Heat and Fluid Flow Within an Anisotropic Porous Medium
Heat and Fluid Flow Within an Anisotropic Porous Medium
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各向异性多孔介质内的热流和流体流
DOI：
10.1115/1.1481355
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发表时间：
2002
影响因子：
--
通讯作者：
T. Hayashi
中科院分区：
文献类型：
--
作者：
A. Nakayama;F. Kuwahara;T. Umemoto;T. Hayashi
利用Navier-Stokes方程和能量方程，在孔隙尺度上模拟了层流流体在各向异性多孔介质中的流动和传热。放置在无限二维空间中的方棒集合已被提出作为微观多孔结构的数值模型。在纵向中心距离固定的情况下，通过改变横向中心距离来改变各向异性的程度。对各组宏观流动角、雷诺数和各向异性程度进行了广泛的计算。将得到的数值结果在一个空间上进行积分，确定渗透率张量、Forchheimer张量和定向界面换热系数
A numerical experiment at a pore scale using a full set of Navier-Stokes and energy equations has been conducted to simulate laminar fluid flow and heat transfer through an anisotropic porous medium. A collection of square rods placed in an infinite two-dimensional space has been proposed as a numerical model of microscopic porous structure. The degree of anisotropy was varied by changing the transverse center-to-center distance with the longitudinal center-to-center distance being fixed. Extensive calculations were carried out for various sets of the macroscopic flow angle, Reynolds number and degree of anisotropy. The numerical results thus obtained were integrated over a space to determine the permeability tensor, Forchheimer tensor and directional interfacial heat transfer coefficient