Influences of Temperature, Concentration and Shear Rate on Rheological Behavior of Nanofluid: An Experimental Study with Al2O3-MWCNT/10W40 Hybrid Nano-Lubricant
In this experimental study, the rheological behavior of Al2O3-MWCNT (90%:10%)/10W40 hybrid nano-lubricant has been determined at the temperature range of 5°C to 55°C. Al2O3 nanoparticles (average size of 50 nm) and MWCNTs (inner and outer diameter of 2-6 nm and 5-20 nm, respectively) were dispersed...
Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
2019-06-01
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Series: | Iranian Journal of Chemistry & Chemical Engineering |
Subjects: | |
Online Access: | http://www.ijcce.ac.ir/article_37189_a858a131d0da7d486021530887f57ba2.pdf |
Summary: | In this experimental study, the rheological behavior of Al2O3-MWCNT (90%:10%)/10W40 hybrid nano-lubricant has been determined at the temperature range of 5°C to 55°C. Al2O3 nanoparticles (average size of 50 nm) and MWCNTs (inner and outer diameter of 2-6 nm and 5-20 nm, respectively) were dispersed in engine oil (10W40) to prepare 0.05%, 0.1%, 0.25%, 0.5%, 0.75% and 1% solid volume fractions. For each sample, dynamic viscosity was measured at shear rates ranging from 666.5 s-1 to 13330 s-1 with an uncertainty of about 0.6%. The findings insinuated that at the most range of temperature and solid volume fraction the nano-lubricant, as well as the base oil, are non-Newtonian fluids. Thus, by curve fitting the indexes of power law and consistency were calculated. Eventually, the correlations indicated a very well compromise with experimental data. |
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ISSN: | 1021-9986 1021-9986 |