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Rheological behaviour of ethylene glycol-titanate nanotube nanofluids
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Chen, Haisheng, Ding, Yulong, Lapkin, Alexei and Fan, Xiaolei (2009) Rheological behaviour of ethylene glycol-titanate nanotube nanofluids. Journal of Nanoparticle Research, Vol.11 (No.6). pp. 1513-1520. doi:10.1007/s11051-009-9599-9 ISSN 1388-0764.
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Official URL: http://dx.doi.org/10.1007/s11051-009-9599-9
Abstract
Experimental work has been performed on the rheological behaviour of ethylene glycol based nanofluids containing titanate nanotubes over 20–60 °C and a particle mass concentration of 0–8%. It is found that the nanofluids show shear-thinning behaviour particularly at particle concentrations in excess of ~2%. Temperature imposes a very strong effect on the rheological behaviour of the nanofluids with higher temperatures giving stronger shear thinning. For a given particle concentration, there exists a certain shear rate below which the viscosity increases with increasing temperature, whereas the reverse occurs above such a shear rate. The normalised high-shear viscosity with respect to the base liquid viscosity, however, is independent of temperature. Further analyses suggest that the temperature effects are due to the shear-dependence of the relative contributions to the viscosity of the Brownian diffusion and convection. The analyses also suggest that a combination of particle aggregation and particle shape effects is the mechanism for the observed high-shear rheological behaviour, which is also supported by the thermal conductivity measurements and analyses.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Library of Congress Subject Headings (LCSH): | Rheology, Nanotubes, Nanofluids, Ethylene glycol, Titanates, Thermal conductivity | ||||
Journal or Publication Title: | Journal of Nanoparticle Research | ||||
Publisher: | Springer Netherlands | ||||
ISSN: | 1388-0764 | ||||
Official Date: | August 2009 | ||||
Dates: |
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Volume: | Vol.11 | ||||
Number: | No.6 | ||||
Number of Pages: | 8 | ||||
Page Range: | pp. 1513-1520 | ||||
DOI: | 10.1007/s11051-009-9599-9 | ||||
Status: | Not Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||
Grant number: | EP/E00041X/1 (EPSRC), EP/F015380/1 (EPSRC) |
Data sourced from Thomson Reuters' Web of Knowledge
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