提高花纹沟排水能力是提升轮胎抗滑水性能的主要途径之一，借鉴仿生学理念，将凹坑形仿生非光滑结构引入花纹沟，探索研究通过降低花纹沟流体阻力提高花纹沟排水能力的仿生方法。以轮胎接地区单个花纹沟作为研究对象，在沟底布置凹坑形仿生非光滑结构，运用计算流体动力学(Computational fluid dynamics，CFD)和正交试验设计相结合的方法，研究凹坑形仿生非光滑结构对壁面减阻率的影响规律，确定最优参数组合；为进一步提升凹坑形仿生非光滑结构的减阻率，提出一种水滴形凹坑仿生结构，并对其减阻特性进行分析，得出其减阻效果优于圆形凹坑结构；将最优的水滴形凹坑仿生结构布置于花纹沟底部，分析其抗滑水性能。结果表明，水滴形凹坑仿生结构能够减小水流阻力，提高轮胎花纹沟排水量，降低轮胎在水膜上行驶时所受到的胎面动水压力，提升轮胎的抗滑水性能。

Enhancing the groove drainage ability is one of the main ways to improve the tire anti-hydroplaning performance. Inspired by the bionic theory, the pit bionic non-smooth structure is introduced into tire groove and bionic method for enhance groove drainage ability by reducing fluid resistance is explored. The single tire groove of contact area is extracted for analysis and the pit bionic non-smooth structure is arranged on the bottom of tire groove. The computational fluid dynamics(CFD) and orthogonal experimental design are used to study the influence of pit bionic non-smooth structure on wall drag reduction, and the optimal parameters combination is determined. To further enhance the drag reduction rate of pit bionic non-smooth structure, a water drop shaped pit boinic structure is proposed and its drag reduction characteristic is analyzed. The results show the drag reduction effect of the water drop shaped pit boinic structure is better than spherical pit structure. The optimal water drop shaped pit structure is arranged on the bottom of tire groove for anti-hydroplaning analysis. The results show that the water drop shaped pit boinic structure can reduce flow resistance and improve the groove drainage volume. Therefore, it can decrease the tread hydrodynamic pressure when driving on water film and raise the tire anti-hydroplaning performance.