Viscosity and Rheological Properties of Graphene Nanopowders Nanofluids
Article dans une revue avec comité de lecture
Author
Abstract
The dynamic viscosity and rheological properties of two different non-aqueous graphene nano-plates-based nanofluids are experimentally investigated in this paper, focusing on the effects of solid volume fraction and shear rate. For each nanofluid, four solid volume fractions have been considered ranging from 0.1% to 1%. The rheological characterization of the suspensions was performed at 20°C, with shear rates ranging from 10⁻¹ s⁻¹ to 10³s⁻¹, using a cone-plate rheometer. The Carreau–Yasuda model has been successfully applied to fit most of the rheological measurements. Although it is very common to observe an increase of the viscosity with the solid volume fraction, we still found here that the addition of nanoparticles produces lubrication effects in some cases. Such a result could be very helpful in the domain of heat extraction applications. The dependence of dynamic viscosity with graphene volume fraction was analyzed using the model of Vallejo et al.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureBAO, Jianhong; HEYD, Rodolphe;
REGNIER, Gilles;
AMMAR, Amine;
PEIXINHO, Jorge (Springer Science and Business Media LLC, 2023-09)
This paper reports the results of an experimental investigation of graphene particle suspensions in lubricating oil, ethylene glycol and glycerol-based fluids. Graphene particles of different specific surface area show ... -
Article dans une revue avec comité de lectureEnhancing thermal conductivity of simple fluids is of major interest in numerous applicative systems. One possibility of enhancing thermal properties consists of dispersing small conductive particles inside. However, in ...
-
Article dans une revue avec comité de lectureNASRI, Mohamed Aziz; ROBERT, Camille;
MOREL, Franck;
EL AREM, Saber;
AMMAR, Amine (Elsevier Masson, 2018)
The numerical modelling of the behaviour of materials at the microstructural scale has been greatly developed over the last two decades. Unfortunately, conventional resolution methods cannot simulate polycrystalline ... -
Communication avec acteNASRI, Mohamed Aziz; CHINESTA, Francisco; ROBERT, Camille;
MOREL, Franck;
EL AREM, Saber;
AMMAR, Amine (Springer, 2016)
Forming processes usually involve irreversible plastic transformations. The calculation in that case becomes cumbersome when large parts and processes are considered. Recently Model Order Reduction techniques ... -
Communication sans actenone