Heat Conduction and Characteristic Size of Fractal Porous Media
WANG Wei-Wei1,2 , HUAI Xiu-Lan1 , TAO Yu-Jia1
1 Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080
2 Graduate School of Chinese Academy of Sciences, Beijing 100049
Heat Conduction and Characteristic Size of Fractal Porous Media
WANG Wei-Wei1,2 ;HUAI Xiu-Lan1 ;TAO Yu-Jia1
1 Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080
2 Graduate School of Chinese Academy of Sciences, Beijing 100049
关键词 ：
44.10.+i ,
44.30.+v
Abstract ： Based on fractal theory, two types of random Sierpinski carpets (RSCs) and their periodic structures are generated to model the structures of natural porous media, and the heat conduction in these structures is simulated by the finite volume method. The calculated results indicate that in a certain range of length scales, the size and spatial arrangement of pores have significant influence on the effective thermal conductivity, and the heat conduction presents the aeolotropic characteristic. Above the length scale, however, the influence of size and spatial arrangement of pores on the effective thermal conductivity reduces gradually with the increasing characteristic size of porous media, the aeolotropic characteristic is weakened gradually. It is concluded that the periodicity in structures of porous media is not equal to the periodicity in heat conduction.
Key words ：
44.10.+i
44.30.+v
出版日期: 2006-06-01
引用本文:
WANG Wei-Wei;HUAI Xiu-Lan;TAO Yu-Jia. Heat Conduction and Characteristic Size of Fractal Porous Media[J]. 中国物理快报, 2006, 23(6): 1511-1514.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2006/V23/I6/1511
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