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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Enhancement of natural convection heat transfer in a square cavity using MWCNT/Water nanofluid: an experimental study
TL;DR: In this article, a square enclosure of dimensions (40 × 40 × 200) mm is used as test section and a comparison of Al2O3/Water and MWCNT/Water nanofluid have been made for different volume fractions and for various range of Rayleigh numbers.
Journal ArticleDOI
Nanofluid forced convection in entrance region of a baffled channel considering nanoparticle migration
TL;DR: In this paper, a forced convection flow of Al2O3-water nanofluid in the entrance region of a two-dimensional baffled channel is numerically investigated, where a constant heat flux is imposed on the channel wall and a scalar equation is added to conservation equations to determine nanoparticle distribution throughout the channel.
Journal ArticleDOI
Chemical Reaction and Uniform Heat Generation or Absorption Effects on MHD Stagnation-Point Flow of a Nanofluid over a Porous Sheet
TL;DR: In this paper, the authors analyzed the chemical reaction and heat generation or absorption effects on MHD stagnation-point flow of a nanofluid over a porous stretching sheet, where the uniform magnetic field strength B was applied in the direction normal to the flow.
Journal ArticleDOI
Rayleigh–Benard convection in water-based alumina nanofluid: A numerical study
TL;DR: In this article, the effect of nanoparticles on the onset of instability in R-B convection in water-based alumina (Al2O3) nanofluid is analyzed based on a single component non-homogeneous volume fraction model (SCNHM) using the lattice Boltzmann method (LBM).
Journal ArticleDOI
Flow in open C-shaped cavities: How far does the change in boundaries affect nanofluid?
TL;DR: In this paper, numerical modeling for natural convection in partially C-shape open ended enclosure filled with nanofluid has been performed, and the authors have noticed that the importance of open regions and its locations along the boundaries.
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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