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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Experimental study on the influence of the aspect ratio of square cavity on natural convection heat transfer with Al2O3/Water nanofluids
A. Brusly Solomon,A. Brusly Solomon,Josh van Rooyen,Martin Rencken,Mohsen Sharifpur,Josua P. Meyer +5 more
TL;DR: In this article, the Aspect Ratio (AR) of a rectangular cavity filled with nanofluids has been studied experimentally, and three different cavities with the AR of 1, 2 and 4 were fabricated, and the heat transfer performance was studied using two different fluids namely de-ionised water and Al 2 O 3 /Water nanoprocessor.
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Experimental investigation of graphene nanoplatelets–based minimum quantity lubrication in grinding Inconel 718:
TL;DR: In this paper, the performance of graphene nanoplatelets-based cutting fluid was evaluated in minimum quantity lubrication grinding of Inconel 718. The main objective of this paper is to assess the performance.
Journal ArticleDOI
Ultrasonication an intensifying tool for preparation of stable nanofluids and study the time influence on distinct properties of graphene nanofluids – a systematic overview
Madderla Sandhya,Madderla Sandhya,Devarajan Ramasamy,K. Sudhakar,Kumaran Kadirgama,Wan Sharuzi Wan Harun +5 more
TL;DR: In this paper, the effect of the sonication period on various physical and thermal properties based on ultrasonication/sonication time are illustrated. And it is found that increased power or time of ideal sonication increases the dispersion, leading to higher stable fluids, decreased particle size, higher thermal conductivity, and lower viscosity values.
Journal ArticleDOI
Buoyancy driven convection of nanofluids in an infinitely long channel under the effect of a magnetic field
TL;DR: In this article, the authors proposed a theoretical analysis to investigate buoyancy driven convection of nanofluids in an infinitely long channel under superimposed magnetic field and derived closed form analytical solutions for the magnetohydrodynamic flow and temperature field under two distinctive wall boundary conditions.
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Natural convection investigation in square cavity filled with nanofluid using dispersion model
TL;DR: In this paper, the authors used the finite element method to solve the governing equations of the hydrodynamic structure of the flow and its thermal behavior for a wide range of Rayleigh numbers.
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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