Journal of Heat Transfer: Recent submissions
Now showing items 1781-1800 of 3611
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Experimental Study of Single Phase Heat Transfer and Pressure Loss in a Spiraling Radial Inflow Microchannel Heat Sink
(The American Society of Mechanical Engineers (ASME), 2015)This paper presents an experimental study of the heat transfer and pressure drop characteristics of a single phase high heat flux microchannel cooling system with spiraling radial inflow. The heat sink provides enhanced ... -
Experimental Investigation on the Thermal and Hydraulic Performance of Alumina–Water Nanofluids in Single Phase Liquid Cooled Cold Plates
(The American Society of Mechanical Engineers (ASME), 2015)The thermal and hydraulic performance of singlephase waterbased alumina nanofluids used as coolants in liquidcooled cold plates are reported and results baselined against those using water. Experimental results show that ... -
Thermal Performance of Microencapsulated Phase Change Material Slurry in a Coil Heat Exchanger
(The American Society of Mechanical Engineers (ASME), 2015)An experimental study has been carried out to investigate the convective heat transfer and pressure drop characteristics of microencapsulated phase change material (MPCM) slurry in a coil heat exchanger (CHX). The thermal ... -
Numerical Simulation of Solidification of Colloids Inside a Differentially Heated Cavity
(The American Society of Mechanical Engineers (ASME), 2015)Development of the solid–liquid interface, distribution of the particle concentration field, as well as the development of thermosolutal convection during solidification of colloidal suspensions in a differentially heated ... -
Boiling Heat Transfer From an Array of Round Jets With Hybrid Surface Enhancements
(The American Society of Mechanical Engineers (ASME), 2015)The effect of a variety of surface enhancements on the heat transfer achieved with an array of impinging jets is experimentally investigated using the dielectric fluid HFE7100 at different volumetric flow rates. The ... -
Cross Plane Phonon Conduction in Polycrystalline Silicon Films
(The American Society of Mechanical Engineers (ASME), 2015)Silicon films of submicrometer thickness play a central role in many advanced technologies for computation and energy conversion. Numerous thermal conductivity data for silicon films are available in the literature, but ... -
Effect of Evaporation and Condensation at Menisci on Apparent Thermal Slip
(The American Society of Mechanical Engineers (ASME), 2015)We semianalytically capture the effects of evaporation and condensation at menisci on apparent thermal slip lengths for liquids suspended in the Cassie state on ridgetype structured surfaces using a conformal map and ... -
Heat Conduction in Nanostructured Materials Predicted by Phonon Bulk Mean Free Path Distribution
(The American Society of Mechanical Engineers (ASME), 2015)We develop a computational framework, based on the Boltzmann transport equation (BTE), with the ability to compute thermal transport in nanostructured materials of any geometry using, as the only input, the bulk cumulative ... -
Analysis of Heat Conduction in a Heterogeneous Material by a Multiple Scale Averaging Method
(The American Society of Mechanical Engineers (ASME), 2015)In order to better manage computational requirements in the study of thermal conduction with shortscale heterogeneous materials, one is motivated to arrange the thermal energy equation into an accurate and efficient form ... -
Integration of Genetic Programing With Genetic Algorithm for Correlating Heat Transfer Problems
(The American Society of Mechanical Engineers (ASME), 2015)In the present paper, the genetic programing (GP) is integrated with the genetic algorithm (GA) for deriving heat transfer correlations. In the process of developing heat transfer correlations with the approach (GP with ... -
Optimization of Pin Fins for a Heat Exchanger by Entropy Generation Minimization and Constructal Law
(The American Society of Mechanical Engineers (ASME), 2015)Pinfins are considered as one of the best elements for heat transfer enhancement in heat exchangers. In this study, the topology of pinfins (length, diameter, and shape) is optimized based on the entropy generation ... -
Optimization of Printed Circuit Heat Exchanger Using Exergy Analysis
(The American Society of Mechanical Engineers (ASME), 2015)A printed circuit heat exchanger (PCHE) with zigzag flow channels in a doublefaced configuration was optimized to enhance its thermal–hydraulic performance. Using exergy analysis, the objective function was defined as ... -
Characterizing Effects of the Shape of Screw Conveyors in Gas–Solid Fluidized Beds Using Advanced Numerical Models
(The American Society of Mechanical Engineers (ASME), 2015)A numerical study of the effects of the shape of an enclosed screw conveyor on the mixing and heat transfer in a horizontal gas–solid fluidized bed was conducted using computational fluid dynamics (CFD). A twofluid model ... -
Prediction of Two Phase Heat Transfer Coefficients in a Horizontal Pipe for Different Inclined Positions With Artificial Neural Networks
(The American Society of Mechanical Engineers (ASME), 2015)This paper presents the application of artificial neural network (ANN) in prediction of heat transfer coefficients (HTCs) of twophase flow of air–water in a pipe in the horizontal and slightly upward inclined (2, 5, and ... -
Constructal Design Associated to Genetic Algorithm of Asymmetric V Shaped Pathways
(The American Society of Mechanical Engineers (ASME), 2015)This work relies on constructal design to perform the geometric optimization of the Vshaped pathways of highly conductive materials (inserts) that remove a constant heat generation rate from a body and deliver it to ... -
Heat Transfer, Pressure Drop, and Entropy Generation in a Solar Collector Using SiO2/Water Nanofluids: Effects of Nanoparticle Size and pH
(The American Society of Mechanical Engineers (ASME), 2015)In this paper, an analytical study is carried out on the heat transfer, pressure drop, and entropy generation in a flatplate solar collector using SiO2/water nanofluid with volume concentration of 1%. In the study, the ... -
Optimization of Gallium Nitride Metalorganic Chemical Vapor Deposition Process
(The American Society of Mechanical Engineers (ASME), 2015)This paper investigates the simulation, response surface modeling, and optimization of the metalorganic chemical vapor deposition (MOCVD) process for the deposition of gallium nitride (GaN). Trimethylgallium (TMGa) and ... -
Optimal Shapes of Straight Fins and Finned Heat Sinks
(The American Society of Mechanical Engineers (ASME), 2015)Finned heat sinks are used to cool power electronics components. We present optimization results for single rectangular, triangular, and trapezoidal fins. After that, we minimize the mass of an existing heat sink consisting ... -
Evolution in the Design of V Shaped Highly Conductive Pathways Embedded in a Heat Generating Piece
(The American Society of Mechanical Engineers (ASME), 2015)This paper presents the evolution of architecture of high conductivity pathways embedded into a heat generating body on the basis of Constructal theory. The main objective is to introduce new geometries for the highly ... -
Achieving Heat Flux Uniformity Using an Optimal Arrangement of Impinging Jet Arrays
(The American Society of Mechanical Engineers (ASME), 2015)In order to achieve uniform distribution of heat flux over an isothermal heated target surface, a numerical algorithm is developed to obtain an optimized array of four laminar impinging slot jets. Root mean square deviation ...