A novel comparative experimental study on rheological behavior of mono & hybrid nanofluids concerned graphene and silica nano-powders: Characterization, stability and viscosity measurements
| Autor: | Iman Kazemi, Masoud Afrand, Mohammad Sefid |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Shear thinning Graphene General Chemical Engineering Nanoparticle 02 engineering and technology 021001 nanoscience & nanotechnology law.invention Shear (sheet metal) Viscosity Nanofluid 020401 chemical engineering Rheology Chemical engineering law Nano 0204 chemical engineering 0210 nano-technology |
| Zdroj: | Powder Technology. 366:216-229 |
| ISSN: | 0032-5910 |
| DOI: | 10.1016/j.powtec.2020.02.010 |
| Popis: | This paper explores a hybrid- and two mono-nanofluids and, to be more specific, it deals with the effect of adding Silica (SiO2) and Graphene (G) nanoparticles and their hybrid (G (30%) + SiO2 (70%)) on viscosity of water. For all designed hybrid- and mono-nanofluids at various concentrations of 0.05–1%, viscosity was measured under the influence of temperature (25–50 °C). Meanwhile, for measuring the viscosity, different shear rates (12.23–122.3 s−1) have been applied to evaluate rheological behavior of nanofluids. The viscosity of hybrid nanofluids lies between the viscosity of mono nanofluids, while G/Water mono-nanofluid samples have the highest value. Experimental results revealed non-Newtonian pseudoplastic behavior for all three types of nanofluids, this behavior is more evident in the G/Water mono-nanofluid. Moreover, G-SiO2(30–70%)/Water hybrid nanofluid has a higher tendency to the behavior of SiO2/Water mono-nanofluid. Finally, via curve fitting method, two-variable correlations were proposed to estimate rheological behavior of G-SiO2(30–70%)/Water hybrid nanofluid. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect