Journal
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
Volume 74, Issue -, Pages 108-113Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.icheatmasstransfer.2016.02.008
Keywords
Viscosity; SWCNTs/EG nanofluid; Correlation; Newtonian behavior
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Funding
- Research Chair Grant National Science and Technology Development Agency
- Thailand Research Fund
- National Research University Project
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This paper includes an examination of the dynamic viscosity of single-wall carbon nanotubes (SWCNT5) in ethylene glycol (EG) at temperatures ranging from 30 degrees C to 60 degrees C for various suspensions at solid volume fractions of 0.0125%, 0.025%, 0.05%, 0.075%, and 0.1%. Experimental findings revealed that SWCNTs/EG nanofluid behaves as a Newtonian fluid at solid volume fractions of 0.1% and at all considered temperatures. The measurements also indicated that dynamic viscosity increases with increasing solid volume fraction and decreases with increasing temperature. Moreover, relative viscosity results showed that that the viscosity of the nanofluid increases to 3.18 times that of the base fluid at a temperature of 30 degrees C and a solid volume fraction of 0.1%. Finally, using experimental data to estimate the dynamic viscosity of SWCNTs/EG nanofluid, a new correlation with acceptable accuracy was suggested. (C) 2016 Elsevier Ltd. All rights reserved.
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