非光滑结构对轮胎抗滑水性能影响分析

借鉴流体领域中非光滑结构减阻特性,在轮胎纵向花纹沟底部引入V形沟槽结构,探索其对轮胎抗滑水性能的影响。以轮胎单个花纹沟作为分析对象,建立V形沟槽分布数学模型和轮胎滑水模型,运用CFD(计算流体力学)方法对轮胎滑水进行数值分析。借助正交试验法建立L16(45)正交表,分析V形沟槽结构相比光滑结构的壁面减阻率,得到减阻效果最佳的V形沟槽设计参数,接着将优选出的V形沟槽非光滑结构引入到轮胎纵向花纹沟槽底部进行滑水分析。结果表明：V形沟槽非光滑结构能有效降低轮胎花纹沟壁面阻力系数,提高轮胎的抗滑水性能。

Analysis about the influence of non-smooth structure on tire anti-hydroplaning performance

According to the characteristic of reducing resistance of non-smooth structure in fluid field, V-riblet structure was introduced into the bottom of the tire longitudinal groove and the influence on tire anti-hydroplaning performance was explored. Single tire groove was taken as analysis object, the mathematical model of V-riblet distribution and tire hydroplaning model was established. CFD (computational fluid dynamics) method was used for numerical analysis of tire hydroplaning. An orthogonal table L16(45) was built through orthogonal experiment method, the comparison of wall drag reduction rate between the V-riblet structure and smooth structure was analyzed. Then the best drag reduction combination of V-riblet design parameter can be achieved. Afterwards, preferred type of V-riblet non-smooth structure was introduced into the bottom of tire longitudinal groove for hydroplaning analysis. The results show that: V-riblet non-smooth structure can effectively reduce the drag coefficient of the wall, and tire anti-hydroplaning performance can be improved when V-riblet non-smooth structure is arranged on the bottom of the tire groove.