BOUNDARY AND INERTIA EFFECTS ON FLOW AND HEAT-TRANSFER IN POROUS-MEDIA
BOUNDARY AND INERTIA EFFECTS ON FLOW AND HEAT-TRANSFER IN POROUS-MEDIA
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DOI：
10.1016/0017-9310(81)90027-2
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发表时间：
1981-01-01
影响因子：
5.2
通讯作者：
TIEN, CL
中科院分区：
文献类型：
--
作者：
VAFAI, K;TIEN, CL
本文分析了固体边界和惯性力对多孔介质流动和传热的影响。特别注意的是通过多孔介质中的一个不可渗透的边界附近的流动。局部体积平均技术已被用来建立控制方程，沿着的物理限制和假设的指示，在这个发展的过程中。为了研究多孔介质中不可渗透边界附近的速度场和温度场，提出了控制方程的数值格式，并提出了动量边界层的新概念。的边界和惯性效应的特点是在三个无量纲组，这些效果被证明是更明显的高渗透性介质，高普朗特数流体，大的压力梯度，并在该区域靠近流动边界层的前缘。
The present work analyzes the effects of a solid boundary and the inertial forces on flow and heat transfer in porous media. Specific attention is given to flow through a porous medium in the vicinity of an impermeable boundary. The local volume-averaging technique has been utilized to establish the governing equations, along with an indication of physical limitations and assumptions made in the course of this development. A numerical scheme for the governing equations has been developed to investigate the velocity and temperature fields inside a porous medium near an impermeable boundary, and a new concept of the momentum boundary layer central to the numerical routine is presented. The boundary and inertial effects are characterized in terms of three dimensionless groups, and these effects are shown to be more pronounced in highly permeable media, high Prandtl-number fluids, large pressure gradients, and in the region close to the leading edge of the flow boundary layer.