Thermal conductivity of porous structures

被引：34
作者：
Braginsky, L. [1 ]
Shklover, V.
Witz, G.
Bossmann, H. -P.
机构：
[1] ETH, Crystallog Lab, CH-8093 Zurich, Switzerland
[2] Alstom Schweiz AG, CH-5401 Baden, Switzerland
来源：
PHYSICAL REVIEW B | 2007年 / 75卷 / 09期
关键词：
D O I：
10.1103/PhysRevB.75.094301
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Thermal conductivity of porous media is considered. The model permits regular power-series expansion of the expression for thermal conductivity as a function of porosity. The coefficients of the expansion depend on two-site correlation function of local thermal conductivities, which can be calculated from the microscopy image of the structure. Thermal conductivities of some model two-dimensional structures as well as a real porous yttria-stabilized zirconia film are calculated and discussed.
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