Journal of Heat Transfer: Recent submissions
Now showing items 261-280 of 3611
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Local Thermal Nonequilibrium (LTNE) Modeling of a Partially Porous Channel With Spatial Variation in Biot Number
(The American Society of Mechanical Engineers (ASME), 2022)The local thermal nonequilibrium (LTNE) model has been used widely for analyzing heat transfer during internal flow through porous media, including when a channel is only partially filled with a porous medium. In such ... -
Role of Suction/Injection on Free Convective Flow in a Vertical Channel in the Presence of Point/Line Heat Source/Sink
(The American Society of Mechanical Engineers (ASME), 2022)This research work investigates the effect of point/line heat source/sink on free convection flow between two vertical channels with suction/injection. The Heaviside step function is used to model the constant heat ... -
Computational Fluid Dynamics-Based Analysis of Entropy Generation on Laminar Natural Convection in Enclosures With Partitioned Walls and for Different Heating Positions
(The American Society of Mechanical Engineers (ASME), 2022)A numerical investigation is performed to analyze air's steady natural convection phenomena in an enclosure with partial active sidewalls. A partition is attached to the hot wall for different active locations to study the ... -
Projection-Based Model Reduction for Coupled Conduction—Enclosure Radiation Systems
(The American Society of Mechanical Engineers (ASME), 2022)A projection-based reduced order model (pROM) methodology has been developed for transient heat transfer problems involving coupled conduction and enclosure radiation. The approach was demonstrated on two test problems of ... -
Computational Fluid Dynamics Study on Heat Transfer Augmentation in Tube With Various V-Cut Twisted Tape
(The American Society of Mechanical Engineers (ASME), 2022)A comparative study on the enhancement mechanism by various twisted tapes (TTs) in association with the local flow pattern is investigated in detail via computational fluid dynamics (CFD). The effect of gap between TT and ... -
Optimization of the Thermal Performance of Three-Dimensional Integrated Circuits Utilizing Rectangular-Shaped and Disk-Shaped Heat Pipes
(The American Society of Mechanical Engineers (ASME), 2022)Rectangular-shaped and disk-shaped heat pipes, as innovative heat sinks, are investigated to optimize the thermal performance of three-dimensional integrated circuits (3D ICs) in this work. Finite volume numerical analysis ... -
Experimental and Theoretical Investigation of Nucleation Site Density and Heat Transfer During Dropwise Condensation on Thin Hydrophobic Coatings
(The American Society of Mechanical Engineers (ASME), 2022)Dropwise condensation (DWC) has the potential to enhance heat transfer compared to filmwise condensation (FWC). The heat transfer rates achieved by DWC depend on the drop size distribution, which is influenced by nucleation ... -
Study the Effect of Acoustical Fuel Enhancement on the Flame Characteristics
(The American Society of Mechanical Engineers (ASME), 2022)This work presents a 2D numerical simulation of the nonpremixed combustion of natural gas in an axisymmetric cylindrical chamber, focusing on the effect of adding acoustical excitation to inlet fuel velocity on temperature, ... -
On the Vaporization Rate and Flame Shape of Nonspherical Droplets
(The American Society of Mechanical Engineers (ASME), 2022)Motivated by the study of spray combustion, this work addresses the combustion of nonspherical droplets. The combustion of spray is usually understood through the theory of droplet combustion, and improving this latter ... -
Wind Tunnel Investigation and Numerical Analysis of Fume Behavior in the Vicinity of Rectangular Building Under Moderate Velocity Wind
(The American Society of Mechanical Engineers (ASME), 2022)The research was conducted to examine the dispersion of pollutants ejected from a chimney a around three-dimensional rectangular building. Regarding the experimental study, the wind tunnel experiment comprises data acquired ... -
Application of Superposition Principle for Solving a Nonlinear Energy Equation
(The American Society of Mechanical Engineers (ASME), 2022)A new procedure to solve a nonlinear energy equation using the superposition principle is proposed. As an example of the utilization of this procedure, forced convection in a tube with temperature-dependent fluid properties ... -
A Free-Standing, Silent, Micro/Mesoscale Combustion-Powered Thermoelectric Generator Based on Natural Convection Cooling
(The American Society of Mechanical Engineers (ASME), 2022)In recent years, the world has become increasingly interested in power generation using thermoelectric generators (TEG) because of the advantage of converting heat directly to electricity. In this work, experimental studies ... -
Numerical Simulation of Thermal Conductivity of Stainless Steel and Al-12Si Powders for Additive Manufacturing
(The American Society of Mechanical Engineers (ASME), 2022)A three-dimensional model of a partially melted powder bed with particles stochastically distributed in size and space coordinates has been developed. Numerical simulation of temperature distributions in stainless steel ... -
Evaluation of Nusselt Number for a Flow in a Parallel Plates Using Magnetohydrodynamics Second-Order Slip Model
(The American Society of Mechanical Engineers (ASME), 2022)This study is the examination of magnetohydrodinamics (MHD) flow and heat transfer between microparallel plates with constant wall heat flux using two different boundary condition coefficients, widely known in the literature, ... -
Role of Three-Dimensional Swirl in Forced Convection Heat Transfer Enhancement in Wavy-Plate-Fin Channels
(The American Society of Mechanical Engineers (ASME), 2022)The influence of wall-corrugation-induced swirl flow on enhanced forced convection in wavy-plate-fin cores has been investigated. Three-dimensional computational simulations were carried out for steady-state periodically ... -
Modeling of Supercritical CO2 Shell-and-Tube Heat Exchangers Under Extreme Conditions: Part II: Heat Exchanger Model
(The American Society of Mechanical Engineers (ASME), 2022)Heat exchangers play a critical role in supercritical CO2 Brayton cycles by providing necessary waste heat recovery. Supercritical CO2 thermal cycles potentially achieve higher energy density and thermal efficiency operating ... -
Modeling of Supercritical CO2 Shell-and-Tube Heat Exchangers Under Extreme Conditions. Part I: Correlation Development
(The American Society of Mechanical Engineers (ASME), 2022)High-temperature supercritical CO2 Brayton cycles are promising possibilities for future stationary power generation and hybrid electric propulsion applications. Heat exchangers are critical components in supercritical CO2 ... -
Analytical Solution of Heat Exchange in Typical Electrocaloric Devices
(The American Society of Mechanical Engineers (ASME), 2022)To date, most of electrocaloric devices reported can be simplified as a multilayer structure in which thermal source and sink are different materials at two ends. The thermal conduction in the multilayer structure is the ... -
Application of the B-Spline Method to Solve Nonlinear Problem of Heat Conduction With Radiation Boundary Conditions Using Kirchhoff Transformation
(The American Society of Mechanical Engineers (ASME), 2022)This paper concerns the joint application of the B-spline method and the Kirchhoff transformation to solve the nonlinear problem of thermal conduction with radiation type boundary conditions. The proposed method requires ... -
Numerical Modeling of Simultaneous Heat and Moisture Transport in Fire Protective Suits Under Flash Fire Exposure and Evaluation of Second-Degree Burn Time
(The American Society of Mechanical Engineers (ASME), 2022)An improved numerical model is developed for coupled heat and moisture transport in fire protective suits exposed to flash fire. This model is combined with Pennes' bioheat transfer model and subsequently, second-degree ...