【摘要】 根据热质比拟的基本原理 ,采用萘升华技术 ,在风洞中利用直线运动的旋转圆盘模拟研究了滚动轮胎表面的对流换热系数。当风速为 14m·s- 1 时 ,轮胎表面对流换热系数与汽车行驶速度呈线性关系 ,随着汽车行驶速度的增大 ,轮胎表面对流换热系数也增大 ,其经验式为h =5 2 99+1 2 43 8v。更多还原

【Abstract】 Based on the principle of heat mass analogy,the convective heat transfer coefficient on rolling tire surface was simulatively investigated with a linearly moving rotary disc in a wind tunnel by using naphthalene sublimation technology.The results showed that the convective heat transfer coefficient on rolling tire surface was directly proportional to the vehicle speed at the wind speed of 14 m·s -1 ,and its empirical formula was as follows: h =5 299+1 243 8 v .更多还原