Journal of Heat Transfer: Recent submissions
Now showing items 2181-2200 of 3611
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Heat Transfer in Microchannels—2012 Status and Research Needs
(The American Society of Mechanical Engineers (ASME), 2013)Heat transfer and fluid flow in microchannels have been topics of intense research in the past decade. A critical review of the current state of research is presented with a focus on the future research needs. After providing ... -
Genetic Algorithm Optimization of a Finned Tube Heat Exchanger Modeled With Volume Averaging Theory
(The American Society of Mechanical Engineers (ASME), 2013)This paper proposes and implements a new methodology for optimizing finnedtube heat exchangers (FTHEs) using a volumeaveraging theory (VAT) hierarchical physical model and a genetic algorithm (GA) numerical optimizer. This ... -
Behavior of Thermally Radiating Tree like Fins
(The American Society of Mechanical Engineers (ASME), 2013)The performance of treelike fins with varying bifurcation angle, surface emissivity, material, widthtothickness ratio, and base heat rate was examined. Overall system performance was examined computationally. The computational ... -
Thermo Fluid Dynamics of an Array of Impinging Ionic Jets in a Crossflow
(The American Society of Mechanical Engineers (ASME), 2013)Laminar to weakly turbulent mixed convection in a square duct heated from the bottom side is highly strengthened by ionic jets generated by an array of high voltage points, opposite to the heated strip. Negative ion injection ... -
Predicting the Nusselt Number of Heterogeneous (Porous) Enclosures Using a Generic Form of the Berkovsky–Polevikov Correlations
(The American Society of Mechanical Engineers (ASME), 2013)A wellknown set of Berkovsky–Polevikov (BP) correlations have been extremely useful in predicting the wallaveraged Nusselt number of “wide†enclosures heated from the side and filled with a fluid undergoing natural ... -
Convective Heat Transfer in an Impinging Synthetic Jet: A Numerical Investigation of a Canonical Geometry
(The American Society of Mechanical Engineers (ASME), 2013)Synthetic jets are generated by an equivalent inflow and outflow of fluid into a system. Even though such a jet creates no net mass flux, net positive momentum can be produced because the outflow momentum during the first ... -
A Hybrid Wavenumber Selection Scheme for Line By Line Photon Monte Carlo Simulations in High Temperature Gases
(The American Society of Mechanical Engineers (ASME), 2013)Recently, it has become possible to conduct linebyline (LBL) accurate radiative heat transfer calculations in spectrally highly nongray combustion systems using the Monte Carlo method. LBL accuracy, in principle, adds ... -
A Numerical Investigation of Turbulent Flow and Heat Transfer in Rectangular Channels With Elliptic Scale Roughened Walls
(The American Society of Mechanical Engineers (ASME), 2013)In the present paper, rectangular channels with six types of elliptic scaleroughened walls for heat transfer enhancement are numerically studied. Heat transfer and fluid flow characteristics for sixteen different scaleroughened ... -
Radiant Fin Performance Using Fractal like Geometries
(The American Society of Mechanical Engineers (ASME), 2013)The results of a computational study into the thermal performance of thermally radiating fractallike fins are presented. Previous experimental studies have shown that fractal patterns increase the heat transfer surface ... -
Efficiencies for Partially Wetted Spine Fins: Uniform Cross Section, Conical, Concave Parabolic, and Convex Parabolic Spines
(The American Society of Mechanical Engineers (ASME), 2013)In this study, efficiencies for partially wetted fins for the uniform cross section spine, conical spine, concave parabolic spine, and convex parabolic spine are presented using an analytical method. Depending on the set ... -
Fast Heating Induced Thermoacoustic Waves in Supercritical Fluids: Experimental and Numerical Studies
(The American Society of Mechanical Engineers (ASME), 2013)Thermoacoustic waves in nearcritical supercritical carbon dioxide are investigated experimentally on acoustic time scales using a fast electrical heating system along with high speed pressure measurements. Supercritical ... -
Forced Heat and Mass Transfer From a Slightly Deformed Sphere at Small but Finite Peclet Numbers in Stokes Flow
(The American Society of Mechanical Engineers (ASME), 2013)The fundamental problem of heat and mass transfer from a slightly deformed sphere at low but finite Peclet numbers in Stokes flow is solved by a combined regular and singular perturbation method. The deformed sphere is ... -
Analytical Solution for 2D Non Fickian Transient Mass Transfer With Arbitrary Initial and Periodic Boundary Conditions
(The American Society of Mechanical Engineers (ASME), 2013)Twodimensional nonFickian diffusion equation is solved analytically under arbitrary initial condition and two kinds of periodic boundary conditions. The concentration field distributions are analytically obtained with a ... -
Study of Flow Boiling Characteristics of a Microchannel Using High Speed Visualization
(The American Society of Mechanical Engineers (ASME), 2013)This paper presents the visualization results obtained for an experimental study of R134a during flow boiling in a horizontal microchannel. The microchannel used was a fused silica tube having an internal diameter of ... -
Call For Photographs
(The American Society of Mechanical Engineers (ASME), 2013) -
Fringe Pattern Visualization of Contact Lines During Evaporation of Nanofluid Droplets
(The American Society of Mechanical Engineers (ASME), 2013) -
Conduction in Jammed Systems of Tetrahedra
(The American Society of Mechanical Engineers (ASME), 2013)Control of transport processes in composite microstructures is critical to the development of highperformance functional materials for a variety of energy storage applications. The fundamental process of conduction and its ... -
Pressure Drop and Void Fraction in Steam Water Two Phase Flow at High Pressure
(The American Society of Mechanical Engineers (ASME), 2013)For a steam generator (SG) in a commercialized sodiumcooled fast breeder reactor (FBR), flow instability in the water side is one of the most important items needing research. As the first step of this research, thermalhydraulic ... -
Boiling Structure and CHF Mechanism in Pool Boiling
(The American Society of Mechanical Engineers (ASME), 2013) -
Dryout Patterns of Nanofluids With Different Initial Concentrations of Nanoparticles (47nm, Al2O3)
(The American Society of Mechanical Engineers (ASME), 2013)