Journal of Heat Transfer: Recent submissions
Now showing items 481-500 of 3611
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Pore-Scale Study of the Thermochemical Process in Porous Media With Immiscible Phase by Lattice Boltzmann Method
(The American Society of Mechanical Engineers (ASME), 2020)Reactive flow happens in carbonate rocks which are porous media during acidification. In this study, a thermochemical dissolution model based on the lattice Boltzmann method (LBM) is established to investigate the complex ... -
The Onset of Double-Diffusive Convection in a Two-Layer System With a Viscoelastic Fluid-Saturated Porous Medium Under High-Frequency Vibration
(The American Society of Mechanical Engineers (ASME), 2020)The effect of high frequency vibration in the gravity field on the double-diffusive convection in a two-layer system with a viscoelastic fluid-saturated porous layer is studied. The averaging method is employed to split ... -
An Experimental Investigation of Constrained Melting Heat Transfer of Nano-Enhanced Phase Change Materials in a Horizontal Cylindrical Capsule Using Thermochromic Liquid Crystal Thermography
(The American Society of Mechanical Engineers (ASME), 2020)The constrained melting of nano-enhanced phase change materials (NePCM) in a horizontal cylindrical capsule was investigated via the utilization of thermochromic liquid crystal (TLC) technique for tracking the invisible ... -
An Experimental Study of Sister Holes Film Cooling With Various Secondary-to-Primary Hole Diameter Ratios
(The American Society of Mechanical Engineers (ASME), 2020)For increased specific thrust and efficiency, more effective film-cooling schemes are developed with each successive gas turbine design. Adding secondary film-cooling holes to each primary film-cooling hole represents such ... -
Evaluation of Grad's Second Problem Using Different Higher Order Continuum Theories
(The American Society of Mechanical Engineers (ASME), 2020)In our earlier work (Jadhav, and Agrawal, 2020, “Grad's second problem and its solution within the framework of Burnett hydrodynamics,” ASME J. Heat Transfer, 142(10), p. 102105), we proposed Grad's second problem (examination ... -
Multicriteria Optimization of an Oven With a Novel ε-Constraint-Based Sandwiching Method
(The American Society of Mechanical Engineers (ASME), 2020)Oven curing of automotive parts is a complex industrial process involving multiple scales ranging from submillimeter thick layers to the size of the ovens, and long curing times. In this work, the process is simulated by ... -
Investigation of Heat Transfer Characteristics in a Rotating Convection System With Bi-Directional Thermal Gradients
(The American Society of Mechanical Engineers (ASME), 2020)A series of rotating convection experiments have been conducted in a novel configuration, which comprises a cylindrical annulus with spot heating on the bottom outer edge and uniform cooling on the inner surface. Such a ... -
Investigation on the Radial Heat-Transfer of Pumping Secondary Flow in Semiclosed Rotating Disk Cavity
(The American Society of Mechanical Engineers (ASME), 2020)This study investigates the mean flow and radial heat-transfer behaviors in semiclosed rotating disk cavity within the canned reactor coolant pump. The flow in the semiclosed cavity contains the Stewartson type flow at ... -
A Hybrid Numerical-Experimental Method for Determining Thermal Conductivities
(The American Society of Mechanical Engineers (ASME), 2020)Determining the thermal conductivity of a material from temperature measurements in a cooling or heating process belongs to the class of inverse problems. In this article, we present a method for a simple experimental ... -
An Experimental Study on Segmented-Encapsulated Electrode Dielectric-Barrier-Discharge Plasma Actuator for Mapping Ice Formation on a Surface: A Conceptual Analysis
(The American Society of Mechanical Engineers (ASME), 2020)A novel design of the dielectric barrier discharge (DBD) actuator/sensor is proposed for mapping the location of icing on a surface. The new design uses segmentation of the embedded electrode of the DBD actuator. Segmented ... -
Pore-Scale Simulation on Pool Boiling Heat Transfer and Bubble Dynamics in Open-Cell Metal Foam by Lattice Boltzmann Method
(The American Society of Mechanical Engineers (ASME), 2020)Based on the newly developed geometrical model of open-cell metal foam, pool boiling heat transfer in open-cell metal foam, considering thermal responses of foam skeletons, is investigated by the phase-change lattice ... -
Analytical Modeling for Vapor Condensation in the Presence of Noncondensable Gas and Experimental Validation
(The American Society of Mechanical Engineers (ASME), 2020)The sensible and latent heat transfer are two essential considerations in investigating vapor condensation in the presence of noncondensable gases. In this paper, a new model for filmwise condensation heat transfer was ... -
Thermal-Hydraulic Performance of Circular Electronic Components With Parabolic and Hyperbolic Front Facing the Upstream Flow
(The American Society of Mechanical Engineers (ASME), 2020)Thermal management of equipment is a very crucial step for optimum operation. This study is aimed at modifying the shape of traditionally circular electronic components to enhance their thermal-hydraulic performance. The ... -
Metrics Matter: Accurately Defining Energy Efficiency in Desalination
(The American Society of Mechanical Engineers (ASME), 2020)Energy cost contributes a large portion of the overall cost of desalinated water. Improving the energy efficiency of desalination plants is therefore a primary design goal. However, accurately evaluating and comparing the ... -
Capillary Instability of Viscoelastic Liquid Film With Heat and Mass Transfer
(The American Society of Mechanical Engineers (ASME), 2020)This paper examines the effect of transfer of heat and mass on the capillary instability between a viscoelastic liquid and a viscous gas. The viscoelastic liquid obeys the Oldroyd B-model. These two fluid layers considered ... -
Study of Magnetic Field Effects on the Oxygen Transfer in Liquid Lead Cavity Flow Using the Lattice Boltzmann Method
(The American Society of Mechanical Engineers (ASME), 2020)Natural convection and oxygen transfer characteristics in square cavity subjected to the magnetic field are studied numerically. Oxygen transfer in liquid metals has attracted much attention because it can decrease the ... -
Optimization of the Width of Vapor Chamber Regions by Using Particle Swarm Optimization Method
(The American Society of Mechanical Engineers (ASME), 2020)An optimization of vapor chamber (VC) region's width and its wick porosity to achieve the minimum temperature rise of the vapor chamber is studied in this paper. The optimization process is carried out by particle swarm ... -
Experimental Investigation of a U-Tube Performance Using Nanoferrofluids Under the Effect of Magnetic Fields
(The American Society of Mechanical Engineers (ASME), 2020)The effects of nanoferrofluids on the overall performance of curved tubes (with various radii of curvature) are experimentally investigated under the influence of constant and alternating magnetic fields. The working fluids ... -
Dynamics of Growth and Breakup of an Evaporating Pendant Drop
(The American Society of Mechanical Engineers (ASME), 2020)The growth and pinch-off dynamics of an evaporating pendant drop have been studied through direct numerical simulations. A coupled level-set and volume-of-fluid method is utilized to perform the simulations in an axisymmetric ... -
Numerical Characterization of a High Flux Solar Simulator Using Forward and Inverse Methods
(The American Society of Mechanical Engineers (ASME), 2020)The numerical characterization of a 10 kWe xenon arc high flux solar simulator is thoroughly presented and performed using two approaches: a forward Monte Carlo ray tracing (MCRT) method and an inverse ray tracing method. ...