Journal of Heat Transfer: Recent submissions
Now showing items 1681-1700 of 3611
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Exergy Prediction Model of a Double Pipe Heat Exchanger Using Metal Oxide Nanofluids and Twisted Tape Based on the Artificial Neural Network Approach and Experimental Results
(The American Society of Mechanical Engineers (ASME), 2016)In heat transfer area, researches have been carried out over several years for the development of convective heat transfer enhancement (HTE) techniques. For proper optimization of thermal engineering systems in terms of ... -
Large Eddy Simulation of Turbulent Heat Transfer in Curved Pipe Flow
(The American Society of Mechanical Engineers (ASME), 2016)In the present investigation, turbulent heat transfer in fully developed curvedpipe flow has been studied by using large eddy simulation (LES). We consider a fully developed turbulent curvedpipe flow with axially uniform ... -
Water Droplet With Carbon Particles Moving Through High Temperature Gases
(The American Society of Mechanical Engineers (ASME), 2016)An experimental investigation was carried out on the influence of solid inclusions (nonmetallic particles with sizes from a few tens to hundreds of micrometers) on water droplet evaporation during motion through hightemperature ... -
Nanoparticle Dispersions on Ternary Nitrate Salts for Heat Transfer Fluid Applications in Solar Thermal Power
(The American Society of Mechanical Engineers (ASME), 2016)In this study, we report enhancement in heat capacity of SiO2 nanoparticle dispersions in a molten ternary nitrate salt (NaNO3, KNO3, and Ca(NO3)2) to obtain an effective heat transfer fluid (HTF)/thermal energy storage ... -
Analysis of Particle Image Velocimetry Measurements of Natural Convection in an Enclosure Using Proper Orthogonal Decomposition
(The American Society of Mechanical Engineers (ASME), 2015)This work investigates natural convection in an enclosure with localized heating on the bottom wall with a flushed or protruded heat source and cooled on the top and the side walls. Velocity field measurements are done by ... -
An Appraisal of System Mean Void Fraction and Its Application for the Moving Boundary Simulation of Phase Change Heat Exchangers
(The American Society of Mechanical Engineers (ASME), 2015)In gas–liquid twophase flow, void fraction is the most unique parameter which influences all the transport processes. In the most general case, though the void fraction varies nonlinearly with the channel length, many ... -
Prediction of Vapor Film Thickness Below a Leidenfrost Drop
(The American Society of Mechanical Engineers (ASME), 2015)In this work, the vapor film thickness below a stagnant Leidenfrost drop at saturation temperature is predicted by performing a balance of the dominant forces acting on the drop. Inclusion of a new momentum force term is ... -
Effect of Channel Confinement on Mixed Convective Flow Past an Equilateral Triangular Cylinder
(The American Society of Mechanical Engineers (ASME), 2015)The present work investigates the mixed convective flow and heat transfer characteristics past a triangular cylinder placed symmetrically in a vertical channel. At a representative Reynolds number, Re = 100, simulations ... -
Joint State and Input Estimation for One Dimensional Heat Conduction
(The American Society of Mechanical Engineers (ASME), 2015)This paper presents a joint state and input estimation algorithm for the onedimensional heatconduction problem. A computationally efficient method is proposed in this work to solve the inverse heatconduction problem (IHCP) ... -
Numerical Studies on Hydrogen Distribution in Enclosures in the Presence of Condensing Steam
(The American Society of Mechanical Engineers (ASME), 2015)Hydrogen release in confined spaces is an important safety issue, which is even more important in the context of severe accident in nuclear reactors. In severe accidents, hydrogen release is associated with release of steam ... -
Spectral Photon Monte Carlo With Energy Splitting Across Phases for Gas–Particle Mixtures
(The American Society of Mechanical Engineers (ASME), 2015)In multiphase modeling of fluidized beds, pulverized coal combustors, spray combustors, etc., where different temperatures for gas and solid phases are considered, the governing equations result in separate energy equations ... -
Rewetting of Vertical Pipes by Bottom Flooding Using Nanofluid as a Coolant
(The American Society of Mechanical Engineers (ASME), 2015)The present investigation reports the rewetting phenomenon by bottom flooding in vertical pipes using both water and nanofluid as coolant. The transient temperature response of rewetted surface indicates that rewetting ... -
Experimental and Numerical Investigation of a Single Phase Square Natural Circulation Loop
(The American Society of Mechanical Engineers (ASME), 2015)Experimental and numerical analyses are carried out for a natural circulation loop (NCL) under low and moderate heater power. The effect of ambient temperature variation on the loop thermal behavior has been taken into ... -
Bayesian Inference for Parameter Estimation in Transient Heat Transfer Experiments
(The American Society of Mechanical Engineers (ASME), 2015)In this study, an inverse heat transfer problem of parameter estimation using Bayesian inference is considered. Single parameter (specific heat of solid material) estimation as well as simultaneous estimation of two ... -
Boiling of R134a in a Plate Fin Heat Exchanger Having Offset Fins
(The American Society of Mechanical Engineers (ASME), 2015)This paper presents experimental results on boiling heat transfer of R134a in a compact plate fin heat exchanger. The exchanger is made of aluminum and has high density offset fins (30 fins/in.). Such heat exchangers are ... -
Convection Enhanced Intravitreous Drug Delivery in Human Eye
(The American Society of Mechanical Engineers (ASME), 2015)Twodimensional computational model has been developed for simulation of convectionassisted drug transport during intravitreal drug delivery for vitrectomized human eye. The convection current in vitreous humor was induced ... -
Combined Influence of Synthetic Jet and Surface Mounted Rib on Heat Transfer in a Square Channel
(The American Society of Mechanical Engineers (ASME), 2015)This investigation reports the combined effect of synthetic jet and a surfacemounted rib on heat transfer in a square crosssection channel flow. The rib height to hydraulic diameter ratio is equal to 0.1625. The Reynolds ... -
Experimental Analysis of Water Vapor Diffusion Through Porous Membranes in a Proton Exchange Membrane Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2015)We report the diffusion characteristics of water vapor through two different porous media, viz., membrane electrode assembly (MEA) and gas diffusion layer (GDL) in a nonoperational fuel cell. Tunable diode laser absorption ... -
Experimental Study of Shape Transition in an Acoustically Levitated and Externally Heated Droplet
(The American Society of Mechanical Engineers (ASME), 2015)Experimental analyses of surface oscillations are reported in acoustically levitated, radiatively heated bicomponent droplets with one volatile and other being nonvolatile. Two instability pathways are observed: one being ... -
Porous Medium Modeling of Combined Effects of Cell Migration and Anisotropicity of Stratum Corneum on Transdermal Drug Delivery
(The American Society of Mechanical Engineers (ASME), 2015)A numerical model for transdermal drug delivery (TDD) has been developed by treating skin as a composite, dynamic, porous medium. Governing unsteady mass transport equations in porous medium was solved for different cases ...