Journal of Heat Transfer: Recent submissions
Now showing items 2101-2120 of 3611
-
Dynamic Calibration of a Coaxial Thermocouples for Short Duration Transient Measurements
(The American Society of Mechanical Engineers (ASME), 2013)Coaxial thermocouple sensors are suitable for measuring highly transient surface heat fluxes because the response times of these sensors are very small (∼0.1 ms). These robust sensors have the flexibility of mounting ... -
Forced Convection Past a Rotating Sphere: Modeling Oxygen Transport to a Pond Snail Embryo
(The American Society of Mechanical Engineers (ASME), 2013)Helisoma trivolvis pond snail embryos are known for their rotation, which is induced by beating of cilia at the embryo's surface. A common hypothesis links this behavior to enhancing oxygen transfer to the embryo's surface. ... -
Improvement of Forced Convection Cooling Due to the Attachment of Heat Sources to a Conducting Thick Plate
(The American Society of Mechanical Engineers (ASME), 2013)It is proposed that a conductive thick plate is placed between a heat source and a cold flowing fluid to improve the forced convection cooling performance. Detailed numerical work is carried out to determine the optimal ... -
Steady State Performance of a Small Scale Liquid to Air Membrane Energy Exchanger for Different Heat and Mass Transfer Directions, and Liquid Desiccant Types and Concentrations: Experimental and Numerical Data
(The American Society of Mechanical Engineers (ASME), 2013)A liquidtoair membrane energy exchanger (LAMEE) is an energy exchanger that allows heat and moisture transfer between air and salt solution flows through a semipermeable membrane. For the first time, a novel smallscale ... -
Thermal Diffusion and Diffusion Thermo Effects on Peristaltic Flow of Sisko Fluid in Nonuniform Channel With Dissipative Heating
(The American Society of Mechanical Engineers (ASME), 2013)This investigation deals with thermal diffusion and diffusion thermo effects on the peristaltic flow of a Sisko fluid in an asymmetric channel. The mode of dissipative heat transfer is taken into account with nonuniform ... -
Cross Diffusion Effects on Chemically Reacting Magnetohydrodynamic Micropolar Fluid Between Concentric Cylinders
(The American Society of Mechanical Engineers (ASME), 2013)The present study investigates magnetic, firstorder chemical reaction, Soret and Dufour effects on electrically conducting micropolar fluid flow between two circular cylinders. The inner and outer surfaces of the annular ... -
Nonlinear Rayleigh–Bأ©nard Convection With Variable Heat Source
(The American Society of Mechanical Engineers (ASME), 2013)Linear and nonlinear Rayleigh–Bأ©nard convections with variable heat source (sink) are studied analytically using the Fourier series. The strength of the heat source is characterized by an internal Rayleigh number, RI, ... -
Natural Convection of Viscoplastic Fluids in a Square Enclosure
(The American Society of Mechanical Engineers (ASME), 2013)Viscoplastic fluids are special kind of nonNewtonian materials which deform or flow only when applied stresses are more than a critical value known as yield stress. In this work, a numerical investigation of natural ... -
The Effect of Combined Flow and Temperature Maldistribution on Heat Exchangers: Characteristics of Deterioration Factor Ratio, Y
(The American Society of Mechanical Engineers (ASME), 2013)The magnitude of thermal performance degradation factor Dc for a heat exchanger as a result of combining the flow and temperature maldistribution is shown to depend on the magnitude of the shape index, S, and the statistical ... -
Experimental Investigation of Heat Fluxes in the Vicinity of Protuberances on a Flat Plate at Hypersonic Speeds
(The American Society of Mechanical Engineers (ASME), 2013)Heat transfer rates measured in front and to the side of a protrusion on an aluminum flat plate subjected to hypersonic flow at zero angle of attack are presented for two flow enthalpies of approximately 2 MJ/kg and ... -
Falling Film Absorption Around Microchannel Tube Banks
(The American Society of Mechanical Engineers (ASME), 2013)An experimental investigation of heat and mass transfer in a fallingfilm absorber with microchannel tube arrays was conducted. Liquid ammonia–water solution flows in a fallingfilm mode around an array of small diameter ... -
Louver Finned Heat Exchangers for Automotive Sector: Numerical Simulations of Heat Transfer and Flow Resistance Coping With Industrial Constraints
(The American Society of Mechanical Engineers (ASME), 2013)Louvered fins perform better than any other geometry in accomplishing the task of enhancing heat transfer of compact heat exchangers without prohibitive costs and pressure drops. For this reason, they are widely adopted ... -
A Fundamental Study on the Heat Partition Ratio of Vehicle Disk Brakes
(The American Society of Mechanical Engineers (ASME), 2013)The interface tribolayer (ITL) in an automotive brake friction pair is a layer of material created from transfer films, wear particles, and surface transformations between the rotor and stator. Its presence in a brake ... -
Angular Dependency on Film Boiling Heat Transfer From Relatively Long Inclined Flat Plates
(The American Society of Mechanical Engineers (ASME), 2013)The effect of inclination angle of the downward facing flat plate on the interfacial wavy motion is investigated utilizing the water quenching test apparatus downward ebullient laminar transition apparatus flat surface ... -
An Investigation of Pool Boiling Heat Transfer on Single Crystal Surfaces and a Dense Array of Cylindrical Cavities
(The American Society of Mechanical Engineers (ASME), 2013)The pool boiling heat transfer characteristics of smooth single crystal and densely packed cylindrical cavity surfaces were investigated using two highly wetting fluids, perfluoronhexane (FC72) and nhexane. Three single ... -
Molecular Dynamics Simulation of Normal and Explosive Boiling on Nanostructured Surface
(The American Society of Mechanical Engineers (ASME), 2013)Molecular Dynamics (MD) simulation is carried out to investigate the normal and explosive boiling of thin film adsorbed on a metal substrate whose surface is structured by an array of nanoscale spherical particles. The ... -
Analytical Thermal Solution to a Nonuniformly Powered Stack Package With Contact Resistance
(The American Society of Mechanical Engineers (ASME), 2013)The semiconductor industry, following Moore's law, has consistently followed a trajectory of miniaturization that enables design engineers to achieve greater levels of innovation in the same or smaller die footprints. ... -
Suppression of Two Phase Flow Instabilities in Parallel Microchannels by Using Synthetic Jets
(The American Society of Mechanical Engineers (ASME), 2013)Twophase flow instabilities in microchannels exhibit pressure and temperature fluctuations with different frequencies and amplitudes. An active way to suppress the dynamic instabilities in the boiling microchannels is to ... -
Numerical Simulation of Excimer Laser Cleaning of Film and Particle Contaminants
(The American Society of Mechanical Engineers (ASME), 2013)Laser cleaning is a promising surface preparation technique for applications in high value manufacturing industries. However, understanding the effects of laser processing parameters on various types of contaminants and ... -
Extensive Parametric Study of Heat Transfer to Arrays of Oblique Impinging Jets With Phase Change
(The American Society of Mechanical Engineers (ASME), 2013)This work presents the singleand twophase results of a parametric study investigating the performance of oblique jet arrays impinging at 45 deg on a 3.63 cm2 square copper heater surface using R245fa. It was found that ...