Journal ArticleDOI
Natural convection of nano-fluids
TLDR
In this article, an apparently paradoxical behaviour of heat transfer deterioration was observed in nano-fluid and its dependence on parameters such as particle concentration, material of the particles and geometry of the containing cavity have been investigated.Abstract:
Fluids with nano size solid particles suspended in them have been given the name nano-fluid which in recent studies have shown tremendous promise as heat transfer fluids. However, before suggesting such fluids for applications a thorough knowledge of physical mechanism of heat transfer in such fluids is wanted. The present study deals with one such aspect of natural convection of nano fluids inside horizontal cylinder heated from one end and cooled from the other. An apparently paradoxical behaviour of heat transfer deterioration was observed in the experimental study. Nature of this deterioration and its dependence on parameters such as particle concentration, material of the particles and geometry of the containing cavity have been investigated. The fluid shows characters distinct from that of common slurries.read more
Citations
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Journal ArticleDOI
Free convection heat transfer of non Newtonian nanofluids under constant heat flux condition
TL;DR: In this article, two different kinds of non-Newtonian nanofluids were prepared by dispersion of Al 2 O 3 and TiO 2 nanoparticles in a 0.5-wt.
Journal ArticleDOI
Effects of Thermodiffusion and Nanoparticles on Convective Instabilities in Binary Nanofluids
TL;DR: In this article, the effects of the Soret effect on the convective instabilities of a binary nanofluid is theoretically investigated and a new stability criterion is obtained based on the linear stability theory and new factors g and f are proposed.
Journal ArticleDOI
Thermal conductivity and heat transfer of ceramic nanofluids
TL;DR: In this paper, it was shown that heat transfer can be enhanced by nanofluids in the thermal entrance region of laminar pipe flow using a simple but well defined test rig.
Journal ArticleDOI
Experimental investigation toward obtaining a new correlation for viscosity of WO3 and Al2O3 nanoparticles-loaded nanofluid within aqueous and non-aqueous basefluids
TL;DR: In this article, the effect of temperature and mass fraction of Al2O3 and WO3 nanoparticles dispersed in deionized water and liquid paraffin was investigated on dynamic viscosity of nanofluid.
Journal ArticleDOI
Transformer oil-based nanofluid: The application of nanomaterials on thermal, electrical and physicochemical properties of liquid insulation-A review
TL;DR: It is discovered that appropriate characterization of NFs may result in superior heat transfer fluids compared to conventional base fluids, and more extreme exploration is required towards the suitable selection of NPs, their synthesis, characterization and long-term stability.
References
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Book
A Treatise on Electricity and Magnetism
TL;DR: The most influential nineteenth-century scientist for twentieth-century physics, James Clerk Maxwell (1831-1879) demonstrated that electricity, magnetism and light are all manifestations of the same phenomenon: the electromagnetic field as discussed by the authors.
Journal ArticleDOI
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.
Journal ArticleDOI
Thermal Conductivity of Heterogeneous Two-Component Systems
R. L. Hamilton,O. K. Crosser +1 more
Journal ArticleDOI
Measuring Thermal Conductivity of Fluids Containing Oxide Nanoparticles
TL;DR: In this paper, a transient hot-wire method was used to measure the thermal conductivity of a small amount of nanoparticles and the experimental results showed that these nanoparticles have substantially higher thermal conductivities than the same liquids without nanoparticles.
Journal ArticleDOI
Conceptions for heat transfer correlation of nanofluids
Yimin Xuan,Wilfried Roetzel +1 more
TL;DR: In this article, the authors proposed two different approaches for deriving heat transfer correlation of the nanofluid, and investigated the mechanism of heat transfer enhancement of the nano-fluid.
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