Journal of Heat Transfer: Recent submissions
Now showing items 1601-1620 of 3611
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Thermal Convection of a Non Fourier Fluid in a Vertical Slot
(The American Society of Mechanical Engineers (ASME), 2016)The instability of steady natural convection of a nonFourier fluid of the singlephase lagging (SPL) type between two vertical surfaces maintained at different temperatures is studied. SPL fluids possess a relaxation time, ... -
Low Temperature Melting of Silver Nanoparticles in Subcooled and Saturated Water
(The American Society of Mechanical Engineers (ASME), 2016)Continuous, laserheated boiling heat transfer experiments with silver nanofluids were conducted to identify the nonequilibrium melting behavior of silver nanoparticles in deionized (DI) water. Experimental results with ... -
Thermal Instability in a Rotating Vertical Porous Layer Saturated by a Nanofluid
(The American Society of Mechanical Engineers (ASME), 2016)An analytical investigation of the onset on convection in a vertical porous layer saturated by a nanofluid is presented. The Darcy model is used for the vertical porous layer and a linear stability analysis is used to ... -
Weakly Nonlinear Oscillatory Convection in a Rotating Fluid Layer Under Temperature Modulation
(The American Society of Mechanical Engineers (ASME), 2016)A study of thermal instability driven by buoyancy force is carried out in an initially quiescent infinitely extended horizontal rotating fluid layer. The temperature at the boundaries has been taken to be timeperiodic, ... -
Influence of Microscale Surface Modification on Impinging Flow Heat Transfer Performance
(The American Society of Mechanical Engineers (ASME), 2016)An experimental approach has been used to investigate the influence of a thin layer of carbon nanotubes (CNTs) on the convective heat transfer performance under impinging flow conditions. A successful synthesis of CNT ... -
Similarity Solutions of Unsteady Three Dimensional Stagnation Flow and Heat Transfer of a Viscous, Compressible Fluid on an Accelerated Flat Plate
(The American Society of Mechanical Engineers (ASME), 2016)The most general form of the problem of stagnationpoint flow and heat transfer of a viscous, compressible fluid impinging on a flat plate is solved in this paper. The plate is moving with a constant or timedependently ... -
Heat Transfer During Near Critical Pressure Condensation of Refrigerant Blends
(The American Society of Mechanical Engineers (ASME), 2016)Heat transfer during condensation of refrigerant blends R404A and R410A flowing through horizontal tubes with 0.76 ≤ D ≤ 9.4 mm at nominal Pr = 0.8–0.9 was investigated. Local heat transfer coefficients ... -
Analysis of Conjugate Heat Transfer for a Combined Turbulent Wall Jet and Offset Jet
(The American Society of Mechanical Engineers (ASME), 2016)This paper presents a study of the conjugate heat transfer, involving conduction through a solid slab and turbulent convection in fluid, for a combined turbulent wall jet and offset jet flow using unsteady Reynolds averaged ... -
Frosting Characteristics on Hydrophilic and Superhydrophobic Copper Surfaces
(The American Society of Mechanical Engineers (ASME), 2016)The main objective of this study is to examine the frosting characteristics affected by the surface wettability. Two different copper surfaces – bare and nano structured were prepared for the experiments. Their static ... -
Effects of Droplet Diameter and Fluid Properties on the Leidenfrost Temperature of Polished and Micro/Nanostructured Surfaces
(The American Society of Mechanical Engineers (ASME), 2016)An experimental investigation of the effects of droplet diameters and fluid properties on the Leidenfrost temperature of polished and nano/microstructured surfaces has been carried out. Leidenfrost experiments were conducted ... -
3D Printing of Instantaneous Turbulent Flame Shapes, Experimentally Captured by 3D Computer Tomography and Multi Directional Schlieren Photography
(The American Society of Mechanical Engineers (ASME), 2016)Nonscanning 3DCT(Computer Tomography) technique employing a multidirectional quantitative schlieren photographic system(topleft picture) with flash light source, has been performed to obtain instantaneous density distributions ... -
Thermal wave imaging of microelectronics
(The American Society of Mechanical Engineers (ASME), 2016)Thermal waves can reveal thermal properties of different layers forming a multilayer structure. If the thickness of each layer is known, specific ranges of thermal wave frequencies can be implemented to study the thermal ... -
Innovative Nanostructured Wicks for Heat Pipes
(The American Society of Mechanical Engineers (ASME), 2016)A good wicking structure is necessary for the design of a highly efficient heat pipe. Several unique aluminum oxide nanostructures were developed as wicks for heat pipes. The wicks were manufactured via an anodization ... -
Boiling Visualization of Two Adjacent Impinging Jets on Hot Steel Plate
(The American Society of Mechanical Engineers (ASME), 2016)The simultaneous measurement between the boiling visualization and the boiling heat transfer characteristics by two adjacent impinging jets on hot steel plate was made by the experimental technique that has a function of ... -
Visualization of the Evaporating Liquid Vapor Interface in Micropillar Arrays
(The American Society of Mechanical Engineers (ASME), 2016)We captured interesting static and dynamic behavior of the liquidvapor interface in welldefined silicon micropillar arrays during thermally driven evaporation of water from the microstructured surface. The 3D shape of the ... -
Mapping Thickness Dependent Thermal Conductivity of GaN
(The American Society of Mechanical Engineers (ASME), 2016)Frequency domain thermoreflectance (FDTR) is used to create quantitative maps of thermal conductivity and thickness for a thinning gallium nitride (GaN) film on silicon carbide (SiC). GaN was grown by molecular beam epitaxy ... -
Visualization of Terrain induced Slugging in W shaped Pipeline
(The American Society of Mechanical Engineers (ASME), 2016)Gasliquid twophase flow in a circular pipeline is commonly encountered in an inclined pipeline of an offshore plant. To visualize gasliquid flow phenomena in an inclined pipeline, the wshaped transparent pipeline was ... -
Flow Visualization of Submerged Steam Jet in Subcooled Water
(The American Society of Mechanical Engineers (ASME), 2016)Steam discharged into subcooled water is investigated experimentally to demonstrate the direct contact condensation phenomena in nuclear reactor safety system and underwater propulsion apparatus. The steam jet condenses ... -
Effects of High Frequency Droplet Train Impingement on Spreading Splashing Transition, Film Hydrodynamics and Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2016)The objective of this study is to investigate the effects of dropletinduced crown propagation regimes (spreading and splashing) on liquid film hydrodynamics and heat transfer. In this work, the effects of high frequency ... -
Effects of High Frequency Droplet Train Impingement on Crown Propagation Dynamics and Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2016)The objective of this study is to investigate the hydrodynamics and heat transfer phenomena due to high frequency droplet train impingement on a prewetted solid surface for electronic cooling applications. The effects of ...