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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MHD stagnation point flow and heat transfer due to nanofluid towards a stretching sheet
Wubshet Ibrahim,Wubshet Ibrahim,Bandari Shankar,Bandari Shankar,Mahantesh M. Nandeppanavar,Mahantesh M. Nandeppanavar +5 more
TL;DR: In this article, the effect of magnetic field on stagnation point flow and heat transfer due to nanofluid towards a stretching sheet was analyzed using Runge-Kutta fourth order method with shooting technique.
Journal ArticleDOI
An experimental investigation on the effect of pH variation of MWCNT–H2O nanofluid on the efficiency of a flat-plate solar collector
TL;DR: In this paper, the effect of pH variation of MWCNT-H 2 O nanofluid on the efficiency of a flat-plate solar collector was investigated experimentally.
Journal ArticleDOI
A model of thermal conductivity of nanofluids with interfacial shells
Qingzhong Xue,Wen-Mei Xu +1 more
TL;DR: In this article, the authors derived an expression for the effective thermal conductivity of nanofluids with interfacial shells, and compared with conventional models, the expression is not only depended on the thermal conductivities of the solid and liquid and their relative volume fraction, but also depended on particle size and interfacial properties.
Journal ArticleDOI
Investigation of thermal and electrical conductivity of graphene based nanofluids
TL;DR: In this paper, the synthesis of highly stable exfoliated graphene based nanofluids with water and ethylene glycol as base fluids with out any surfactant and subsequent studies on their thermal and electrical conductivities.
Journal ArticleDOI
Effect of partial slip boundary condition on the flow and heat transfer of nanofluids past stretching sheet prescribed constant wall temperature
TL;DR: In this paper, the effects of slip boundary condition in the presence of dynamic effects of nano particles have not been investigated yet, and the results of the present paper show the flow velocity and the surface shear stress on the stretching sheet and also reduced Nusselt number and reduced Sherwood number are strongly influenced by the slip parameter.
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.
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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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