纳米流体的界面层与导热性

R. Pasrija, S. Srivastava
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引用次数: 12

摘要

纳米流体是一类纳米颗粒的胶体分散体,与其他传统的传热流体相比,纳米流体表现出异常的导热性能。在造成这种异常的各种因素中,纳米层厚度的作用是相当重要的。本文通过提出界面层导热系数曲线的一种新的指数形式来阐述其影响。纳米颗粒大小、体积分数和纳米颗粒与基液的导热率的影响构成了讨论的一部分。以氧化铝/EG和氧化铜/水两种纳米流体为例,该方案较好地预测了两种纳米流体导热性的增强。©2013 Wiley期刊公司热力学报,43(3):288-296,2014;2013年10月3日在线发表于Wiley在线图书馆(wileyonlinelibrary.com/journal/htj)。DOI 10.1002 / htj.21084
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The Interfacial Layer and the Thermal Conductivity of Nanofluid
Nanofluids are a class of colloidal dispersion of nanosized particles which are found to exhibit anomalous heat conducting properties compared to other conventional heat transfer fluids. Among various factors responsible for this anomaly, the role of nanolayer thickness is found to be quite important. This article includes its effect by suggesting a new exponential form for the profile of thermal conductivity in the interfacial layer. The effect of nanoparticle size, the volume fraction, and the ratio of thermal conductivity of the nanoparticle to the base fluid form part of the discussion. The presented scheme predicts well the enhancement of thermal conductivity of two nanofluids, alumina/EG and CuO/water, used as an example. © 2013 Wiley Periodicals, Inc. Heat Trans Asian Res, 43(3): 288–296, 2014; Published online 3 October 2013 in Wiley Online Library (wileyonlinelibrary.com/journal/htj). DOI 10.1002/htj.21084
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