Journal ArticleDOI
Natural convection of nano-fluids
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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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Dissertation
Experimental investigation into the evaporating behaviour of pure and nanofluid droplets.
Dissertation
Coupling of nanofluid flow, heat transfer and nanoparticles sedimentation using OpenFOAM
TL;DR: In this article, the authors investigated the relationship between nanofluid flow, heat transfer and nanoparticles sedimentation, and developed several numerical solvers in multi-phase way for the first time.
Journal ArticleDOI
Use of Ultrasound Thermometry to Study Natural Convection in Opaque Nanofluids
Kaufui V. Wong,Bradley L. Bon +1 more
TL;DR: In this paper, the effects of the mass fraction concentration of nanoparticles, the enclosure aspect ratio, and the inclination have been studied experimentally, but more could be done, as the opacity of nanofluids does not permit the use of particle image velocimetry, laser induced fluorescence, or any other means of flow visualization or visual temperature measurement of the local fluid temperature.
Journal ArticleDOI
A simple homogeneous numerical solution for nanofluid natural convection in an enclosure with disconnected and conducting solid blocks
TL;DR: In this article, a simple homogeneous modeling for natural convection of nanofluids is proposed, which allows a custom choice of correlations for the nanophotonics properties, which proved to be very convenient in validations carried out for the case of laminar convection inside a clear enclosure.
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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