【摘要】 采用数值方法对型材散射器的三维流场及温度场进行了分析计算 .对流项的离散采取了一阶迎风格式 ,用SIMPLEC算法在交错网格上进行迭代计算 .流场中气体和固体区域采用了整体求解方法 .在此基础上 ,定量分析了结构因素对散热器热阻的影响 .实验数据表明了该算法的有效性 .更多还原

【Abstract】 The three dimensional velocity field and temperature field of the plate fin heat sink are calculated by numerical methods. The upwind difference scheme is used to deal with the discretization of the convection diffusion term. The pressure velocity coupling is treated with the SIMPLEC algorithm using a staggered grid system. The same set of momentum and energy equations are solved for the solid and fluid regions. The relation between thermal resistances and sink structure is numerically analyzed on this basis. Finally, experimental results show that the algorithm is effective.更多还原