 has a width of 6mm and a depth of 2mm. 8 articles. The level III channel 7 has a width of 3 mm and a depth of 1.5 mm, and the number of communicating holes 8 is the same as that of the labyrinth flow channels 3 .

[0062] The single sawtooth structure of the labyrinth channel 3 is in the shape of an isosceles triangle with a base length of 0.4 mm, a height of 1.2 mm, and a thickness of 0.8 mm. The length of the labyrinth channel 3 is 10 mm, the width is 1.5 mm, the depth is 0.8 mm, the distance between adjacent saw teeth is 0.1 mm, and the number of saw teet...

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Abstract

The invention discloses a drag reduction device used for a water surface and underwater vehicle and a manufacturing method of the drag reduction device, and belongs to the technical field of ship manufacturing. The drag reduction device provided by the invention comprises a placoid layer, a supporting layer and a slow release layer, wherein the placoid layer and the supporting layer are arranged in parallel; the slow release layer is located between the placoid layer and the supporting layer; a channel layer is machined on the supporting layer; overflowing holes communicating with the slow release layer are formed in the surface of the placoid layer; the slow release layer communicates with the channel layer through communicating holes and comprises a plurality of sawtooth-shaped maze flow channels; the channel layer is composed of multi-stage channels with different widths, and the multi-stage channels are distributed dendritically; and the channel with the smallest width communicates with the slow release layer through the communicating holes. Meanwhile, the invention provides the method for manufacturing the drag reduction device. The highly lifelike shark-imitated drag reduction structure manufactured through the manufacturing method is in highly lifelike shark-imitated scale groove shapes and can slowly release a drag reducer, so that the efficient coupling and drag reducing effects of the scale grooves and self-lubricating viscous liquid are achieved.

Description

technical field [0001] The invention relates to a drag reducing device for an underwater vehicle on the water surface and a preparation method thereof, belonging to the technical field of shipbuilding. Background technique [0002] Sharks are typical high-speed swimming cartilaginous fish. The shark's shield-like scales arranged in a diamond shape and the mucus instantly secreted by the subscale skin when maneuvering at high speed are the main reasons for the shark's fast swimming. In order to save energy, the amount of mucus secreted by sharks is usually very small each time, and only a layer of polymer film is formed on the surface of the scales, and the film is replenished as it is consumed, which is a slow release process. The micro-morphology of shark skin grooves and the micro-sustained release of mucus together constitute the "shark skin effect" of composite drag reduction. Therefore, copying the micro-morphology of shark shield scale grooves, imitating the drag redu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B1/32C03B19/00
CPCB63B1/32C03B19/00Y02T70/10
Inventor 韩鑫孙延刚赵德楠高宪成王政皓
Owner SHANDONG UNIV OF TECH
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