期刊
APPLIED PHYSICS LETTERS
卷 91, 期 24, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.2824393
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资金
- National Research Foundation of Korea [R01-2007-000-11464-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
An experimental and theoretical investigation has been performed on the effective viscosity of Al2O3-water nanofluids flowing through micrometer- and millimeter-sized circular tubes in the fully developed laminar flow regime. We have discovered that the effective viscosity of Al2O3-water nanofluids increases nonlinearly with the volume concentration of nanoparticles even in the very low range of 0.02-0.3 vol % and strongly depends on the ratio of the nanoparticle diameter to the tube diameter. We have developed a modified Einstein model that accounts for the slip mechanism in nanofluids. The new model captures these new rheological features of nanofluids. (C) 2007 American Institute of Physics.
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