轮胎滑水特性的CFD分析

205/50R16子午线轮胎为研究对象，建立带有纵向花纹沟的轮胎有限元模型（FEM）和计算流体动力学（CFD）模型。基于流固耦合的FEM模拟轮胎滑水产生的过程，采用重整规化群和流体体积组分方法的CFD模型得到轮胎接地区域内的水膜流场分布。两种模型计算结果对比表明，CFD模型能够用来分析胎面微花纹沟内流体流动特性。随着水膜厚度的增大，轮胎受到的流体压力也变大，容易出现滑水现象。;The finite element model（FEM） and the computational fluid dynamics（CFD） model of 205/50R16 radial tire with longitudinal tread groove pattern were developed.The process of hydroplaning was simulated by fluid solid coupled FEM，and the fluid flow field in tire contact region was obtained by using CFD model with RNG（renormalization group） and VOF（volume of fluid） methods.The comparison results of two models showed that the CFD model could be used to effectively analyze the fluid flow characteristics in micro grooves，and as the thickness of water film increased，the fluid pressure increased，which would most likely cause dynamic hydroplaning