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Showing papers in "International Communications in Heat and Mass Transfer in 2015"


Journal ArticleDOI
TL;DR: In this article, the effect of nanoparticle volume fraction on thermal conductivity and dynamic viscosity of Ag-MgO/water hybrid nanofluid with the particle diameter of 40(mgO) and 25(Ag) nm was investigated.

461 citations


Journal ArticleDOI
TL;DR: In this article, two new correlations for predicting the thermal conductivity of studied hybrid nanofluids, in terms of solid concentration and temperature, are proposed that use an artificial neural network (ANN) and are based on experimental data.

341 citations


Journal ArticleDOI
TL;DR: In this article, the influence of functional covalent groups on the thermophysical properties of carbon nanotube base fluid was investigated experimentally, and it was found that increasing Reynolds number, Peclet number or fraction of nanomaterial would improve the heat transfer characteristics of the nanofluid.

195 citations


Journal ArticleDOI
TL;DR: In this paper, an artificial neural network was designed to predict thermal conductivity and dynamic viscosity of ferromagnetic nanofluids from input experimental data including temperature, diameter of particles, and solid volume fraction.

192 citations


Journal ArticleDOI
TL;DR: In this paper, the authors reviewed the effects of type and location of local heat sources as well as the different configurations of cavities and boundary conditions on the enclosed fluid flow and heat transfer.

168 citations


Journal ArticleDOI
TL;DR: In this paper, the performance of a flat plate solar collector with SiO2/ethylene glycol (EG) nanofluid with volume fractions up to 1% was investigated.

162 citations


Journal ArticleDOI
TL;DR: In this article, the thermal conductivity of Al2O3-water nanofluid at different temperatures and solid volume fractions has been modeled by artificial neural network (ANN) and correlation using experimental data.

161 citations


Journal ArticleDOI
TL;DR: In this paper, the effects of solid volume fraction and temperature on thermal conductivity of DWCNT(inner diameter of 3-nm)-ZnO(diameter of 10-30nm)/water-ethylene glycol (60:40) nanofluids have been performed using KD2-Pro thermal analyzer in details.

159 citations


Journal ArticleDOI
TL;DR: In this paper, the effect of different values of shear forces, solid nanoparticles concentration, slip coefficient, and periodic heat flux on the flow and temperature fields as well as heat transfer rate has been evaluated.

140 citations


Journal ArticleDOI
TL;DR: In this article, the authors reviewed the application of nanofluids in vehicle engine cooling system and suggested the suggested amount of nanoparticles for optimum performance in VEV cooling system.

138 citations


Journal ArticleDOI
TL;DR: In this article, the ratio of thermal conductivities and electrical conductivities of nanofluids in water: ethylene glycol (EG) mixtures are established. But, the results showed that thermal conductivity reduced as the EG content percentage increases in the water: EG mixture.

Journal ArticleDOI
TL;DR: In this article, the effect of geometrical parameters on laminar water flow and forced convection heat transfer characteristics in grooved microchannel heat sink (GMCHS) was investigated.

Journal ArticleDOI
TL;DR: In this article, the thermal conductivity of ZnO-EG nanofluid has been investigated experimentally, and an experimental model has been proposed as a function of solid concentration and temperature.

Journal ArticleDOI
TL;DR: In this article, a neural network was used to predict the thermal conductivity of Mg(OH)2 nanoparticles with mean diameter of 10nm dispersed in ethylene glycol.

Journal ArticleDOI
TL;DR: In this article, the thermal conductivity of MgO/water-EG (60:40) nanofluid has been investigated for different solid volume fractions and temperatures.

Journal ArticleDOI
TL;DR: In this paper, the authors proposed a new design concept of microchannel heat sink, in which solid fins are replaced by porous fins, to reduce the pressure drop across the heat sink.

Journal ArticleDOI
TL;DR: In this article, the thermal conductivity of CuO/EG-water nanofluid in different solid concentrations and temperatures has been experimentally investigated using the KD2 Pro instrument.

Journal ArticleDOI
TL;DR: In this article, the effect of temperature and concentration on thermal conductivity of nanofluid, statistically, has been investigated using second-order polynomial equations and the significance of the models was tested using the analysis of variance (ANOVA).

Journal ArticleDOI
TL;DR: In this article, the effect of eccentricity in horizontal, inclined and vertical directions on heat transfer rate in most numerical and experimental investigations for horizontal and vertical annular tubes is studied.

Journal ArticleDOI
TL;DR: In this article, an ANN model has been used to predict thermal conductivity of MgO-water/EG (60:40) nanofluids based on experimental data.

Journal ArticleDOI
TL;DR: In this paper, a numerical study has been performed to investigate the film-cooling heat reduction performance of a single jet (diameter 2mm and 09mm), and an array forward facing of micro-jets of the same effective area (corresponding to the respective single jet).

Journal ArticleDOI
TL;DR: In this article, the heat transfer characteristics of a laboratory-scale gravity bed waste heat boiler were investigated, and a technique for thermal energy recovery from high-temperature slag particles using a gravity bed heat boiler was exploited.

Journal ArticleDOI
TL;DR: In this article, a numerical investigation is performed on the unsteady free convection heat transfer characteristics of a nanofluid confined within a porous open wavy cavity using the mathematical nano-fluid model proposed by Buongiorno.

Journal ArticleDOI
TL;DR: In this article, a 3D numerical simulation and multi-objective optimization of natural convection in a cylindrical annulus mold filled with molten potassium under a magnetic field is carried out.

Journal ArticleDOI
TL;DR: In this article, the authors investigated the impact of the dispersed nanoparticles concentration on thermal properties, convective heat transfer coefficient, thermal performance factor and entropy generation for a graphene nanoplatelets (GNP) nanofluid with specific surface area of 750 m2/g under laminar forced convection conditions inside a circular stainless steel tube subjected to constant wall heat flux.

Journal ArticleDOI
TL;DR: In this article, a hybrid neural network based on the group method of data handling (GMDH-NN) has been employed for modeling the effective viscosity of Al2O3-glycerol nanofluid.

Journal ArticleDOI
TL;DR: In this article, the effects of ribs turbulators on the fluid flow and heat transfer performance of a straight microchannel were investigated, and the results showed that the Nusselt number and friction coefficient of nanofluids in the ribbed microchannel are higher than those of simple microchannel, and this enhancement increased with increasing the width of the ribs.

Journal ArticleDOI
TL;DR: In this paper, an experimental investigation has been carried out to study the heat transfer and pressure drop characteristics of Nanofluid turbulent flow inside horizontal copper tube with different wire coil inserts under constant heat flux.

Journal ArticleDOI
TL;DR: In this paper, the neutral axis theory is introduced to analyze the temperature distribution in the cross section of a part, and then predict the warping trend, and the feasibility of using an effective local mold temperature setting in a cooling system to reduce part warpage was verified.

Journal ArticleDOI
TL;DR: In this article, the surface tension of the nanofluids was determined by using the Du-Hotly ring method in DCAT11EC automatic surface tensiometer, and the authors analyzed all the possible effects on surface tension with the change in concentrations (from 0.05 to 0.25 vol.) and temperatures (from 30 degrees C to 50 degrees C), as well as the impact of various nanoparticles along with their sizes.