Journal of Heat Transfer: Recent submissions
Now showing items 1381-1400 of 3611
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Dropwise Condensation on/in High Roughness Structures
(The American Society of Mechanical Engineers (ASME), 2017)Water droplets on bio-mimicked hierarchical roughness exhibit superhydrophobic properties, such as large contact angles, minor dynamic hysteresis, and high mobility. Vapor condensation on such superhydrophobic surface ... -
Interaction of Asymmetric Films Around Boiling Cylinder Array: Homogeneous Interface to Chaotic Phenomenon
(The American Society of Mechanical Engineers (ASME), 2017)We report numerical study of film boiling around hot and horizontal cylinders in a saturated water pool to establish interfacial interactions leading toward dryout. Volume of fluid-based finite-volume discretization is ... -
Homogeneous–Heterogeneous Reactions in Boundary-Layer Flow of a Nanofluid Near the Forward Stagnation Point of a Cylinder
(The American Society of Mechanical Engineers (ASME), 2017)A mathematical model describing the homogeneous–heterogeneous reactions in the vicinity of the forward stagnation point of a cylinder immerged in a nanofluid is established. We assume that the homogeneous reaction is given ... -
Magnetohydrodynamics Mixed Convection Flow of a Nanofluid in an Isothermal Vertical Cone
(The American Society of Mechanical Engineers (ASME), 2017)A boundary layer analysis is laid out for the steady, laminar, mixed convection flow past an isothermal vertical cone embedded in a porous medium filled with a nanofluid. The model used for the nanofluid is one which ... -
Heat Transfer and Flow Characteristics of Two-Pass Parallelogram Channels With Attached and Detached Transverse Ribs
(The American Society of Mechanical Engineers (ASME), 2017)The full-field Nusselt number (Nu) distributions and flow fields are presented, respectively, using steady-state infrared thermography (IR) and particle image velocimetry (PIV) in the two-pass parallelogram channels with ... -
Simultaneous Spreading and Solidification of an Impacting Molten Droplet With Substrate Remelting
(The American Society of Mechanical Engineers (ASME), 2017)The nonisothermal phase-change behavior of droplet deposition on a substrate has been studied. The governing equation for the flow field is solved using a finite-volume scheme with a two-step projection method on a fixed ... -
A Probability Model for Fully Developed Annular Flow in Vertical Pipes: Film Thickness, Interfacial Shear Stress, and Droplet Size Distribution
(The American Society of Mechanical Engineers (ASME), 2017)The movement and distribution of each phase in annular flow can be considered as random events at a microscopic level. Hence, a probability analysis is appropriate to estimate the morphological features and mechanical ... -
Simulation of Phonon Transport in Semiconductors Using a Population-Dependent Many-Body Cellular Monte Carlo Approach
(The American Society of Mechanical Engineers (ASME), 2017)A Monte Carlo rejection technique for numerically solving the complete, nonlinear phonon Boltzmann transport equation (BTE) is presented in this work, including three particles interactions. The technique has been developed ... -
Thermal Analysis of Power-Law Fluid Flow in a Circular Microchannel
(The American Society of Mechanical Engineers (ASME), 2017)The steady-state fully developed laminar flow of non-Newtonian power-law fluids is analytically studied in a circular microchannel under an imposed uniform and constant wall heat flux. Increasing the flow behavior index ... -
Modeling of Spectral Properties and the Scattering Phase Function for Lightweight Heat Protection Spacecraft Materials
(The American Society of Mechanical Engineers (ASME), 2017)This work gives a brief description of the statistical model that takes into account when calculating the physical, in particular, the optical properties of some ultraporous nonmetallic high-temperature materials, the real ... -
Natural Convection Heat Transfer From Vertical 5 × 5 Rod Bundles in Liquid Sodium
(The American Society of Mechanical Engineers (ASME), 2017)Natural convection heat transfer from vertical 5 × 5 rod bundles in liquid sodium was numerically analyzed for two types of the bundle geometry (equilateral square array (ESA) and equilateral triangle array (ETA)). The ... -
Influence of Uniform Blowing/Suction on the Free Convection of Non-Newtonian Fluids Over a Vertical Cone in Porous Media With Thermal Radiation and Soret/Dufour Effects: Uniform Wall Temperature/Uniform Wall Concentration
(The American Society of Mechanical Engineers (ASME), 2017)This work studies numerically the combined heat and mass transfer of uniform blowing/suction, non-Newtonian power-law fluid, and thermal radiation effects on free convection adjacent to a vertical cone within a porous ... -
Computational Models for Nanoscale Fluid Dynamics and Transport Inspired by Nonequilibrium Thermodynamics1
(The American Society of Mechanical Engineers (ASME), 2017)Traditionally, the numerical computation of particle motion in a fluid is resolved through computational fluid dynamics (CFD). However, resolving the motion of nanoparticles poses additional challenges due to the coupling ... -
Convective Heat Transfer of Al2O3 Nanofluids in Porous Media
(The American Society of Mechanical Engineers (ASME), 2017)In this study, the performance of a heat sink embedded with a porous medium and nanofluids as coolants is analyzed experimentally. The nanofluid is a mixture of de-ionized water and nanoscale Al2O3 particles with three ... -
A Generalized Enhanced Fourier Law
(The American Society of Mechanical Engineers (ASME), 2017)A generalized enhanced Fourier law (EFL) that accounts for quasi-ballistic phonon transport effects in a formulation entirely in terms of physical observables is derived from the Boltzmann transport equation. It generalizes ... -
Numerical Solutions of Natural Convection Flow of a Dusty Nanofluid About a Vertical Wavy Truncated Cone
(The American Society of Mechanical Engineers (ASME), 2017)This paper reports the numerical results for the natural convection flow of a two-phase dusty nanofluid along a vertical wavy frustum of a cone. The general governing equations are transformed into parabolic partial ... -
Enhanced Photon Tunneling by Surface Plasmon–Phonon Polaritons in Graphene/hBN Heterostructures
(The American Society of Mechanical Engineers (ASME), 2017)Enhancing photon tunneling probability is the key to increasing the near-field radiative heat transfer between two objects. It has been shown that hexagonal boron nitride (hBN) and graphene heterostructures can enable ... -
Cross-Diffusion Effects on Unsteady Bioconvective Flow Past a Stretching Sheet
(The American Society of Mechanical Engineers (ASME), 2017)This paper presents a mathematical analysis of bioconvection heat, mass, and motile microorganisms transfer over a stretching sheet in a medium filled with a fluid containing gyrotactic microorganisms. Cross-diffusion is ... -
Uncertainty Analysis of the Core Body Temperature Under Thermal and Physical Stress Using a Three-Dimensional Whole Body Model
(The American Society of Mechanical Engineers (ASME), 2017)Heat stress experienced by firefighters is a common consequence of extreme firefighting activity. In order to avoid the adverse health conditions due to uncompensable heat stress, the prediction and monitoring of the thermal ... -
Immersed Boundary Method for Radiative Heat Transfer Problems in Nongray Media With Complex Internal and External Boundaries
(The American Society of Mechanical Engineers (ASME), 2017)The immersed boundary method (IBM) is gaining attention in the computational fluid dynamics but its applications in the field of a conjugated radiative–conductive or radiative–convective heat transfer seem limited. Therefore, ...