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Viscosity of carbon nanotubes water based nanofluids: Influence of concentration and temperature

Abstract : Experimental results on the steady-state viscosity of carbon nanotubes water-based nanofluids are presented considering the influence of particle volume fraction and temperature ranging from 0 to 40 C. The suspensions consist of multi-walled carbon nanotubes dispersed in de-ionized water and they are stabilized by a surfactant. The aspect ratio of nanotubes is close to 160 and the particle volume fraction varies between 0.0055% and 0.55%. It is shown that the nanofluids behave as shear-thinning materials for high particle content. For lower particle content, the nanofluids are quite Newtonian. It is also observed that the relative viscosity of nanofluids at high shear rate does not vary with temperature. Moreover, the evolution of relative viscosity at high shear rate is well predicted by the Maron-Pierce model considering the effect of nanoparticles agglomerates.
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Submitted on : Monday, May 13, 2013 - 9:27:26 AM
Last modification on : Tuesday, January 12, 2021 - 4:50:19 PM
Long-term archiving on: : Wednesday, August 14, 2013 - 4:10:27 AM

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Salma Halelfadl, Patrice Estellé, Bahadir Aladag, Nimeti Doner, Thierry Maré. Viscosity of carbon nanotubes water based nanofluids: Influence of concentration and temperature. International Journal of Thermal Sciences, Elsevier, 2013, 71, pp.111-117. ⟨10.1016/j.ijthermalsci.2013.04.013⟩. ⟨hal-00821792⟩

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