超疏水表面水下减阻技术研究进展

Research on Underwater Drag Reduction Technology of Super-hydrophobic Surfaces

超疏水表面能够通过形成水下气液界面有效降低流体的摩擦阻力,具有良好的减阻性能,在水下航行器、微流体器件及管道运输等领域有着广阔的应用前景。本文基于超疏水表面的润湿特性,讨论介绍了其表面产生减阻现象的机理,重点总结了国内外超疏水表面减阻效率的影响因素与水下气液界面增稳、恢复问题的研究现状。最后,对超疏水表面在水下减阻应用上面临的问题和发展前景进行了探讨,为超疏水表面水下减阻技术的研发工作提供参考。

Superhydrophobic surface can reduce the flow resistance of liquid by forming underwater gas-liquid interfaces and has good drag reduction performance.It has broad application prospect in the field of underwater vehicles,microfluidic devices and pipeline transportation.Based on the wettability of superhydrophobic surface,the mechanism of drag reduction on superhydrophobic surface is discussed and introduced,and then the research status of the factors affecting the drag reduction efficiency of superhydrophobic surfaces,stabilization and recovery of underwater gas-liquid interfaces at home and abroad is focused on.Finally,the problems and development prospects of the application of superhydrophobic surface in underwater drag reduction are discussed,which can provide reference for the development of superhydrophobic underwater drag reduction technology.