Journal of Heat Transfer: Recent submissions
Now showing items 1561-1580 of 3611
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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 ... -
Transient Modeling of a Capillary Pumped Loop for Terrestrial Applications
(The American Society of Mechanical Engineers (ASME), 2016)Improvement of a new design for a capillary pumped loop (CPL) ensuring highdissipation electronics cooling in ground transportation has been carried out over recent years. Experimental studies on the hybrid loop, which ... -
Uncertainty Analysis of Melting and Resolidification of Gold Film Irradiated by Nano to Femtosecond Lasers Using Stochastic Method
(The American Society of Mechanical Engineers (ASME), 2016)A samplebased stochastic model is presented to investigate the effects of uncertainties of various input parameters, including laser fluence, laser pulse duration, thermal conductivity constants for electron, and ... -
Modeling the Heat Transfer Coefficient Between a Surface and Fixed and Fluidized Beds With Phase Change Material
(The American Society of Mechanical Engineers (ASME), 2016)The objective of this work is to model the heat transfer coefficient between an immersed surface and fixed and bubbling fluidized beds of granular phase change material (PCM). The model consists of a tworegion model with ... -
On the Boundary Intensities in a Plane Parallel Slab With Linearly Varying Refractive Index
(The American Society of Mechanical Engineers (ASME), 2016)An exact expression of the outgoing boundary intensities in the case of a gray nonscattering semitransparent medium (STM) confined in a plane parallel slab with a refractive index linearly depending on the position is ... -
Multiscale Computational Fluid Dynamics Methodology for Predicting Thermal Performance of Compact Heat Exchangers
(The American Society of Mechanical Engineers (ASME), 2016)Computational fluid dynamics (CFD) is a powerful tool for analyzing the performance of heat exchangers. However, such an approach may be often limited by unaffordable computational time. In this paper, a multiscale CFD ... -
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 ... -
Thermal and Mechanical Modeling of Metal Foams for Thermal Interface Application
(The American Society of Mechanical Engineers (ASME), 2016)We present a study on the apparent thermal resistance of metal foams as a thermal interface in electronics cooling applications. Metal foams are considered beneficial for several applications due to its significantly large ... -
Droplet Departure Characteristics and Dropwise Condensation Heat Transfer at Low Steam Pressure
(The American Society of Mechanical Engineers (ASME), 2016)Dropwise condensation has received significant attention due to its great potential to enhance heat transfer by the rapid droplet removal. In this work, droplet departure characteristics on a vertical surface, especially ... -
Measurement of Thermal and Electrical Properties of Multiwalled Carbon Nanotubes–Water Nanofluid
(The American Society of Mechanical Engineers (ASME), 2016)The use of high conductive nanoparticles, such as carbon nanotubes (CNT), enhances the thermal and electrical conductivities of the carrier fluid. Depending upon the volumetric concentration of particles and their distribution ... -
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, خµn, transmittance, د„n, and reflectance, دپn) correctly by using any measuring device under natural conditions. In ... -
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 ... -
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)The present paper presents a numerical study of mixed convection coupled with volumetric radiation in a vertical channel. The geometry of the physical model consists of two isothermal plates. The governing equations of the ... -
Three Dimensional Steady and Oscillatory Natural Convection in a Rectangular Enclosure With Heat Sources
(The American Society of Mechanical Engineers (ASME), 2016)In this paper, a numerical study of threedimensional (3D) natural convection aircooling of two identical heat sources, simulating electronic components, mounted in a rectangular enclosure was carried out. The governing ... -
Geometrical Optimization and Experimental Validation of a Tripod Film Cooling Hole With Asymmetric Side Holes
(The American Society of Mechanical Engineers (ASME), 2016)A tripod cylindrical film hole with asymmetric side holes is studied numerically and experimentally on a flat plate for higher film cooling effectiveness. First, the influences of geometrical parameters are studied and the ... -
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 (دپC)s, thermal conductivity خ»s, and porosity د•), where a phase change problem ... -
A New Stabilized Finite Element Formulation for Solving Radiative Transfer Equation
(The American Society of Mechanical Engineers (ASME), 2016)A new stabilized finite element formulation for solving radiative transfer equation is presented. It owns the salient feature of leastsquares finite element method (LSFEM), i.e., free of the tuning parameter that appears ... -
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 twodimensional 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 ... -
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 ... -
The Effect of Spatially Nonuniform Internal Heating on the Onset of Convection in a Horizontal Fluid Layer
(The American Society of Mechanical Engineers (ASME), 2016)In this paper, we investigated the onset of natural convection in a horizontal fluid layer due to nonuniform internal heat generation, which is relevant to a number of geophysical situations. We investigated a number of ...