水下滑移边界减阻技术研究综述

A review of drag reduction technology for underwater slip boundary

流动减阻问题是科学与工程界长久以来关注的重点问题,对国民经济和国防军事具有重要影响。受自然界中荷叶、猪笼草等生物的启发,制备出仿生水下滑移表面,其主要分为气-液界面和液体浸润表面。水下滑移边界减阻技术可以实现较高的减阻效果,然而目前对水下滑移边界减阻技术的研究还存在诸多不足。本文立足于水下滑移边界减阻技术,论述了水下滑移边界的基本理论、实现形式,重点介绍气-液界面和液体浸润表面减阻的研究现状,探讨了减阻研究中存在的关键科学问题,最终对水下航行器减阻技术的未来发展趋势进行了展望。

Drag reduction has attracted a lot of attention in both engineering and sciences,which is important for national economy and military defense.Inspired by nature such as lotus and Nepenthes,biological underwater slip surfaces are fabricated,which mainly contain liquid-gas interface and liquid-infused surface.Underwater slip boundary technology shows good performance on drag reduction,while the study on drag reduction by underwater slip boundary technology is still unclear.Based on the underwater slip boundary drag reduction technology,this paper reviews the basic theories and implementation of underwater slip boundary and particularly overviews the study on drag reduction by liquid-gas interface and liquidinfused surface.Moreover,the key scientific issues of underwater slip boundary drag reduction are discussed.At last,this review looks forward to the future trends of drag reduction technology for underwater vehicles.