A generalized model for the effective thermal conductivity of porous media based on self-similarity

CORC > 力学研究所 > 中国科学院力学研究所 > 力学所知识产出(1956-2008)

	A generalized model for the effective thermal conductivity of porous media based on self-similarity
	Feng YJ; Yu BM(郁伯铭); Zou MQ; Zhang DM
刊名	Journal of Physics D-Applied Physics
	2004
通讯作者邮箱	yu3838@public.wh.hb.cn
卷号	37 期号:21 页码:3030-3040
关键词	Fractal Sandstone Pores Permeability Model Granular-Materials Characters Fabrics Systems
ISSN号	0022-3727
通讯作者	Yu, BM (reprint author), Huazhong Univ Sci & Technol, Dept Phys, 1037 Luoyu Rd, Wuhan 430074, Peoples R China.
中文摘要	A generalized model for the effective thermal conductivity of porous media is derived based on the fact that statistical self-similarity exists in porous media. The proposed model assumes that porous media consist of two portions: randomly distributed non-touching particles and self-similarly distributed particles contacting each other with resistance. The latter are simulated by Sierpinski carpets with side length L = 13 and cutout size C = 3, 5, 7 and 9, respectively, depending upon the porosity concerned. Recursive formulae are presented and expressed as a function of porosity, ratio of areas, ratio of component thermal conductivities and contact resistance, and there is no empirical constant and every parameter has a clear physical meaning. The model predictions are compared with the existing experimental data, and good agreement is found in a wide range of porosity of 0.14-0.80, and this verifies the validity of the proposed model.
类目[WOS]	Physics, Applied
研究领域[WOS]	Physics
关键词[WOS]	FRACTAL SANDSTONE PORES ; PERMEABILITY MODEL ; GRANULAR-MATERIALS ; CHARACTERS ; FABRICS ; SYSTEMS
收录类别	SCI
语种	英语
WOS记录号	WOS:000225382500014
公开日期	2009-08-03 ; 2010-06-13
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/33735]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Feng YJ,Yu BM,Zou MQ,et al. A generalized model for the effective thermal conductivity of porous media based on self-similarity[J]. Journal of Physics D-Applied Physics,2004,37(21):3030-3040.
APA	Feng YJ,Yu BM,Zou MQ,&Zhang DM.(2004).A generalized model for the effective thermal conductivity of porous media based on self-similarity.Journal of Physics D-Applied Physics,37(21),3030-3040.
MLA	Feng YJ,et al."A generalized model for the effective thermal conductivity of porous media based on self-similarity".Journal of Physics D-Applied Physics 37.21(2004):3030-3040.