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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Exploitation of Thermal Properties of Fluids Embedded with Nanostructured Materials
TL;DR: In this paper, an empirical correlation for Al 2 O 3 + water and Cu + water nanofluids to evaluate thermal conductivity and Nusselt number in forced convective internal flow are developed considering the effect of temperature, volume fraction and size of nanoparticle.
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Optimization of free convection heat transfer from vertical plates using nanofluids
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Transient nanofluid flow and energy dissipation from wavy surface using magnetic field and two rotating cylinders
TL;DR: In this paper, the authors investigated the effect of transient magnetohydrodynamic (MHD) combined convection within a wavy-heated rectangular cavity having two inner cylinders using the non-homogeneous nanofluid scheme.
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Thermal Performance Analysis of Nanofluid Thermal Conductivity Models in a Cooling Chamber
TL;DR: In this paper, the numerical modeling of mixed convection heat transfer in two-dimensional double lid-driven cavity filled with alumina-water nanofluid was performed using a second-order central finite-difference scheme, coupled with the conservation of mass and energy.
Journal ArticleDOI
Natural Convective Boundary Layer Flow of Nanofluids Above an Isothermal Horizontal Plate
TL;DR: In this article, the natural convective boundary layer flow of a nanofluid over an isothermal horizontal plate is studied analytically, and the analysis shows that the velocity, temperature, and nanoparticle volume fraction profiles in the respective boundary layers depend not only on the Prandtl number (Pr) and Lewis number (Le), but also on three additional dimensionless parameters: the Brownian motion parameter Nb, the buoyancy ratio parameter Nr and the thermophoresis parameter Nt.
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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