Journal of Heat Transfer: Recent submissions
Now showing items 521-540 of 3611
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Modeling of Scrap Dissolution in Molten Iron for the Case of Heat Transfer-Controlled Process by Different Approaches and Comparison of Their Accuracies
(The American Society of Mechanical Engineers (ASME), 2020)Dissolution of steel scrap in molten iron is studied by using analytical as well as numerical approaches for the case of a heat transfer-controlled process. The approaches used are Green's function approach, quasi-static ... -
Heat Transfer Enhancement for Wake Zone Using Slit Pillar in Microchannel Heat Sinks
(The American Society of Mechanical Engineers (ASME), 2020)Pillar microchannel heat sinks have been widely used for chip cooling, while their overall heat transfer performance is restricted by the stagnation flow in pillar wake zone. In this work, a simple but effective method ... -
Erratum: “Reflection of Generalized Magneto-Thermoelastic Waves With Two Temperatures Under Influence of Thermal Shock and Initial Stress” [Abo-Dahab, S. M., 2018, ASME J. Heat Transfer, 140(10), p. 102005; DOI: 10.1115/1.4040258]
(The American Society of Mechanical Engineers (ASME), 2020)In this erratum, some misprints in the main published paper [1] have been corrected as follows:The equations of motion (13) and (14) in the main published paper [1] take the form (4)∂2u∂t2=(λ+2μ+μe H02)ρ C02 ∂2u∂ x2+( λ+ ... -
Nonhomogeneous Model for the Mixed Convection and Entropy Generation of a Nanofluid in a Lid-Driven Inclined Enclosure With Discrete Heat Source
(The American Society of Mechanical Engineers (ASME), 2020)A numerical study on the mixed convection of Al2O3–water nanofluid in a lid-driven inclined square enclosure partially heated from below is performed based on Buongiorno's two phase model. The velocity of the nanoparticles ... -
Design of Full-Scale Endwall Film Cooling of a Turbine Vane
(The American Society of Mechanical Engineers (ASME), 2020)Endwall film cooling is a significant cooling method to protect the endwall region and the junction region of endwall and a turbine vane, where usually a relatively high temperature load exists. This work aims to find the ... -
Simulation of Energy Dissipation and Heat Transfers of a Braking System Using the Discrete Element Method: Role of Roughness and Granular Plateaus
(The American Society of Mechanical Engineers (ASME), 2020)The objective of this study focuses on the energy dissipation by friction on the interface of a braking system and the effects of roughness and granular plateaus on heat propagation. Faced with the difficulty of defining ... -
Natural Convection From a Vertical Plate Embedded in a Non-Darcy Bidisperse Porous Medium
(The American Society of Mechanical Engineers (ASME), 2020)This paper studies the steady, free convection boundary layer flow about a vertical, isothermal plate embedded in a non-Darcy bidisperse porous medium (BDPM). An appropriate mathematical model is proposed. The boundary ... -
Thermohydrodynamic Performance Evaluation of Recharging, Interrupted and Simple Microchannels: A Comparative Study
(The American Society of Mechanical Engineers (ASME), 2020)In this study, a three-dimensional numerical investigation on the thermohydrodynamic performance of a recently proposed recharging microchannel (RMC) is carried out. In this design, a straight microchannel is split into ... -
Significance of Prandtl Number on the Heat Transport and Flow Structure in Rotating Rayleigh–Bénard Convection
(The American Society of Mechanical Engineers (ASME), 2020)A direct numerical simulation of rotating Rayleigh–Bénard convection (RBC) for different fluids (Pr=0.015,0.7,1,7,20, and 100) in a cylindrical cell of aspect ratio Γ=0.5 is carried out in this work. The effect of rotation ... -
Heat and Mass Transfer in an Unsteady Magnetohydrodynamics Al2O3–Water Nanofluid Squeezed Between Two Parallel Radiating Plates Embedded in Porous Media With Chemical Reaction
(The American Society of Mechanical Engineers (ASME), 2020)In this paper, the influence of chemical reaction and heat source/sink on an unsteady magnetohydrodynamics (MHD) nanofluid flow that squeezed between two radiating parallel plates embedded in porous media is investigated ... -
The Validity of Approximate Boundary Conditions for Natural Convection With Thermal Radiation in Open Cavities
(The American Society of Mechanical Engineers (ASME), 2020)The use of approximate boundary conditions at the opening of the cavities leads to restriction of the computational domain and, hence, the reduction in computational effort. However, the accuracy of the restricted domain ... -
A Method to Solve the Heat Transfer Problem in a Circular Duct With an Internal Longitudinal Fin
(The American Society of Mechanical Engineers (ASME), 2020)The heat transfer problem in a circular duct with an internal longitudinal fin is investigated under constant wall temperature. Different fin heights are considered. The problem is solved in two stages. In the first stage, ... -
A Comparison of Simplified One-Dimensional and Two-Dimensional Analytical Models for Predicting Metallic Recuperator Performance
(The American Society of Mechanical Engineers (ASME), 2020)The performance models for high-temperature metallic recuperators considering one and two-dimensional heat transfer are presented. In one-dimensional model, an explicit expression to represent the effect of both the ... -
Thermal Exchange of Glass Micro-Fibers Measured by the 3ω Technique
(The American Society of Mechanical Engineers (ASME), 2020)In this work, we propose an experimental setup to measure the thermal conductivity and specific heat of a single suspended glass fiber, as well as the thermal contact resistance between two glass fibers. By using optical ... -
Numerical Investigation of Transitional Characteristics for Natural-Convection Flow in Open-Ended Inclined Channel Heated From Below
(The American Society of Mechanical Engineers (ASME), 2020)This report presents an investigation of the characteristics for transitional natural-convection flow in an open-ended inclined channel heated from below in the air under uniform heat flux intensity and non-Boussinesq ... -
Comparative Assessment of Liquid Sodium and Gallium as Emergency Coolants in Nuclear Energy Applications
(The American Society of Mechanical Engineers (ASME), 2020)The influence of the thermophysical variable properties on the buoyancy-driven flows of liquid sodium and gallium established in a cylindrical cavity is numerically investigated, for the entire range of Rayleigh number ... -
Sensitivity of Thermal Predictions to Uncertain Surface Tension Data in Laser Additive Manufacturing
(The American Society of Mechanical Engineers (ASME), 2020)To understand the process-microstructure relationships in additive manufacturing (AM), it is necessary to predict the solidification characteristics in the melt pool. This study investigates the influence of Marangoni ... -
Time Evolution of the Droplet Size Distribution in Dropwise Condensation
(The American Society of Mechanical Engineers (ASME), 2020)The droplet growth processes during dropwise condensation are simulated with the help of computer. We focus on instantaneous and time-averaged characteristics of droplet size distributions. Based on the simulation results, ... -
Array Jet Impingement on High Porosity Thin Metal Foams: Effect of Foam Height, Pore-Density, and Spent Air Crossflow Scheme on Flow Distribution and Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2020)Experimental investigation was carried out to study heat transfer and fluid flow in high porosity (93%) thin metal foams (MFs) subjected to array jet impingement, under maximum and intermediate crossflow exit schemes. ... -
The UGKS Simulation of Microchannel Gas Flow and Heat Transfer Confined Between Isothermal and Nonisothermal Parallel Plates
(The American Society of Mechanical Engineers (ASME), 2020)The unified gas kinetic scheme (UGKS) is introduced to simulate the near transition regime gas flow and heat transfer in microchannel confined between isothermal and nonisothermal parallel plates. The argon gas is used and ...