Journal ArticleDOI
Rheological behaviour of nanofluids: A review
TLDR
In this article, the influence of particle shape and shear rate range on rheological behavior of nanofluids has been discussed and other factors such as nanoparticle type, volumetric concentration in different base fluids, addition of surfactant and externally applied magnetic field have been investigated.Abstract:
A colloidal mixture of nanometre-sized (<100 nm) metallic and non-metallic particles in conventional fluid is called nanofluid. Nanofluids are considered to be potential heat transfer fluids because of their superior thermal and tribological properties. In recent period, nanofluids have been the focus of attention of the researchers. This paper presents a summary of a number of important research works that have been published on rheological behaviour of nanofluids. This review article not only discusses the influence of particle shape and shear rate range on rheological behaviour of nanofluids but also studies other factors affecting the rheological behaviour. These other factors include nanoparticle type, volumetric concentration in different base fluids, addition of surfactant and externally applied magnetic field. From the literature review, it has been found that particle shape, its concentration, shear rate range, surfactant and magnetic field significantly affect the rheological behaviour of any nanofluid. It has been observed that nanofluids containing spherical nanoparticles are more likely to exhibit Newtonian behaviour and those containing nanotubes show non-Newtonian flow behaviour. Furthermore, nanofluids show Newtonian behaviour at low shear rate values while behave as non-Newtonian fluid at high shear rate values. Authors have also identified the inadequacies in the research works so far which require further investigations.read more
Citations
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Journal ArticleDOI
A state of the art review on viscosity of nanofluids
TL;DR: In this paper, a comprehensive review of research and development on rheological characteristics of nanofluids for their advanced heat transfer applications is performed and reported in this paper, which identifies the research anomaly and importance on this topic besides analysing rheology of nanophluids.
Journal ArticleDOI
A comprehensive review on graphene nanofluids: Recent research, development and applications
Emad Sadeghinezhad,Mohammad Mehrali,Rahman Saidur,Mehdi Mehrali,Sara Tahan Latibari,Amir Reza Akhiani,Hendrik Simon Cornelis Metselaar +6 more
TL;DR: An overview of experimental results about the heat transfer capabilities of graphene nanofluids is reviewed in this paper, where a number of publications are available on this issue and only few studies provide quantitative estimates on a complete set of experimental conditions so far.
Journal ArticleDOI
An experimental investigation of SiC nanofluid as a base-fluid for a photovoltaic thermal PV/T system
Ali H.A. Al-Waeli,Kamaruzzaman Sopian,Miqdam T. Chaichan,Hussein A. Kazem,Husam Abdulrasool Hasan,Ali Najah Al-Shamani +5 more
TL;DR: In this paper, the thermophysical properties of nanofluid composed of water and SiC nanoparticles without the use of a surfactant as a coolant for a PV/T system was investigated.
Journal ArticleDOI
Graphene based nanofluids and nanolubricants – Review of recent developments
TL;DR: An overview of the remarkable research progress on graphene-based nanofluids and nanolubricants witnessed in the recent years is presented in this article, where the authors highlight various synthesis methods, characterization techniques and properties measurement procedures that have been experimented and developed.
Journal ArticleDOI
Effect of particle size on the viscosity of nanofluids: A review
Halil Dogacan Koca,Serkan Doganay,Alpaslan Turgut,Ismail H. Tavman,Rahman Saidur,Rahman Saidur,I.M. Mahbubul +6 more
TL;DR: In this paper, experimental studies considering the particle size effect on the viscosity of the nanofluid have been reviewed, and the results indicate that there is a discrepancy about the effect of particle size on the viscous properties of the nanoparticles.
References
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Journal ArticleDOI
Investigation on Convective Heat Transfer and Flow Features of Nanofluids
Yimin Xuan,Qiang Li +1 more
TL;DR: In this article, an innovative new class of heat transfer fluids can be engineered by suspending metallic nanoparticles in conventional heat-transfer fluids, which are expected to exhibit high thermal conductivities compared to those of currently used heat transfer fluid, and they represent the best hope for enhancing heat transfer.
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Anomalously increased effective thermal conductivities of ethylene glycol-based nanofluids containing copper nanoparticles
TL;DR: In this paper, it was shown that a "nanofluid" consisting of copper nanometer-sized particles dispersed in ethylene glycol has a much higher effective thermal conductivity than either pure or pure glycol or even polyethylene glycol containing the same volume fraction of dispersed oxide nanoparticles.
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Anomalous thermal conductivity enhancement in nanotube suspensions
TL;DR: In this paper, the authors have produced nanotube-in-oil suspensions and measured their effective thermal conductivity, which is anomalously greater than theoretical predictions and is nonlinear with nanotubes loadings.
Journal ArticleDOI
Temperature dependence of thermal conductivity enhancement for nanofluids
TL;DR: In this article, the authors investigated the increase of thermal conductivity with temperature for nano fluids with water as base fluid and particles of Al 2 O 3 or CuO as suspension material.
Journal ArticleDOI
Thermal Conductivity of Nanoparticle -Fluid Mixture
TL;DR: In this paper, the authors measured the effective thermal conductivity of mixtures of Al 2O3 and CuO, dispersed in water, vacuum pump, engine oil, and ethylene glycol.