仿生表面减阻的研究现状与进展

仿生表面减阻是众多减阻方法中非常有前景的减阻方式。目前研究最多的是仿生鲨鱼皮减阻和仿生超疏水表面减阻,其中仿生鲨鱼皮表面减阻又分为直接复刻鲨鱼皮表面的盾鳞结构和仿鲨鱼皮沟槽减阻。文中介绍了国内外关于仿生减阻的最新研究进展及成果,综述了仿生鲨鱼皮表面减阻和仿生超疏水表面减阻的研究现状,探讨了仿生表面减阻未来的发展方向和研究重点。虽然仿生超疏水表面一般都具有粗糙的表面微纳结构以及较低的表面能,但不是所有的超疏水表面都具有减阻效果,因此超疏水表面的减阻效果还需要一个度量标准。

Research Status and Progress of Bionic Surface Drag Reduction

Bionic surface drag reduction is a very promising drag reduction way at all drag reduction techniques.The bionic shark skin drag reduction and bionic superhydrophobic surfaces drag reduction have currently got more attention. The fabrication of the bionic shark skin structure focuses on two styles: shark placoidscales directly replicated and simplified riblet structure. Research advances and progresses in the world on bionic shark skin drag reduction and bionic superhydrophobic surface drag reduction are introduced in this paper. The development directions and emphasis of bionic surface drag reduction are proposed. Superhydrophobic surface usually has a rough surface micro structure and the low surface energy, however, not all superhydrophobic surfaces have the drag reduction effect; thus, the drag reduction effect of superhydrophobic surface need a metric.