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Keywords: nanoparticles
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Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. March 2024, 146(3): 033001.
Paper No: HT-23-1202
Published Online: December 22, 2023
...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...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. August 2020, 142(8): 082501.
Paper No: HT-18-1138
Published Online: June 8, 2020
... ) 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...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. April 2019, 141(4): 044501.
Paper No: HT-18-1399
Published Online: February 25, 2019
..., 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...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. July 2015, 137(7): 072301.
Paper No: HT-13-1601
Published Online: March 24, 2015
.... 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...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. November 2012, 134(11): 114503.
Published Online: September 28, 2012
... 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...
Journal Articles
Publisher: ASME
Article Type: Melting And Solidification
J. Heat Mass Transfer. September 2012, 134(9): 092301.
Published Online: July 2, 2012
... 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...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. April 2012, 134(4): 042501.
Published Online: February 15, 2012
... 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...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. April 2012, 134(4): 041302.
Published Online: February 13, 2012
... 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...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. January 2012, 134(1): 012401.
Published Online: November 21, 2011
... 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...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. November 2011, 133(11): 111501.
Published Online: August 31, 2011
.... 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...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. May 2011, 133(5): 051401.
Published Online: February 4, 2011
...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...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. May 2011, 133(5): 054503.
Published Online: February 2, 2011
...) 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...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. April 2011, 133(4): 042402.
Published Online: January 11, 2011
...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...
Journal Articles
Publisher: ASME
Article Type: Review Articles
J. Heat Mass Transfer. April 2011, 133(4): 040801.
Published Online: January 10, 2011
... 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...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. March 2011, 133(3): 031009.
Published Online: November 16, 2010
..., 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...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. February 2011, 133(2): 024501.
Published Online: November 2, 2010
...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...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. November 2010, 132(11): 111201.
Published Online: August 10, 2010
... 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...