Bionic drag reduction method using micro-groove and viscoelastic working medium coating

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Bionic drag reduction method using micro-groove and viscoelastic working medium coating

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GUO LIQI / ZHANG HONGNA / LI XIAOBIN / WANG KAITING / ZHAN ZENGKUN / WANG SUMING / WANG YAN / CHENG HAOTIAN / LI FENGCHEN

Abstract

The invention provides a bionic drag reduction method utilizing a micro groove and a viscoelastic working medium coating, and mainly relates to a micro bionic groove structure drag reduction technology and a viscoelastic fluid turbulence drag reduction technology. Specifically, a micro groove structure is printed on the surface of an underwater navigation body coated with a viscoelastic working medium coating, so that the underwater navigation body has the effects of flow guide of the micro groove, inhibition of generation of turbulent vortex, inhibition of turbulent transition and maintenance of a boundary layer by a viscoelastic fluid working medium, and reduction of navigation resistance. The bionic drag reduction purpose is achieved only through the coating and the mode of printing the microstructures on the coating, the overall structure of the underwater navigation body is slightly changed, and machining and replacement are convenient. According to the method, rapid adaptation can be carried out according to the actual navigation body structure, the method has the advantages of being high in error-tolerant rate, economical, convenient and remarkable in effect, and the problems that in the prior art, the drag reduction effect is not obvious, and adaptability is poor are solved.

本发明提出了一种利用微沟槽和黏弹性工质涂层的仿生减阻方法，主要涉及微型仿生沟槽结构减阻技术与黏弹性流体湍流减阻技术。具体地，将微型沟槽结构印制在涂有黏弹性工质涂料的水下航行体表面，使其同时具备微型沟槽导流，抑制湍流涡旋发生，黏弹性流体工质抑制边界层湍流转捩与维持，从而降低航行阻力的效果。本发明仅通过涂层及在涂层上印制微型结构的方式达到仿生减阻的目的，对水下航行体整体结构改动极小，方便加工和替换。本发明可根据实际航行体结构进行快速适配，具有容错率高、经济便捷且效果显著的优点，解决了现有技术减阻效果不明显，适配性差等问题。

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Document information

Title :

Bionic drag reduction method using micro-groove and viscoelastic working medium coating

Additional title:

一种利用微沟槽和黏弹性工质涂层的仿生减阻方法

Contributors:

GUO LIQI (author) / ZHANG HONGNA (author) / LI XIAOBIN (author) / WANG KAITING (author) / ZHAN ZENGKUN (author) / WANG SUMING (author) / WANG YAN (author) / CHENG HAOTIAN (author) / LI FENGCHEN (author)

Publication date :

2024-01-02

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Chinese

Classification :

IPC:

B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS