Particle concentration and tube size dependence of viscosities of Al2O3-water nanofluids flowing through micro- and minitubes
In: Applied Physics Letters, Jg. 91 (2007-12-10), S. 243112-243112
Online
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Zugriff:
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 0.02–0.3vol% 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.
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Particle concentration and tube size dependence of viscosities of Al2O3-water nanofluids flowing through micro- and minitubes
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Autor/in / Beteiligte Person: | Seok Pil Jang ; Kyo Sik Hwang ; Lee, Ji-Hwan ; Choi, Stephen U. S. |
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Zeitschrift: | Applied Physics Letters, Jg. 91 (2007-12-10), S. 243112-243112 |
Veröffentlichung: | AIP Publishing, 2007 |
Medientyp: | unknown |
ISSN: | 1077-3118 (print) ; 0003-6951 (print) |
DOI: | 10.1063/1.2824393 |
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