Convection Heat Transfer
Convection Heat Transfer
复制标题
DOI：
10.1201/b15230-9
复制
发表时间：
1984-10
期刊：
影响因子：
--
通讯作者：
A. Bejan
中科院分区：
文献类型：
--
作者：
A. Bejan
当我们考虑多孔介质中流体流动和传热的同时，需要考察宏观（Darcean）和微观（孔隙级）速度场对温度场的作用。实验表明，仅仅在能量方程中包含u D•∇< T >并不能准确地解释所有的水动力效应。孔隙级流体力学对温度场也有影响。孔隙级速度不均匀性对温度分布的影响（称为弥散效应，通常包含在扩散输运中）是本章的主要关注点。
As we consider simultaneous fluid flow and heat transfer in porous media, the role of the macroscopic (Darcean) and microscopic (pore-level) velocity fields on the temperature field needs to be examined. Experiments have shown that the mere inclusion of u D • ∇ 〈T〉 in the energy equation does not accurately account for all the hydrodynamic effects. The pore-level hydrodynamics also influence the temperature field. Inclusion of the effect of the pore-level velocity nonuniformity on the temperature distribution (called the dispersion effect and generally included in the diffusion transport) is the main concern in this chapter.