Journal ArticleDOI
Anomalous thermal conductivity enhancement in nanotube suspensions
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TLDR
In this paper, the authors have produced nanotube-in-oil suspensions and measured their effective thermal conductivity, which is anomalously greater than theoretical predictions and is nonlinear with nanotubes loadings.Abstract:
We have produced nanotube-in-oil suspensions and measured their effective thermal conductivity. The measured thermal conductivity is anomalously greater than theoretical predictions and is nonlinear with nanotube loadings. The anomalous phenomena show the fundamental limits of conventional heat conduction models for solid/liquid suspensions. We have suggested physical concepts for understanding the anomalous thermal behavior of nanotube suspensions. In comparison with other nanostructured materials dispersed in fluids, the nanotubes provide the highest thermal conductivity enhancement, opening the door to a wide range of nanotube applications.read more
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Effects of temperature and volume concentration on thermal conductivity of TiO2-MWCNTs (70-30)/EG-water hybrid nano-fluid
TL;DR: In this paper, an empirical study on the effects of temperature and volume concentration of nanoparticles on the thermal conductivity of T i O 2 -MWCNTs/EG-water hybrid nano-fluid is examined.
Journal ArticleDOI
Velocity, thermal and concentration slip effects on a magneto-hydrodynamic nanofluid flow
TL;DR: In this article, the authors examined the magneto-hydrodynamic (MHD) flow of nanofluid bounded by a stretching surface, and the involved differential systems are solved for the velocity, temperature and mass fraction.
Journal ArticleDOI
Convective heat transfer and MHD effects on two dimensional wall jet flow of a nanofluid with passive control model
TL;DR: In this paper, the authors considered the problem of two dimensional convective laminar wall jet flow of a viscous nanofluid and employed a well-known effective numerical scheme Runge-Kutta-Fehlberg method.
Journal ArticleDOI
Shape effects of spherical and nonspherical nanoparticles in mixed convection flow over a vertical stretching permeable sheet
TL;DR: In this article, two-dimensional heat transfer mixed convection flow of a nanofluid over a vertical stretching permeable sheet is investigated, where simultaneous effects of spherical and nonspherical shapes of nanoparticles with different sizes in nanolayer are taken into account.
Journal ArticleDOI
Effect of magnetic field and thermal radiation on natural convection in a square cavity filled with TiO2 nanoparticles using Tiwari-Das nanofluid model
TL;DR: In this article , a finite difference method is implemented to solve the governing non-linear partial differential equations representing momentum and temperature equations, which shows that the temperature of TiO2-EG nanofluid escalates inside the cavity with higher values of (M).
References
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Journal ArticleDOI
Helical microtubules of graphitic carbon
TL;DR: Iijima et al. as mentioned in this paper reported the preparation of a new type of finite carbon structure consisting of needle-like tubes, which were produced using an arc-discharge evaporation method similar to that used for fullerene synthesis.
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.
Book
Physical properties of carbon nanotubes
TL;DR: In this paper, an introductory textbook for graduate students and researchers from various fields of science who wish to learn about carbon nanotubes is presented, focusing on the basic principles behind the physical properties and giving the background necessary to understand the recent developments.
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
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