Journal
APPLIED THERMAL ENGINEERING
Volume 102, Issue -, Pages 45-54Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2016.04.002
Keywords
Viscosity; Hybrid nanofluid; SiO2 nanoparticles; MWCNTs; Engine oil
Funding
- Najafabad Branch, Islamic Azad University, Najafabad, Iran
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In this study, an experimental investigation on the effects of temperature and concentration of nanoparticles on the dynamic viscosity of SiO2-MWCNTsiengine oil (SAE40) hybrid nanofluid is presented. The experiments were performed in the solid volume fraction range of 0-1.0% and temperature ranging from 25 degrees C to 60 degrees C. Viscosity measurements showed that SiO2-MWCNTs/SAE40 hybrid nanofluid behaves as a Newtonian fluid at all considered solid volume fractions and temperatures. Experimental results also revealed that the dynamic viscosity enhances with an increase in the solid volume fraction and decreases with increasing temperature. Moreover, results indicated that the maximum enhancement of viscosity of the hybrid nanofluid was 37.4%. Finally, an accurate correlation with maximum deviation of 0.75% has been proposed to predict the dynamic viscosity of SiO2-MWCNTs/SAE40 hybrid nanofluids. (C) 2016 Elsevier Ltd. All rights reserved.
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