复合介质与界面传热的多物理模型与计算

MULTIPHYSICAL MODELING AND COMPUTATION FOR HEAT TRANSFER OF COMPOSITE MEDIA AND THE INTERFACES

本文针对周期和随机结构复相介质与界面的多尺度热问题,提出了一个多物理模型和耦合算法,内容包括:计算界面导热系数的分子动力学方法;随机结构宏观有效导热系数和温度场的均匀化与多尺度方法;界面温度场与宏观温度场的关联模式及局域场的量子力学修正.

In this paper, we develop a multiphysical model and a coupled algorithm for the heat transfer of composite media and the interfaces. The present method is composed of three parts： （1） NEMD method for computing the heat transfer coefficients on the interfaces; （2） the homogenization method for calculating the macroscopic effective heat transfer coefficients and the multiscale method for evaluating the macroscopic temperature field in random heterogeneous media; （3） the quantum mechanical correction for the thermal field on the interfaces and the micro-to macro-scale coupling.