A New Models For Dynamic Viscosity of a MWCNTs-EG Nanofluid

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Abstract

This research is experimental study of emperature and volume fraction effects and provide a new model for nanofluid viscosity of Multi Wall Carbon Nano Tubes-Ethylene glycol. Multi Wall Carbon Nano Tubes viscosity with 1 to 2 nm diameter in Ethylene glycol is calculated at 30° C to 60° C and in the volume fractions of 0.025 to 0.3 using by viscometer. Type of viscometer is Brookfield and model is DV-I Prime. It is observed that the viscosity decreases while temperature is increasing and at high volume fractions the nanofluids, shows non-Newtonian properties. Because there has not been done studies on the nanofluids, new equation for the first time of viscosity is obtained and Einstein and Bachelor models are compared with empirical relationships and In addition to observing the similarities, a separate formula for the Newtonian offered. It should be noted that non-Newtonian case study in this paper is not considered.

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References

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Journal of Solid and Fluid Mechanics
Volume 6, Issue 1
March and April 2016
Pages 179-188

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