Journal
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
Volume 76, Issue -, Pages 133-138Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.icheatmasstransfer.2016.05.015
Keywords
Rheological behavior; Hybrid nano-lubricant; SiO2; MWCNT
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Funding
- High Impact Research grant [UM.C/HIR/MOHE/ENG/23]
- University of Malaya, Malaysia
- Ministry of Science and Technology, R.O.C. [MOST 103-2221-E-027-107-MY2]
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In this work, effects of temperature and solid volume fraction on rheological behaviors of MWCNTs/SiO2-SAE40 hybrid nano-lubricant were examined. The experiments were performed at the temperatures ranging from 25 degrees C to 50 degrees C and solid volume fractions of 0%, 0.0625%, 0.125%, 0.25%, 0.5%, 0.75%, 1%, 15% and 2%. Measured results indicated that the nano-lubricant exhibit Newtonian behavior at the solid volume fraction up to 1% and it is non Newtonian for solid volume fractions of 1.5% and 2%. Viscosity measurements also showed that the viscosity decreases with increasing temperature and rises with an increase in the solid volume fraction. Finally, the empirical correlation with acceptable accuracy has been proposed to predict the dynamic viscosity of MVIWCNT/SiO2-SAE40 hybrid nano-lubricants. (C) 2016 Elsevier Ltd. All rights reserved.
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