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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Effect of chevron angle on heat transfer performance in plate heat exchanger using ZnO/water nanofluid
TL;DR: In this paper, the effect of different chevron angles in PHE on heat transfer rate ratio, heat transfer coefficient ratio, overall heat transfer ratio, pumping power ratio, performance index ratio, exergy loss, qualitative response of system by exergetic efficiency, total entropy generation and contribution of irreversible heat transfer arises due to frictional losses by Bejan number.
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Numerical investigation of natural convection of Al 2 O 3 nanofluid in vertical annuli
Omid Abouali,Ahmad Falahatpisheh +1 more
TL;DR: In this article, the authors presented the numerical study of internal free convection of Al2O3 water nanofluid in vertical annuli, where vertical walls are maintained at constant temperatures and horizontal walls are adiabatic.
Journal ArticleDOI
MHD boundary layer flow of a power-law nanofluid with new mass flux condition
Masood Khan,Waqar Azeem Khan +1 more
TL;DR: In this article, an analysis is carried out to study the magnetohydrodynamic MHD boundary layer flow of power-law nanofluid over a non-linear stretching sheet.
Journal ArticleDOI
Lattice Boltzmann simulation of alumina-water nanofluid in a square cavity
TL;DR: Numerical results indicate that the flow and heat transfer characteristics of Al2O3-water nanofluid in the square cavity are more sensitive to viscosity than to thermal conductivity.
Journal ArticleDOI
Pool boiling heat transfer of functionalized nanofluid under sub-atmospheric pressures
Xue-Fei Yang,Zhen-Hua Liu +1 more
TL;DR: In this article, a water-based functionalized nanofluid was made by surface functionalizing the ordinary silica nanoparticles, and the functionalized nanoparticles were water-soluble and could still keep dispersing well even at the mass concentration of 10% and no sedimentation was observed.
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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