scispace - formally typeset
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
Book

Investigation of Fundamental Properties of Nanorefrigerants

TL;DR: In this paper, the authors present a pioneering work about nanorefrigerants where microstructures, some fundamental thermophysical properties (thermal conductivity, viscosity and density) and migration properties during pool boiling heat transfer are analyzed.
Book ChapterDOI

Mass transfer mechanisms in nanofluids

TL;DR: In this paper, the authors tried to explain the mass transfer mechanisms in the presence of nanofluids in the simplest and most understandable way possible, which can be considered as the main source of increased mass transfer in the nano-fluids.

Experimental and numerical investigation on the impact of nanoparticles in the development of thermosyphon

TL;DR: In this article, the authors show that the conventional characteristics to look at to choose a particle are no more the same for a phenomenon such as thermosyphon, compared to the low conductive Lithium Hydroxide in this configuration.
Proceedings ArticleDOI

Investigation of the effect of Brownian motion on the flow characteristics in natural convection using different nanofluids

TL;DR: In this paper, the effect of the Brownian motion on the fluid flow and heat transfer performance using various nanofluids in a natural convection in square enclosure was investigated.
Journal ArticleDOI

Turbulent natural convection heat transfer enhancement of nanofluids

TL;DR: In this paper , the authors investigated the enhancement of heat transfer for the fluid with the addition of nano-particles in a two-dimensional rectangular cavity, and derived a heat transfer correlation in terms of the Nusselt number (Nu) average as a function of Grashoff number and volume fraction of the nano particles in the base fluid for the turbulent flow.
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

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

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)