轮胎滑水的CFD计算方法研究

Study on computational methods of tire hydroplaning using CFD

针对轮胎滑水现象,采用VOF模型(Volume of Fluid Model)进行了CFD数值模拟计算。建立了分析对象的物理模型(轮胎模型、水模型和边界条件及初始条件)和RNGk-ε湍流模型;采用多块网格技术对计算域进行了离散,重点模拟分析三种不同入口速度下的动水压力变化和轮胎附近流场变化。最后和国外学者所做的试验和相关文献结果进行了对比,表明本文介绍的方法是可行的,该方法为轮胎产品开发提供了有效经济的技术支持。

The VOF （Volume of Fluid） models were applied in this paper to simulate the hydro-planing oftires using CFD. A physical model （tire,water,boundary conditions and initial conditions） and RNG κ-εturbulent model were established~ the computational domain was meshed by multi-block grid technique, the hydrodynamic force and flow field around tire were simulated specially in three velocities. Finally, after comparing the results from CFD method with experiments by foreign authors and relative document literature,a conclusion shows that CFD is a powerful tool to calculate and analysis the hydro-planing of tires.