Journal of Heat Transfer: Recent submissions
Now showing items 1481-1500 of 3611
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A New Approach to Thermal Analysis of a Multilayered Cylindrical Structure With Imperfect Bonds and Internal Heat Source
(The American Society of Mechanical Engineers (ASME), 2016)In the present research, a new and straightforward mathematical model, named augmented statespace method, is introduced to solve the heat conduction equation for a multilayered orthotropic hollow cylinder with bonding ... -
Prof. Em. Dr. Ing. Dr. Ing. E.h. mult. Franz Mayinger on His 85th Birthday
(The American Society of Mechanical Engineers (ASME), 2016)During 1956–1961, Professor Franz Mayinger started his professional life as a research assistant at the “Lehrstuhl†(chair) and Institute of Thermodynamics at the Technische Universitأ¤t Mأ¼nchen (the Munich Technical ... -
Evaporative Characteristics of Al2O3 Nanofluid Droplet on Heated Surface
(The American Society of Mechanical Engineers (ASME), 2016)The present study experimentally investigates the evaporative characteristics for a nanofluid droplet on heated surface.For experiments, the alumina (Al2O3) nanoparticles having a 50 nm average diameter were distributed ... -
Experimental and Numerical Visualization of Counter Rotating Vortices
(The American Society of Mechanical Engineers (ASME), 2016)Visualization of the flow structure generated by passive vortex generators continues to be a matter of research in the fluid mechanics and heat transfer communities. In this study, selfsustaining counterrotating vortex ... -
Examining Liquid Hydrogen Wettability Using Neutron Imaging
(The American Society of Mechanical Engineers (ASME), 2016)The control of propellant boiloff is essential in longterm space missions. However, a clear understanding of propellant cryogenic condensation/evaporation in microgravity is lacking. One of the key factors in designing ... -
Controlled Wetting in Nanoporous Membranes for Thin Film Evaporation
(The American Society of Mechanical Engineers (ASME), 2016)With the ever increasing cooling demands of advanced electronics, thin film evaporation has emerged as one of the most promising thermal management solutions. High heat transfer rates can be achieved in thin films of liquids ... -
Simultaneous Boiling Visualization and Heat Transfer Measurement of Two Adjacent Water Impinging Jets
(The American Society of Mechanical Engineers (ASME), 2016)The effect of jettojet distance of two adjacent jets on boiling heat transfer was investigated by a simultaneous boiling visualization and heat transfer measurement. The hydrodynamics of two adjacent jets were visualized ... -
Effects of Screen Laminates on Droplet Induced Film Hydrodynamics and Surface Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2016)Formation of dryout area could lead to a sharp increase in surface temperature during droplet impingement cooling. The objective of this study is to figure out an effective way of suppressing dryout formation in droplet ... -
High Speed Surface Plasmon Resonance (SPR) Reflectance Imaging of Drop Coalescence during Condensation and Evaporation
(The American Society of Mechanical Engineers (ASME), 2016)Drop condensation and coalescence is visualized using highspeed Surface Plasmon Resonance (SPR) reflectance microscopy. SPR microscopy is a labelfree technique that can characterize thin films (less than 1آµm) by detecting ... -
Thermal Performance of Liquid Metal Alloy with Graphene Addition as Thermal Interface Material
(The American Society of Mechanical Engineers (ASME), 2016)A high thermal conductivity thermal paste can be developed by mixing the oxidized liquid metal alloy (OLMA) with graphene. Four kinds of grapheneOLMA pastes were synthesized at graphene concentrations of 0.25 wt%, 0.75 ... -
Suppressed Dry out in Two Phase Microchannels via Surface Structures
(The American Society of Mechanical Engineers (ASME), 2016)We demonstrated suppressed dryout on structured surfaces during flow boiling in microchannels. We designed and fabricated microchannels with welldefined silicon micropillar arrays (heights of ~25 آµm, diameters of 10 آµm ... -
Drop Impact Variation at the Extremes of Wettability
(The American Society of Mechanical Engineers (ASME), 2016)Depicted are sequences of water drop impacts on copper, taken at 16,000 fps. The copper is treated with a heated alkali solution, resulting in a highly wetting, nanoscale structured, cupric oxide layer with a static contact ... -
Temperature Uniformity Improvement of an Air Cooled High Power Lithium Ion Battery Using Metal and Nonmetal Foams
(The American Society of Mechanical Engineers (ASME), 2016)In order to improve the temperature uniformity inside the battery, the effects of partially utilizing metal and nonmetal materials on the heat sink of an aircooled Lithiumion (Liion) battery module were studied. Aluminum ... -
Effect of Wettability on Pool Boiling Incipience in Saturated Water
(The American Society of Mechanical Engineers (ASME), 2016)Three different copper surfaces bare, Al2O3 nanocoated, and Polytetrafluoroethylene (PTFE) coated are prepared and tested to examine the effect of wettability on the pool boiling incipience in saturated water at 1 atm. A ... -
Exact Closed Form Solution of the Nonlinear Fin Problem With Temperature Dependent Thermal Conductivity and Heat Transfer Coefficient
(The American Society of Mechanical Engineers (ASME), 2016)In the current paper, the nonlinear fin problem with temperaturedependent thermal conductivity and heat transfer coefficient is revisited. In this problem, it has been assumed that the heat transfer coefficient is expressed ... -
A Comparative Study of Flow Boiling in a Microchannel With Piranha Pin Fins
(The American Society of Mechanical Engineers (ASME), 2016)In this paper, we report on the recent development of an advanced microscale heat sink, termed as piranha pin fin (PPF). A 200 خ¼m deep microchannel embedded with PPFs was fabricated and tested. Fluid flow and heat ... -
Role of Chamfering Angles and Flow Through Slit on Heat Transfer Augmentation Behind a Surface Mounted Rib
(The American Society of Mechanical Engineers (ASME), 2016)Detailed heat transfer and flow field investigations behind a surfacemounted slitted trapezoidal rib have been performed using liquid crystal thermography (LCT) and particle image velocimetry (PIV). In the accomplished ... -
Heat Transfer and Boiling Crisis at Droplets Evaporation of Ethanol Water Solution
(The American Society of Mechanical Engineers (ASME), 2016)Droplets evaporation and boiling crisis of ethanol water solution were studied experimentally. At intensive nucleate boiling within a droplet, most evaporation relates to an increase in the area of the wetting droplet ... -
Thermal Diffraction of Binary Fluids With Metal Nanoparticles
(The American Society of Mechanical Engineers (ASME), 2016)A laser propagating through a metal nanocolloid exhibits a farfield fringe pattern that is the signature of its optical and thermally induced response. Here, we directly exploit the sensitive farfield features to measure ... -
Effects of Joule Heating and Convective Boundary Conditions on Magnetohydrodynamic Peristaltic Flow of Couple Stress Fluid
(The American Society of Mechanical Engineers (ASME), 2016)Peristaltic motion of couplestress fluid with Joule heating through asymmetric channel under the effect of magnetic field is investigated. Robintype (convective) boundary conditions are employed. The basic equations of ...