Thermal conductivity of low-particle-concentration suspensions: Correlation function approach

被引：10
作者：
Braginsky, Leonid [1 ,2 ]
Shklover, Valery [1 ]
机构：
[1] Swiss Fed Inst Technol, Dept Mat, Crystallog Lab, CH-8093 Zurich, Switzerland
[2] Inst Semicond Phys, Novosibirsk 630090, Russia
来源：
PHYSICAL REVIEW B | 2008年 / 78卷 / 22期
关键词：
interface phenomena; nanoparticles; suspensions; thermal conductivity;
D O I：
10.1103/PhysRevB.78.224205
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A method of determining the thermal conductivity of nanofluids is proposed. The approach uses the two-point correlation function of local thermal conductivities, which can be estimated from an optical image of the fluid. The effect of the particles shape and their agglomeration on the thermal conductivity of nanofluids is investigated. Effective increase in the particles concentration due to ordering at the nanoparticle-liquid interface is considered. It is shown that the effective media approximation holds for nanofluids with a low volume fraction of nanoparticles.
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页数：5
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