超疏水表面水下减阻研究进展

Research on Underwater Drag Reduction of Superhydrophobic Surface

摘要:

超疏水表面在水下可以束缚气膜层，把部分固液接触界面转变为气液接触界面，并在气液界面上产生速度滑移以减小流动阻力，是一种新型高效减阻方法。从超疏水表面润湿特性出发，重点总结了超疏水表面水下减阻研究现状，分析了超疏水表面气液界面稳定维持的主要技术途径。最后，给出了提升气液界面稳定性的潜在突破方法，可为超疏水表面水下减阻技术的发展提供借鉴。

Abstract:

The superhydrophobic surface is a promising method for drag reduction. Since it can bind gas film under water and change parts of solid-water interface into air-water interface，then the velocity slip is produced on the air-water interface to reduce flow drag. Based on the characteristics of wettability of superhydrophobic surfaces， this paper summarizes the research status of drag reduction of superhydrophobic surface，and then analyzes the main technologies to stabilize the air-water interface. Finally，the potential breakthrough method to improve the stability of air-water interface is given，which provides a reference for the development of drag reduction of superhydrophobic surfaces.