Journal of Heat Transfer: Recent submissions
Now showing items 1441-1460 of 3611
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Onset of Convection in a Porous Medium Layer Saturated With an Oldroyd-B Nanofluid
(The American Society of Mechanical Engineers (ASME), 2017)A linear and nonlinear stability analysis of a viscoelastic fluid in a porous medium layer saturated by a nanofluid with thermal conductivity and viscosity dependent on the nanoparticle volume fraction is studied. To ... -
Experimental Studies on Heat Transfer Coefficients of Horizontal Tube Falling Film Evaporation With Seawater
(The American Society of Mechanical Engineers (ASME), 2017)The overall heat transfer process in a horizontal tube falling film evaporator is mainly influenced by the falling film evaporation outside horizontal tube due to the average heat transfer coefficient which is about 50% ... -
Identification of the Thermophysical Properties of the Soil by Inverse Problem
(The American Society of Mechanical Engineers (ASME), 2016)This paper introduces a numerical strategy to estimate the thermophysical properties of a saturated porous medium (volumetric heat capacity (ρC)s, thermal conductivity λs, and porosity ϕ), where a phase change problem ... -
Effective Thermal Conductivity of a Wet Porous Medium—Presence of Hysteresis When Modeling the Spatial Water Distribution for the Pendular Regime
(The American Society of Mechanical Engineers (ASME), 2016)This paper deals with the heat transfer between two spherical grains separated by a small gap; dry air is located around the grains and a liquid water meniscus is supposed to be present between them. This problem can be ... -
Impingement Heat Transfer on a Cylindrical, Concave Surface With Varying Jet Geometries
(The American Society of Mechanical Engineers (ASME), 2016)Jet impingement is often employed within the leading edge of turbine airfoils to combat the heat loads incurred within this region. This experimental investigation employs a transient liquid crystal technique to obtain ... -
Shell-Side Flow Condensation of R410A on Horizontal Tubes at Low-Mass Fluxes
(The American Society of Mechanical Engineers (ASME), 2017)An investigation of refrigerant R410A condensation on a shell and tube heat exchanger simulation is conducted. Tests are on the outside of a horizontal smooth tube, a herringbone tube, and a newly developed three-dimensi ... -
Enhanced Evaporation of Microscale Droplets With an Infrared Laser
(The American Society of Mechanical Engineers (ASME), 2017)Enhancement of water droplet evaporation by added infrared radiation was modeled and studied experimentally in a vertical laminar flow channel. Experiments were conducted on droplets with nominal initial diameters of 50 μm ... -
Experimental Investigation of Local and Average Heat Transfer Coefficients Under an Inline Impinging Jet Array, Including Jets With Low Impingement Distance and Inclined Angle
(The American Society of Mechanical Engineers (ASME), 2017)Comprehensive impingement heat transfer coefficients data are presented with varied Reynolds number, hole spacing, jet-to-target distance, and hole inclination utilizing transient liquid crystal. The impingement configurations ... -
Effect of Temperature Difference on In-Tube Condensation Heat Transfer Coefficients
(The American Society of Mechanical Engineers (ASME), 2017)The effect of temperature difference (Tsat − Tcoolant) on condensation heat transfer coefficients inside horizontal tubes is investigated in detail. Condensation experiments are conducted on propane inside a 7.75 mm ... -
Thermal Homogenization of Electrical Machine Windings Applying the Multiple-Scales Method
(The American Society of Mechanical Engineers (ASME), 2017)Low-order thermal models of electrical machines are fundamental for the design and management of electric powertrains since they allow evaluation of multiple drive cycles in a very short simulation time and implementation ... -
Particle Filter and Approximation Error Model for State Estimation in Hyperthermia
(The American Society of Mechanical Engineers (ASME), 2017)This work deals with numerical simulation of a hyperthermia treatment of skin cancer as a state estimation problem, where uncertainties in the evolution and measurement models, as well as in the measured data, are accounted ... -
Computation of Mixed Convection and Volumetric Radiation in Vertical Channel Based on Hybrid Thermal Lattice Boltzmann Method
(The American Society of Mechanical Engineers (ASME), 2016) -
Unsteady Flow and Heat Transfer Characteristics of Fluid Flow Over a Shrinking Permeable Infinite Long Cylinder
(The American Society of Mechanical Engineers (ASME), 2016)The present work studies the unsteady, viscous, and incompressible laminar flow and heat transfer over a shrinking permeable cylinder. The unsteady nonlinear Navier–Stokes and energy equations are reduced, using similarity ... -
Combined Buoyancy Effects of Thermal and Mass Diffusion on Laminar Mixed Convection in Vertical and Horizontal Semicircular Ducts
(The American Society of Mechanical Engineers (ASME), 2016)The development of laminar mixed convection with heat and mass transfer in vertical and horizontal semicircular ducts has been investigated for the case of thermal boundary conditions of uniform heat input, concentration ... -
Estimating the Thermal Radiative Properties of Shading Nets Under Natural Outdoor Conditions
(The American Society of Mechanical Engineers (ASME), 2016)The perforated nature of nets makes it impossible to measure the thermal radiative properties (emittance, εn, transmittance, τn, and reflectance, ρn) correctly by using any measuring device under natural conditions. In ... -
Enhancement of Thermocapillary Effect in Heated Liquid Films for Large Waves at High Reynolds Numbers
(The American Society of Mechanical Engineers (ASME), 2016)The characteristics of the heated water film flowing down a vertical plate at Re = 150, 300, and 500 were studied. The fluorescence method was used for measuring the film thickness. The temperature field on the film surface ... -
Transient Effects in Evaporating Sessile Drops: With and Without Heating
(The American Society of Mechanical Engineers (ASME), 2016)The evaporation phenomenon of sessile drops has been recently subject to an extensive interest by industry and researchers. This is stimulated by new developments in exploiting this basic process for more industrial ... -
Numerical Simulation of Nanofluid-Cooling Enhancement of Three Fins Mounted in a Horizontal Channel
(The American Society of Mechanical Engineers (ASME), 2016)This article presents a numerical study of two-dimensional laminar mixed convection in a horizontal channel. The upper horizontal wall of the channel is insulated. The governing equations were solved by using the finite ... -
Numerical Investigation of Heat and Mass Transfer During the Desorption Process of a LaNi5–H2 Reactor
(The American Society of Mechanical Engineers (ASME), 2016) -
Hydrodynamic and Thermal Performance of Microchannels With Different In Line Arrangements of Cylindrical Micropin Fins
(The American Society of Mechanical Engineers (ASME), 2016)This study presents results on the hydrodynamic and thermal characteristics of singlephase water flows inside microchannels (MCs) with different micropin fin (MPF) configurations. Different inline arrangements of micropin ...