基于FLUENT软件的雨天轮胎动水压强的影响因素研究  

Influencing Factor of Hydrodynamic Pressure on Tire in Wet Weather Based on Fluent

作　　者：董斌[1] 陈明磊[2] 唐伯明[3] 刘唐志[3] 

机构地区：[1]中交第二公路勘察设计研究院有限公司,湖北武汉430056 [2]无锡市政设计研究院有限公司,江苏无锡214072 [3]重庆交通大学,重庆400074

出　　处：《公路交通科技》2012年第4期120-125,131,共7页Journal of Highway and Transportation Research and Development

基　　金：交通运输部西部交通建设科技项目(2008318000034)

摘　　要：动水压强是影响汽车雨天滑水的直接因素。通过建立纵横向花纹轮胎有限元模型,利用Fluent软件模拟不同行驶条件下轮胎所受的动水压强大小以及轮胎不同部位水流速度的分布规律,并根据数据结果回归得出了行车速度、水膜厚度和轮胎花纹深度与动水压强的关系式。结果表明:轮胎所受到的动水压强取决于水膜厚度、胎纹深度及行车速度;随着水膜厚度的增加,动水压强与车速的关系逐渐由非线性向线性转变;行车速度对动水压强的影响最为明显,仅改变轮胎花纹深度不能完全避免车辆滑水。Hydrodynamic pressure is the major cause of vehicle hydroplaning in wet weather. By establishing finite element model of tire with longitudinal and transverse pattern, hydrodynamic pressure of tire under different driving conditions and distributing pattern of water velocity in different parts of tire were obtained through Fluent. Then the relations of hydrodynamic pressure with vehicle velocity, water film thickness, depth of tire pattern depth were gained based on data regression. The results show that （ 1 ） the hydrodynamic pressure of tire depends on water film thickness, tread pattern depth and vehicle speed ; （2） with the water film thickness increases, the relation between hydrodynamic pressure and vehicle speed gradually shifts from non-linear to linear; （ 3 ） the influence of vehicle speed on hydrodynamic pressure is the most obvious, changing the tread pattern depth alone cannot completely avoid hydroplaning

关 键 词：交通工程 动水压强 FLUENT 水膜厚度 花纹深度 车速 

分 类 号：U491.25[交通运输工程—交通运输规划与管理]