Showing papers in "Heat Transfer Engineering in 2021"
TL;DR: In this article, the free convection with volumetric radiation in a water-alumina nanofluid flowing between two inclined concentric cylinders was simulated, and the enclosure, or the cavity between the two cylinders, was shown.
Abstract: In this study, the free convection with volumetric radiation in a water–alumina nanofluid flowing between two inclined concentric cylinders was simulated. The enclosure, or the cavity between the t...
73 citations
TL;DR: In this article, the authors present a heat sink design for additively manufactured devices that can be used in the manufacturing process, and demonstrate the benefits of using heat sinks for additive manufacturing.
Abstract: Advances in manufacturing technologies and the recent explosion of materials and methods for creating additively manufactured devices has opened new avenues for novel heat sink designs that can be ...
39 citations
TL;DR: In this article, the photovoltaic module temperature depends on many parameters and becomes an important parameter from the system efficiency point of view, and a comprehensive analytically analytical analysis is presented.
Abstract: The photovoltaic module temperature depends on many parameters and becomes an important parameter from the system efficiency point of view. For this reason, in this research, a comprehensive analys...
33 citations
TL;DR: In this paper, the authors conduct an experimental study on the thermal performance of finned metal foam (FMF) heat sinks with phase change material and show that the dynamic temperature response of an FMF heat sink with phase-change material is similar to that of an FPGA.
Abstract: The present research conducts an experimental study on the thermal performance of the finned metal foam (FMF) heat sinks with phase change material. The dynamic temperature response of an FMF heat ...
33 citations
TL;DR: In this article, the experimental results of flow boiling of water in single rectangular microchannels were presented, and three rectangular copper micro-channels having the same hydraulic diameter (0.56mm) and l...
Abstract: The article presents the experimental results of flow boiling of water in single rectangular microchannels. Three rectangular copper microchannels having the same hydraulic diameter (0.56 mm) and l...
31 citations
TL;DR: In this article, a systematic experimental investigation of the viscosity of more than 30 different nanofluids was carried out, which were prepared based on distilled water, ethylene glycol, and distilled water.
Abstract: The systematic experimental investigation of the viscosity of more than 30 different nanofluids was carried out. The investigated nanofluids were prepared based on distilled water, ethylene glycol ...
29 citations
TL;DR: The thermal-hydraulic performance of SCO2 in a printed circuit heat exchanger (PCHE) depends on the PCHE structure as well as t... as mentioned in this paper.
Abstract: Printed circuit heat exchanger (PCHE) is a promising candidate of coolers used for SCO2 Brayton cycle. The thermal-hydraulic performance of SCO2 in a PCHE depends on the PCHE structure as well as t...
20 citations
TL;DR: In this article, a non-dimensional parametric numerical study of heat transfer during the melting process within an enclosure filled with a phase change material (PCM) was numerically performed.
Abstract: In this study, a non-dimensional parametric numerical study of heat transfer during the melting process within an enclosure filled with a phase change material (PCM) was numerically performed. The ...
19 citations
TL;DR: In this paper, the authors present the experimental results on the natural convection heat transfer performance of nanofluids in a cavity and compare them to numerical and experimental findings on the same.
Abstract: The public domain is inundated with discrepancies in numerical and experimental findings on the natural convection heat transfer performance of nanofluids in a cavity. This paper presents the exper...
19 citations
TL;DR: The metal-organic frameworks (MOFs) are emerging as potential adsorbents for adsorption-based systems intended for various applications as discussed by the authors, and aluminum fumarate is one of the promising MOFs for being used as...
Abstract: Metal-organic frameworks (MOFs) are emerging as potential adsorbents for adsorption based systems intended for various applications. Aluminum fumarate is one of the promising MOFs for being used as...
18 citations
TL;DR: In this article, the effect of zirconia nanoparticles coated with gold nanoparticles on the pool boiling heat transfer has been investigated, and the results show that the effect is negligible.
Abstract: Nanofluid preparation and its deposition on metallic surfaces are in wide practice due to their enhancement capability in the pool boiling heat transfer. The effect of zirconia nanoparticles coated...
TL;DR: Laminar natural convection in unconfined power-law fluids from two attached horizontal cylinders has been investigated numerically to elucidate the non-Newtonian behavior of the fluid over a wide range as discussed by the authors.
Abstract: Laminar natural convection in unconfined power-law fluids from two attached horizontal cylinders has been investigated numerically to elucidate the non-Newtonian behavior of the fluid over a wide r...
TL;DR: In this paper, a phase change material based heat sink with a compact heat pipe as the thermal performance enhancer is presented, and the results of experimental and numerical investigations are reported.
Abstract: This paper reports the results of experimental and numerical investigations on a phase change material based heat sink, with a compact heat pipe as the thermal performance enhancer. The evaporator ...
TL;DR: In this paper, the laminar steady-state two-dimensional magnetohydrodynamic natural convection within a shallow enclosure was analyzed and the latter was filled with an Al2O3-water nanofluorescence.
Abstract: The present analytical study deals with the laminar steady-state two-dimensional magnetohydrodynamic natural convection within a shallow enclosure. The latter is filled with an Al2O3-water nanoflui...
TL;DR: In this article, the effect of non-uniform magnetic field on forced convection heat transfer of ferrofluids in flattened tubes has been investigated numerically using two-phase mixture model.
Abstract: The effect of non-uniform magnetic field on forced convection heat transfer of ferrofluids in flattened tubes has been investigated numerically using two-phase mixture model. The equilibrium magnet...
TL;DR: Fluid-structure interaction problem with moving indentation problem is numerically simulated in this article, where flow features of oscillating stenosis of a blood vessel are represented as flow features.
Abstract: Fluid-structure interaction problem – unsteady channel flow with a moving indentation problem, which represents flow features of oscillating stenosis of a blood vessel, is numerically simulated her...
TL;DR: The non-Fourier dual-phase lag heat model has been solved as a well-known accurate bioheat model to compute the temperature distribution in a three-dimensional multilayered skin of the human finger as mentioned in this paper.
Abstract: The non-Fourier dual-phase-lag heat model has been solved as a well-known accurate bioheat model to compute the temperature distribution in a three-dimensional multilayered skin of the human finger...
TL;DR: In this article, the liquid flow and heat transfer performance in rectangular channels with winglets were determined numerically in the Reynolds number range of 100 to 300 for water with constant thermophysical propert...
Abstract: The liquid flow and heat transfer performance in rectangular channels with winglets are determined numerically in the Reynolds number range of 100 to 300. Water with constant thermophysical propert...
TL;DR: In this article, the heat and mass transfer characteristics of a micropolar nanofluid-filled cubic cavity were investigated with different types of nanoparticles (Al2O3, TiO2, Cu and Ag).
Abstract: The heat and mass transfer characteristics of a micropolar nanofluid-filled cubic cavity are investigated with different types of nanoparticles (Al2O3, TiO2, Cu and Ag). Pure water is assumed as th...
TL;DR: In this article, Al2O3-water nanofluids along with stationary and rotating twisted tape inserts are used to increase the rate of heat transfer in a plain tube.
Abstract: Al2O3–water nanofluids along with stationary and rotating twisted tape inserts are used to increase the rate of heat transfer in a plain tube. The simulations are conducted through varying the desi...
TL;DR: In this article, a plate heat exchanger (PHE) has been widely used in energy transport fields for its high efficiency and compact structure, however, fouling is an intractable issue which reduces heat transfer efficiencies.
Abstract: Plate heat exchanger (PHE) has been widely used in energy transport fields for its high efficiency and compact structure. However, fouling is an intractable issue which reduces heat transfer effici...
TL;DR: In this paper, the authors demonstrate the possibility to increase the heat transfer efficiency by using simple wire coil inserts to create turbulent flow in the boundary layer as well as in the interior layer.
Abstract: In this work, the authors wanted to demonstrate the possibility to increase the heat transfer efficiency by using simple wire coil inserts to create turbulent flow in the boundary layer as well as ...
TL;DR: In this article, a microchannel evaporator based cooling system is shown to be prone to the instability mechanism called pressure drop oscillation, which occurs in micro-channel cooling systems.
Abstract: While microchannel evaporator based cooling systems are efficient in removing high heat fluxes they are prone to the instability mechanism called pressure drop oscillation. The instability ...
TL;DR: The urban heat island effect amplifies the global warming phenomenon with sensible aftermaths on the building energy consumptions as discussed by the authors, and the absence of green areas, open water channels as well as the lac...
Abstract: The urban heat island effect amplifies the global warming phenomenon with sensible aftermaths on the building energy consumptions. The absence of green areas, open water channels as well as the lac...
TL;DR: In this paper, the main disadvantages of conventional fixed-bed adsorption chillers is the low coefficient of performance due to the high voidage of the sorbent beds, and the common method, which can help to help to h...
Abstract: One of the main disadvantages of conventional fixed-bed adsorption chillers is the low coefficient of performance due to the high voidage of the sorbent beds. The common method, which can help to h...
TL;DR: In this paper, the authors present the results of a numerical and experimental analysis of atmospheric water condensation and show that water scarcity is the biggest survival challenge for the current generation, and atmospheric condensation can be a solution.
Abstract: Water scarcity is the biggest survival challenge for the current generation, and atmospheric water condensation can be a solution. This paper presents the results of a numerical and experimental ev...
TL;DR: In this paper, the performance prediction of the local thermal-hydraulic performance of supercritical CO2 in channels of printed circuit heat exchanger geometries has been studied.
Abstract: Understanding and predictions of the local thermal-hydraulic performance of supercritical CO2 in channels of printed circuit heat exchanger geometries are of great importance to the design and opti...
TL;DR: In this paper, the authors numerically studied the enhanced heat transfer mechanism of the coupled fields of detached and spiral vortices in symmetrical and asymmetrical spirally corrugated tubes.
Abstract: The present work numerically studied the enhanced heat transfer mechanism of the coupled fields of detached and spiral vortices in symmetrical and asymmetrical spirally corrugated tubes. The heat t...
TL;DR: In this paper, a cooling radiator developed specifically for unmanned aerial vehicles was analyzed using computational fluid dynamics (CFD) in order to evaluate the performance of the UAV's cooling system.
Abstract: In this study, a cooling radiator developed specifically for unmanned aerial vehicles was analyzed using computational fluid dynamics (CFD). The radiator consisted of turbulator pins (core side) pl...
TL;DR: In this article, a LHTES shell-and-tube device filled with phase change material (PCM) was studied by means of numerical simulations, and the convection within a latent heat thermal energy storage (LHTES) was analyzed.
Abstract: Convection within a latent heat thermal energy storage (LHTES) shell-and-tube device filled with phase change material (PCM) has been studied by means of numerical simulations. Both, the heat trans...