...Nitish Kumar; Pradyumna Ghosh; P. Shukla Pool boiling heat transfer performance has been evaluated on a binary oxide based nanoparticles coated surface. Electrophoretic deposition techniques were used for TiO 2 and Al 2 O 3 nanoparticles coatings on polished copper substrates. Four different...

... ) p   is the nanoparticles effective heat capacity, T h is the upper disk temperature, C is the concentration, α ∗ = k / ( ρ c ) f is the thermal diffusivity, D B is the coefficient of Brownian diffusion, k is the thermal...

..., it provides a base for the derivation of other EMTs which consider the geometry of inclusion(s). Due to Brownian motion, these nanoparticles tend to collide and form fractal aggregates. Nanofluids are a colloidal dispersion of solid nanoparticles in a continuous liquid matrix. Nanofluids are highly...

... online December 13, 2018. Assoc. Editor: Evelyn Wang. 22 06 2018 07 11 2018 29 nm CuO nanoparticles nanofluid heat transfer Hall effects Lorentz force thermoelectric In an electromagnetic field, combined effect of electric and magnetic forces on charged molecules...

.... The numerical model is based on the one-fluid mixture approach combined with the single-domain enthalpy porosity model for phase change, and it is implemented in fluent software package. The linear dependence of the liquidus and solidus temperatures with the concentration of the nanoparticles was assumed...

... of the size of the nanoparticles on the morphology of the solid–liquid interface and the evolving concentration field during solidification is reported. Combining a one-fluid-mixture approach with the single-domain enthalpy-porosity model for phase change and assuming a linear dependence of the liquidus...

... not accounted for in weighted average estimates significantly influence the thermal properties of the matrix. laser flash analyzer reactive materials nanoparticles thermal properties aluminum nanocomposites Reactive materials are defined here as a composite consisting of a metal fuel...

... investigation on freezing of NePCM in comparison to the base PCM are presented. A one-dimensional Stefan model was developed to study the unidirectional freezing of NePCM in a finite slab. Only the thermal energy equation was considered and the presence of static dispersed nanoparticles was modeled using...

... fluids rather than like conventional solid–liquid mixtures. This assumption implies that all the convective heat transfer correlations available in the literature for single-phase flows can be extended to nanoparticle suspensions, provided that the thermophysical properties appearing in them...

... and transmission electron microscopies. In order to investigate the influence of synthesis conditions on the thermal conductivity of composites, various concentrations of multiwall carbon nanotubes, graphites, surfactants, and polymer matrix materials as well as two different nanoparticles and solvents were tested...

... is about two times higher than that of melting with the same particle size. 12 02 2011 26 07 2011 21 11 2011 21 11 2011 evaporation gold high-speed optical techniques laser beam effects laser sintering melting nanoparticles particle size solidification laser...

.... Many studies have been done on the pool boiling characteristics of nanofluids, most of which have been with nanofluids containing oxide nanoparticles owing to the ease in their preparation. Deterioration in boiling heat transfer was observed in some studies. Metallic nanofluids having metal...

...W. Escher; T. Brunschwiler; N. Shalkevich; A. Shalkevich; T. Burgi; B. Michel; D. Poulikakos Nanofluids have been proposed to improve the performance of microchannel heat sinks. In this paper, we present a systematic characterization of aqueous silica nanoparticle suspensions with concentrations up...

...) and alumina ( Al 2 O 3 ) nanoparticles in the based fluid of water with the Prandtl number Pr = 7 to investigate the effect of the solid volume fraction parameter ϕ of the fluid and heat transfer characteristics. The skin friction coefficient, Nusselt number, and the velocity and temperature profiles...

...Dhruv Singh; Jayathi Y. Murthy; Timothy S. Fisher Phonon transport across constrictions formed by a nanowire or a nanoparticle on a substrate is studied by a numerical solution of the gray Boltzmann transport equation (BTE) resolving the effects of two length scales that govern problems...

... reasons for the experimental finding of significant conductivity enhancement include the nanoparticle Brownian motion, the Brownian-motion-induced convection, the liquid layering at the liquid-particle interface, and the nanoparticle cluster/aggregate. Although there is a lack of agreement regarding...

..., a consensus is lacking on if and how the dispersed nanoparticles alter the thermal transport in convective flows. In this work, an experimental investigation was conducted to study single-phase forced convection of Al 2 O 3 -water nanofluid in a circular minichannel with a 1.09 mm inner diameter. The friction...

...Donghyun Shin; Debjyoti Banerjee Silica nanoparticles (1% by weight) were dispersed in a eutectic of lithium carbonate and potassium carbonate (62:38 ratio) to obtain high temperature nanofluids. A differential scanning calorimeter instrument was used to measure the specific heat of the neat molten...

...Anilchandra Attaluri; Ronghui Ma; Liang Zhu Magnetic nanoparticles have been used in clinical and animal studies to generate localized heating for tumor treatments when the particles are subject to an external alternating magnetic field. Currently, since most tissue is opaque, the detailed...

... that involves a dispersion of high velocity alumina shell fragments and molten Al droplets that promote a pressure build-up by inducing a bulk movement of fluid. This mechanism unique to nanoparticle reaction may promote convection without the need for additional gas generation. In this study a Netszch STA...