Journal ArticleDOI
Natural convection of nano-fluids
Reads0
Chats0
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
More filters
Journal ArticleDOI
Numerical investigation of natural convection heat transfer of nanofluids in a Γ shaped cavity
Resam Dehnavi,Abdollah Rezvani +1 more
TL;DR: In this paper, the heat transfer and fluid flow of natural convection in a Γ shaped enclosure filled with Al2O3/Water nanofluid that operates under differentially heated walls were analyzed.
Journal ArticleDOI
Lie group analysis of flow and heat transfer of non-Newtonian nanofluid over a stretching surface with convective boundary condition
TL;DR: In this article, the steady two-dimensional flow and heat transfer of a non-Newtonian power-law nanofluid over a stretching surface under convective boundary conditions and temperature-dependent fluid viscosity has been numerically investigated.
Journal ArticleDOI
Numerical Study of Pressure Drop and Thermal Characteristics of Al2O3–Water Nanofluid Flow in Horizontal Annuli
TL;DR: In this article, the results of numerical study of the mixed convection heat transfer of Al2O3-water nanofluid in a horizontal annuli are presented, where steady laminar flows in symmetric configurations are considered.
Journal ArticleDOI
Influence of the geometry of cylindrical enclosure on natural convection heat transfer of Newtonian nanofluids
TL;DR: In this article, the effect of inclination angle and aspect ratio (AR) on the heat transfer of two Newtonian nanofluids with different concentrations (0.1, 0.2, 0.5, 1, and 1.5 ) was investigated in an isolated cylindrical enclosure.
Proceedings ArticleDOI
Convection heat transfer of functionalized MWNT in aqueous fluids in laminar and turbulent flow at the entrance region
TL;DR: In this article, the effect of some factors such as mass fraction, temperature, and various velocity were selected and the effects of these parameters on the convective heat transfer coefficients in the water based fluids are discussed.
References
More filters
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.
Related Papers (5)
Investigation on Convective Heat Transfer and Flow Features of Nanofluids
Yimin Xuan,Qiang Li +1 more
Hydrodynamic and heat transfer study of dispersed fluids with submicron metallic oxide particles
Bock Choon Pak,Young I. Cho +1 more