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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Journal ArticleDOI
Modeling the natural convective flow of micropolar nanofluids
TL;DR: In this article, a micropolar model for nanofluidic suspensions is proposed in order to investigate theoretically the natural convection of nano-fluid fluids, and the validity of the model is depicted by comparing the numerical results obtained with available experimental and theoretical data.
Journal ArticleDOI
Computer simulations of natural convection of single phase nanofluids in simple enclosures: A critical review
Omid Abouali,Goodarz Ahmadi +1 more
TL;DR: In this article, the authors show that the internal convection of single phase nanofluids in enclosures can be easily predicted theoretically with no need to perform a numerical simulation provided that a reliable Nusselt number correlation for clear fluids in these enclosures is available.
Journal ArticleDOI
Numerical study of two phase laminar mixed convection nanofluid in elliptic ducts
TL;DR: In this paper, the effects of solid volume fraction, aspect ratio and buoyancy forced on thermal and hydraulics behaviors of nanofluid flow in elliptic ducts have been presented and discussed.
Journal ArticleDOI
Numerical investigations of laminar heat transfer and flow performance of Al2O3–water nanofluids in a flat tube
TL;DR: In this paper, a three-dimensional numerical analysis is presented to study the laminar heat transfer and flow characteristics of Al2O3-water nanofluids through a flat tube at constant heat flux boundary condition.
Journal ArticleDOI
Heat Transfer Properties of Nanodiamond–Engine Oil Nanofluid in Laminar Flow
TL;DR: In this article, the effects of utilizing nanodiamond as an additive to engine oil on the heat transfer enhancement in laminar pipe flow were investigated, and the results clearly indicate the heat-transfer enhancement due to the presence of nanoparticles in the fluid.
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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