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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Exact solutions for Stokes' Flow of a non-Newtonian nanofluid model: a Lie Similarity approach
TL;DR: In this article, the Stokes model is considered in which the flow is generated due to the motion of the plate in its own plane with an impulsive velocity, and the Lie symmetry approach is utilised to convert the governing nonlinear partial differential equation into different linear and nonlinear ordinary differential equations.
Journal ArticleDOI
Improved performance of a nanorefrigerant-based vapor compression refrigeration system: A new alternative:
Lal Kundan,Kuljeet Singh +1 more
TL;DR: In this article, an attempt has been made to improve the heat transfer characteristics of the vapor compression refrigeration cycle using nanorefrigerant (R134a and Al2O3, size 20nm).
Journal ArticleDOI
Dissipative particle dynamics investigation of heat transfer mechanisms in Al2O3-water nanofluid
TL;DR: In this paper, the effect of nanoparticles on the heat transfer mechanism in natural convection using Al2O3-water nanofluids was investigated in detail, where the authors applied dissipative particle dynamics (DPD) approach to investigate the effect.
Journal ArticleDOI
The interfacial nanolayer role on magnetohydrodynamic natural convection of an Al2O3-water nanofluid
Lefteris Benos,Ioannis E. Sarris +1 more
TL;DR: In this paper, the laminar steady-state two-dimensional magnetohydrodynamic natural convection within a shallow enclosure was analyzed and the latter was filled with an Al2O3-water nanofluorescence.
Journal ArticleDOI
MHD natural convection in a nanofluid-filled cavity with linear temperature distribution
TL;DR: The results show that the heat transfer and fluid flow depends strongly upon the direction of magnetic field, and according to the Hartmann number, it observed that the magnetic field direction controls the effects of nanoparticles.
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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