Showing papers in "International Journal of Heat and Mass Transfer in 2018"

TL;DR: In this paper, the authors provide a comprehensive review on thermal conductivity of hybrid nanofluids by overviewing experimental, numerical and ANN (artificial neural networking) studies, and various factors such as nanoparticle type, concentration of nanoparticles, types of base fluid, size of nanoparticle, temperature, addition of surfactant, pH variation and sonication time are analyzed.

TL;DR: In this paper, the enhancement of thermal conductivity by the introduction of highly thermally conductive metallic and carbon-based nanoparticles, metallic foams, expanded graphite and encapsulation of PCM is discussed.

TL;DR: In this paper, multi-walled carbon nanotubes (MWCNT)-based, graphene-based, and MWCNT/graphene-based composite phase change materials (PCM) were prepared and experimentally studied to improve the performance of lithium-ion power battery thermal management system.

TL;DR: In this paper, the authors present a review of the research recent results concerning the thermo-physical properties (thermal conductivity, viscosity, density and specific heat) and the heat transfer and flow characteristics of hybrid nanofluids used in various heat exchangers.

TL;DR: In this article, the influence of thermal radiation and external electric field on Fe3O4-Ethylene glycol nanofluid hydrothermal treatment is presented, where the lid driven cavity is porous media and the bottom wall is selected as positive electrode.

TL;DR: In this paper, the authors evaluated the heat transfer efficiency of Al2O3-MWCNT/thermal oil hybrid nanofluid over different temperatures (25-50°C) and solid concentrations (0.125% −1.5%).

TL;DR: In this paper, a control volume based finite element method is employed to obtain the outputs which are the roles of radiation parameter ( Rd ), Darcy number ( Da ), nanofluid volume fraction ( ϕ ), Rayleigh number ( Ra ) and supplied voltage ( Δ φ ).

TL;DR: In this paper, the impact of melting heat transfer on nanofluid heat transfer enhancement in presence of magnetic field is simulated and an innovative numerical approach is utilized namely CVFEM.

TL;DR: In this article, the impact of non-uniform magnetic field on Fe3O4-H2O nanofluid flow in a porous cavity was demonstrated using Vorticity stream function formulation.

TL;DR: In this paper, a comprehensive review is carried out on the methods used for optimizing the hydrothermal design of heat sinks, including passive and active techniques utilized for enhancing the heat removal from heat sinks by modifying either the solid domain or fluid domain.

TL;DR: In this paper, experimental analysis is examined to estimate hydrothermal behavior of refrigerant-based nanofluid (nano-refrigerant) during condensation inside a horizontal tube.

TL;DR: In this paper, a nanofluid unsteady heat transfer process (solidification) under the impact of thermal radiation is reported and the Finite Element method with adaptive mesh is employed.

TL;DR: In this article, a hierarchical manifold micro-channel heat sink array is used to reduce the parasitic thermal resistances due to contact and conduction resistances, which can reduce the chip footprint area and shorten effective fluid flow lengths.

TL;DR: In this article, the performance of a single component nanofluid with 1.0% volume concentration of a base fluid of water (W) and an ethylene glycol (EG) mixture with 60:40-vol ratio was investigated.

TL;DR: In this article, the authors employed CVFEM to model alumina nanofluid magnetohydrodynamic flow through a permeable enclosure and showed that Lorentz forces boost the conduction mechanism.

TL;DR: In this paper, a two-temperature model is used for simulation of nanofluid convective flow inside a porous enclosure by means of a control volume based finite element method.

TL;DR: In this paper, a novel fin configuration in triplex-tube storage compared to the use of nanoparticles was used to achieve better PCM melting rate in thermal energy storage with phase change materials.

TL;DR: In this article, the minimum desorption temperature is evaluated for different types of adsorption isotherms classified by International Union of Pure and Applied Chemistry (IUPAC), and then compared to the mathematical expression reported in literature derived using Dubinin-Astakhov isotherm model.

TL;DR: In this article, a thermal model for a battery module consisting of 71 18650-type lithium-ion batteries is established, and the effects of discharge/charge C-rate, liquid flow rate, the heat exchange area between neighboring batteries, and interfacing area of the battery and the channel outer wall are investigated.

TL;DR: In this article, the effects of width ratio, Reynolds number, and pitch ratio on nanofluid hydrothermal behavior were illustrated in a heat exchanger equipped with a helical twisted tape turbulator.

TL;DR: In this paper, the influence of Darcy number, Hartmann number, and Rayleigh number on Al2O3-H2O nanofluid treatment is demonstrated.

TL;DR: In this paper, the orientation of hexagonal boron nitride (hBN) platelets is characterized by scanning electron microscopy and X-ray diffraction, and the results indicate that hBN platelets are highly in-plane oriented in PTFE matrix.

TL;DR: In this article, a comparison of two different configurations (square and circular) pinfin heat sinks embedded with two different phase change materials (PCMs) namely paraffin wax and n-eicosane having different thermo-physical properties were carried out for passive cooling of electronic devices.

TL;DR: In this article, the authors investigated the behavior of operational time of heat sinks with respect to specific temperature both for charging and discharging, and showed that at the end of 90min charging, maximum temperature reduction of 25% is noted for RT-35HC/Copper foam at 0.8-2.4

TL;DR: This work finds that the models obtained from SVR, GPR, and CNN all have a better performance than the Maxwell-Eucken model and the Bruggeman model in terms of predicting accuracy.

TL;DR: In this paper, a water-based nanofluid with CuO nanoparticles heat transfer augmentation inside a porous enclosure is studied, which is simulated by Darcy model.

TL;DR: In this paper, a parametric analysis for the round pin-finned heat sinks subjected to steady heat densities for effective and reliable cooling of mobile electronic devices is presented, where phase change material (PCM) namely paraffin wax is adopted as energy storage material and aluminum made round pinfins are selected as thermal conductivity enhancers (TCEs).

TL;DR: In this paper, a review of the recent research on thermal conductivity models of polymer composites is presented, focusing on the influence of the theoretical models and the simulation models of polymers at multiple scales.

TL;DR: In this paper, a three-dimensional numerical model was developed to investigate the fluid flow and heat transfer behaviors in multilayer deposition of plasma arc welding (PAW) based wire and arc additive manufacture (WAAM).