摘要
在摩擦表面温升计算模型中,引入辐射散热系数-对流换热系数折算因子,根据Ne-wton冷却定律和Stefan-Boltzmann定律提出了一种计算热交换的新方法。应用该方法,基于AN-SYS对刹车盘进行了数值仿真。仿真数据与试验结果的相对误差为8.35%,证明热辐射系数-对流换热系数折算方法的正确性。
A conversion factor of heat radiation coefficient - film coefficient was introduced. A new method which translates heat radiation coefficient into film coefficient was put forward according to Newton cooling law and Stefan - Boltzmann law in computing friction surface temperature. Using this method, computer simulation analysis on the braking disc temperature was done base on ANSYS. The experimental and FEM analytical results were compared, their relative error is 8.35 %, it shows the new method is correct.
出处
《煤矿机械》
北大核心
2008年第3期31-32,共2页
Coal Mine Machinery
关键词
热辐射
热对流
刹车盘
折算因子
heat radiation
heat convection
brake disc
conversion factor
