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学科主题: Physics, Applied
题名: Effects of shear rate and temperature on viscosity of alumina polyalphaolefins nanofluids
作者: Zhou, SQ ; Ni, R ; Funfschilling, D
通讯作者: sqzhou@phy.cuhk.edu.hk
刊名: JOURNAL OF APPLIED PHYSICS
发表日期: 2010
卷: 107, 期:5, 页:-54317
收录类别: sci
部门归属: [Zhou, Sheng-Qi] Chinese Acad Sci, S China Sea Inst Oceanol, Lab Trop Marine Environm Dynam, Guangzhou 510301, Guangdong, Peoples R China; [Zhou, Sheng-Qi; Ni, Rui; Funfschilling, Denis] Chinese Univ Hong Kong, Dept Phys, Satin, Hong Kong, Peoples R China; [Funfschilling, Denis] LSGC CNRS GROUPE ENSIC, F-54001 Nancy, France
项目归属: LED
摘要: In this paper, the shear rate and temperature dependencies of viscosity of alumina nanofluids have been investigated experimentally. The alumina nanofluids are suspensions of alumina nanospheres or nanorods in polyalphaolefins (PAO) lubricant. The base fluid PAO has a Newtonian behavior. To the first approximation, nanofluids of volume fractions phi = 1% and 3% nanospheres as well as nanofluid of phi = 1% nanorods can be considered as Newtonian fluids because their viscosity shows very weak shear rate dependence. However, our measurement clearly indicates that these nanofluids demonstrate certain non-Newtonian feature due to the addition of nanoparticles. Moreover, the relative viscosity (the ratio of viscosity of nanofluid to that of PAO) of these nanofluids has been measured to be independent of temperature. Nanofluid of a higher volume fraction phi = 3% nanorods has an apparent non-Newtonian shear thinning viscosity and a strong temperature dependence of its relative viscosity. By reviewing the previous studies, the approximation that the viscosity is Newtonian and the relative viscosity is independent of temperature seem to hold for most nanofluids of low volume fraction phi and low aspect ratio nanoparticles. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3309478]
原文出处: 查看原文
WOS记录号: WOS:000275657500116
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/6313
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Recommended Citation:
Zhou, SQ; Ni, R; Funfschilling, D.Effects of shear rate and temperature on viscosity of alumina polyalphaolefins nanofluids,JOURNAL OF APPLIED PHYSICS,2010,107(5):-54317
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