Modern Manufacturing Engineering ›› 2019, Vol. 460 ›› Issue (1): 23-31.doi: 10.16731/j.cnki.1671-3133.2019.01.005

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Influence analysis of bionic pit non-smooth surface pattern on tire hydroplaning performance

Chen Lei, Zhou Haichao, Pan Gongyu   

  1. School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China
  • Received:2017-04-18 Online:2019-01-20 Published:2019-02-15

Abstract: Taking the 205/55R16 tires as the research object,using Computational Fluid Dynamic(CFD) method to simulate the tire hydroplaning performance,the effectiveness of the hydroplaning model is verified by comparing the simulated value of hydroplaning velocity with the predicted value of National Aeronautics and Space Administration (NASA) hydroplaning equation.In order to improve the tire hydroplaning performance,learning from the theory of bionic non-smooth drag reduction,the pit non-smooth structure with rectangular mode is arranged on both side of the groove.The method of response surface analysis is used to optimize the four parameters which are pit top circle diameter,pit depth,downstream pit distance and spanwise pit distance.The mechanism of drag reduction is revealed from the point of view of flow field.Based on the above study,the optimal dimple structure is introduced into the whole tire hydroplaning analysis model.Compared with the hydroplaning performance of smooth wall tires,the results show that pit non-smooth could improve the tire hydroplaning performance by reducing the tread hydrodynamic pressure.

Key words: pit non-smooth structure, tire hydroplaning, CFD, response surface analysis, numerical simulation

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