Journal of Heat Transfer: Recent submissions
Now showing items 1881-1900 of 3611
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Solidification of Phase Change Materials Infiltrated in Porous Media in Presence of Voids
(The American Society of Mechanical Engineers (ASME), 2014)Infiltration of phase change materials (PCM) into highly conductive porous structures effectively enhances the thermal conductivity and phase change (solidification and melting) characteristics of the resulting thermal ... -
Heat Transfer Prediction of a Jet Impinging a Cylindrical Deadlock Area
(The American Society of Mechanical Engineers (ASME), 2014)The turbulent heat transfer by a confined jet flowing inside a hot cylindrical cavity is investigated numerically in this paper. This configuration is found in several engineering applications such as air conditioning and ... -
Effect of Apex Angle, Porosity, and Permeability on Flow and Heat Transfer in Triangular Porous Ducts
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents an analysis of forced convection flow and heat transfer in triangular ducts containing a porous medium. The porous medium is isotropic and the flow is laminar, fully developed with constant properties. ... -
Effect of Induced Magnetic Field on Magnetohydrodynamic Stagnation Point Flow and Heat Transfer on a Stretching Sheet
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, the steady magnetohydrodynamic (MHD) stagnation point flow of an incompressible viscous electrically conducting fluid over a stretching sheet has been investigated. Velocity and thermal slip conditions have ... -
Natural Convection From Interrupted Vertical Walls
(The American Society of Mechanical Engineers (ASME), 2014)Steadystate external natural convection heat transfer from interrupted rectangular vertical walls is investigated. A systematic numerical, experimental, and analytical study is conducted on the effect of adding interruptions ... -
Pressure Drop and Heat Transfer of Nanofluid in Turbulent Pipe Flow Considering Particle Coagulation and Breakage
(The American Society of Mechanical Engineers (ASME), 2014)Numerical simulations of Al2O3/water nanofluid in turbulent pipe flow are performed with considering the particle convection, diffusion, coagulation, and breakage. The distributions of particle volume concentration, the ... -
Transversal Method of Lines for Unsteady Heat Conduction With Uniform Surface Heat Flux
(The American Society of Mechanical Engineers (ASME), 2014)The transversal method of lines (TMOL) is a general hybrid technique for determining approximate, semianalytic solutions of parabolic partial differential equations. When applied to a onedimensional (1D) parabolic partial ... -
The Effect of Weak Crossflow on the Heat Transfer Characteristics of Short Distance Impinging Cooling
(The American Society of Mechanical Engineers (ASME), 2014)This paper numerically and experimentally investigated the effect of weak crossflow on the heat transfer characteristics of a shortdistance impinging jet. The Reynolds number of the impinging jet ranged from 6000 to 15,000, ... -
Investigation of Anisotropic Thermal Conductivity in Polymers Using Infrared Thermography
(The American Society of Mechanical Engineers (ASME), 2014)A new experimental method based on infrared thermography (IRT) is developed to study deformationinduced anisotropic thermal conductivity in polymers. An analytic solution for the temperature field of samples heated by a ... -
Transient Temperature Response of Variable Flow Heat Exchangers in a Marnoch Heat Engine
(The American Society of Mechanical Engineers (ASME), 2014)Within a Marnoch heat engine (MHE), a water/glycol mixture transfers heat from the heat source into a set of variable flow heat exchangers and removes heat from adjoining cold heat exchangers. The compressed dry air is ... -
Experimental Investigation of the Heat Transfer Performance of a Hybrid Cooling Fin Thermosyphon
(The American Society of Mechanical Engineers (ASME), 2014)The effect of fill volume on the heat transfer performance of a hybrid cooling fin thermosyphon, characterized by an airfoil crosssectional shape and a slotshaped cavity, is investigated. The performance was examined at ... -
Dual Solutions in Magnetohydrodynamic Stagnation Point Flow and Heat Transfer Over a Shrinking Surface With Partial Slip
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, the problem of steady twodimensional magnetohydrodynamic (MHD) stagnationpoint flow and heat transfer of an incompressible viscous fluid over a stretching/shrinking sheet is investigated in the presence of ... -
Experimental and Numerical Investigation of Turbulent Natural Convection Flow in a Vertical Channel With a Heated Obstacle
(The American Society of Mechanical Engineers (ASME), 2014)In the present study, experiments were carried out for natural turbulent convection induced by a heated square bar in a twodimensional (2D) open vertical channel for different Rayleigh numbers and bar positions. For this ... -
Optimal Distribution of Discrete Heat Sources Under Mixed Convection—A Heuristic Approach
(The American Society of Mechanical Engineers (ASME), 2014)Steady state experiments are conducted in a low speed horizontal wind tunnel under mixed convection for five discrete heat sources (aluminum) of nonidentical sizes arranged at different positions on a substrate board ... -
Quantifying Uncertainty in Multiscale Heat Conduction Calculations
(The American Society of Mechanical Engineers (ASME), 2014)In recent years, there has been interest in employing atomistic computations to inform macroscale thermal transport analyses. In heat conduction simulations in semiconductors and dielectrics, for example, classical molecular ... -
A Molecular Dynamics Study on Heat Transfer Characteristics Over the Interface of Self Assembled Monolayer and Water Solvent
(The American Society of Mechanical Engineers (ASME), 2014)We performed molecular dynamics (MD) simulations of the interface which is comprised of selfassembled monolayer (SAM) and water solvent to investigate heat transfer characteristics. In particular, local thermal boundary ... -
Natural Convective Boundary Layer Flow of Nanofluids Above an Isothermal Horizontal Plate
(The American Society of Mechanical Engineers (ASME), 2014)The natural convective boundary layer flow of a nanofluid over an isothermal horizontal plate is studied analytically. The model used for the nanofluid accounts for the effects of Brownian motion and thermophoresis. The ... -
Multi objective Design Optimization of Branching, Multifloor, Counterflow Microheat Exchangers
(The American Society of Mechanical Engineers (ASME), 2014)Heat removal capacity, coolant pumping power requirement, and surface temperature nonuniformity are three major challenges facing singlephase flow microchannel compact heat exchangers. In this paper multiobjective optimization ... -
Influence of Prestress Fields on the Phonon Thermal Conductivity of GaN Nanostructures
(The American Society of Mechanical Engineers (ASME), 2014)The phonon thermal conductivity of Gallium nitride (GaN) nanofilms and nanowires under prestress fields are investigated theoretically. In the framework of elasticity theory, the phonon dispersion relations of spatially ... -
Effects of Pressure and a Microporous Coating on HFC 245fa Pool Boiling Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2014)A study was conducted to experimentally characterize the pool boiling performance of hydrofluorocarbon HFC245fa at pressures ranging from 0.15 MPa to 1.1 MPa (reduced pressure range: 0.04–0.31). Pool boiling experiments ...