Journal of Heat Transfer: Recent submissions
Now showing items 1421-1440 of 3611
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Thin Film Condensation Supported on Ambiphilic Microstructures
(The American Society of Mechanical Engineers (ASME), 2017)Ambiphilic surfaces have been used to support thin liquid films during condensation and imaged using environmental scanning electron microscopy (ESEM). Ambiphilic microstructures (a) are comprised of hydrophilic deep etched ... -
Thermal Hydraulic Analysis of China Spallation Neutron Source Target System Under Abnormal Situations
(The American Society of Mechanical Engineers (ASME), 2017)The analysis of thermal hydraulic performance under three abnormal conditions is very important for the design of China spallation neutron source (CSNS) target system, which could provide some important information for ... -
Springboard Droplet Bouncing on Flexible Superhydrophobic Substrates
(The American Society of Mechanical Engineers (ASME), 2017)Droplet impact on rigid, superhydrophobic surfaces follows the well-known spreading, recoil, and lift-off behavior at lower impact speeds (a), and splashing at higher impact speeds (b). The contact time tc of these bouncing ... -
Atomic Force Microscopy (AFM) as a Powerful Tool to Study Temperature-Dependent Polymer Film Formation
(The American Society of Mechanical Engineers (ASME), 2017)Atomic force microscopy (AFM) is one of the most effective tools in nanotechnology researches. Using the raster scanning method with a soft cantilever, three dimensional sample surface topography can be obtained with a ... -
High Speed SPR Visualization of Frost Propagation Inside a Subcooled Water Droplet
(The American Society of Mechanical Engineers (ASME), 2017)A surface plasmon resonance (SPR) imaging microscopy coupled to a high-speed camera is used to visualize the frost propagation inside a subcooled liquid droplet. The SPR experimental setup consists of a 50 nm thick gold-coated ... -
Effects of Heat Transfer During Peristaltic Transport in Nonuniform Channel With Permeable Walls
(The American Society of Mechanical Engineers (ASME), 2017)In the present investigation, problem of heat transfer has been studied during peristaltic motion of a viscous incompressible fluid for two-dimensional nonuniform channel with permeable walls under long wavelength and low ... -
Sector Rotating Heat Pipe With Interconnected Branches and Reservoir for Turbomachinery Cooling
(The American Society of Mechanical Engineers (ASME), 2017)Heat pipe technology offers a possible cooling technique for structures exposed to high heat fluxes, as in turbomachinery such as compressors and turbines. However, in its current configuration as single heat pipes, ... -
Heat Transfer Photogallery
(The American Society of Mechanical Engineers (ASME), 2017) -
Focal Plane Shift Imaging for the Analysis of Multi-Droplet Jumping
(The American Society of Mechanical Engineers (ASME), 2017)High speed images of coalescence induced three-droplet jumping on a nanostructured superhydrophobic carbon nanotube (CNT) surface are presented (θaapp ≈ 173º). When two or more droplets coalesce on a nanostructured ... -
Effect of Dual Frequency Ultrasound on the Bubble Formation in a Capillary Tube
(The American Society of Mechanical Engineers (ASME), 2017)A visual experimental investigation was conducted to determine the effect of dual frequency ultrasound on the bubble formation and growth in a capillary quartz tube. Two piezoelectric ceramics were used in this experiment. ... -
Orientation Effects on Pool Boling of Microporous Coating in Water
(The American Society of Mechanical Engineers (ASME), 2017)Copper HTCMC (High-temperature, Thermally Conductive Microporous Coating) with a coating thickness of ~300 µm was created by sintering 67 µm copper particles onto a flat copper surface. This was shown to be the optimum ... -
Numerical Simulation of Evaporating Two-Phase Flow in a High-Aspect-Ratio Microchannel with Bends
(The American Society of Mechanical Engineers (ASME), 2017)Despite the demand for high-performance, two-phase cooling systems, high-fidelity simulations of flow boiling in complex microchannel geometries remains a challenging numerical problem. We conduct a first-principles-based ... -
Heat Transfer and Entropy Generation Analyses of Forced Convection Through Porous Media Using Pore Scale Modeling
(The American Society of Mechanical Engineers (ASME), 2017)The objective of the current investigation is to investigate the entropy generation inside porous media utilizing a pore scale modeling approach. The current investigation improves the thermodynamics performance of the ... -
Steady Finite-Amplitude Rayleigh–Bénard Convection in Nanoliquids Using a Two-Phase Model: Theoretical Answer to the Phenomenon of Enhanced Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2017)Rayleigh–Bénard convection in liquids with nanoparticles is studied in the paper considering a two-phase model for nanoliquids with thermophysical properties determined from phenomenological laws and mixture theory. In the ... -
Predicting the Effective Emissivity of an Array of Aligned Carbon Fibers Using the Reverse Monte Carlo Ray-Tracing Method
(The American Society of Mechanical Engineers (ASME), 2017)This study investigates the bulk radiative properties of absorbing and scattering fibers. This type of problem can be applied to a group of geometrically similar applications including thermal radiators, insulation, and ... -
Unsteady Natural Convection Heat Transfer Past a Vertical Flat Plate Embedded in a Porous Medium Saturated With Fractional Oldroyd-B Fluid
(The American Society of Mechanical Engineers (ASME), 2017)This paper investigates natural convection heat transfer of generalized Oldroyd-B fluid in a porous medium with modified fractional Darcy's law. Nonlinear coupled boundary layer governing equations are formulated with ... -
Improved MSMGFSK Models Apply to Gas Radiation Heat Transfer Calculation of Exhaust System of TBCC
(The American Society of Mechanical Engineers (ASME), 2017)The multiscale multigroup full-spectrum k-distribution (MSMGFSK) model was improved to adapt to radiation heat transfer calculations of combustion gas flow field with large temperature and pressure gradient. The improvements ... -
On the Radiative Heat Transfer in a Viscoelastic Boundary Layer Flow Over a Stretching Sheet
(The American Society of Mechanical Engineers (ASME), 2017)Many researchers have studied the radiative heat transfer in a viscoelastic boundary layer flow over a stretching sheet after simplifying the complex nature of the radiative heat flux by expanding the fourth power of ... -
Experimental Investigation of Transitional Natural Convection in a Cube Using Particle Image Velocimetry—Part I: Fluid Flow and Thermal Fields
(The American Society of Mechanical Engineers (ASME), 2017)An experimental investigation of transitional natural convection in an air filled cube was conducted in this research. The characteristic dimension of the enclosure is 0.35 m, and data were collected in the middle plane ... -
Experimental Investigation of Transitional Natural Convection in a Cube Using Particle Image Velocimetry—Part II: Turbulence Quantities and Proper Orthogonal Decomposition
(The American Society of Mechanical Engineers (ASME), 2017)An experimental investigation of transitional natural convection in an air filled cube was conducted in this research. The characteristic dimension of the enclosure was H = 0.35 m, and data were collected in the middle ...