Journal of Heat Transfer: Recent submissions
Now showing items 21-40 of 3611
-
Numerical Study of Eccentric Jet Impingement Cooling on a Heated Cylindrical Surface
(The American Society of Mechanical Engineers (ASME), 2024)This article presents a comprehensive numerical analysis of the effects of cooling a cylinder using an eccentric slot jet impingement cooling (SJIC). The study focuses on examining the thermal and fluid behavior when the ... -
Evaluation by Liquid Crystal Thermography of Transient Surface Temperature Distribution in Radiant Floor Cooling Applications and Assessment of Analytical and Numerical Models
(The American Society of Mechanical Engineers (ASME), 2024)The purpose of our study is to evaluate the surface temperature distribution on a radiant floor, particularly focusing on space cooling operations, to assess the presence of nonuniformities. In fact, knowing the temperature ... -
Three-Dimensional Simulations of Nucleate Boiling With Sharp Interface Volume of Fluid and Localized Adaptive Mesh Refinement in ansys-fluent
(The American Society of Mechanical Engineers (ASME), 2024)The present work demonstrates the use of customized ansys-fluent in performing 3D numerical simulations of nucleate boiling with a sharp interface and adaptive mesh refinement. The developed simulation approach is a reliable ... -
Temperature Distribution in a Nonprismatic Thermoelectric Leg and the Energy Conversion Efficiency
(The American Society of Mechanical Engineers (ASME), 2024)It has been proposed that asymmetric thermoelectric (TE) legs may enhance the TE energy conversion efficiency. This work presents an analytical model for the temperature field in nonprismatic TE legs and the energy conversion ... -
In-Situ Measurement of Thermal Barrier Coating Properties Via Induction Phase Radiometry: Methodology Development
(The American Society of Mechanical Engineers (ASME), 2024)This research introduces a new method for accurately measuring the thermal resistance of thermal barrier coatings (TBCs), as typically used in gas turbine engines. The proposed method involves periodic internal heat ... -
Optimization of Y-Shaped Micro-Mixers With a Mixing Chamber for Increased Mixing Efficiency and Decreased Pressure Drop
(The American Society of Mechanical Engineers (ASME), 2024)In this study, Y-shaped micromixers with mixing chamber design optimized as rotation and chaotic advection in the fluid domain increase with the chamber. Motivated by the advantages of Y-shaped mixers, a parametric study ... -
Transient Process Analysis of Oscillating Motion in Oscillating Heat Pipes
(The American Society of Mechanical Engineers (ASME), 2024)During the startup phase, oscillating heat pipes (OHPs) exhibit a transient process in which the working fluid moves erratically until a steady-state oscillatory flow is attained. Understanding the transient process is ... -
Modeling of Average Nusselt Number by Machine Learning and Interpolation Techniques
(The American Society of Mechanical Engineers (ASME), 2024)In this study, an important heat transfer, fluid flow parameter, and average Nusselt number Nu¯ are statistically modeled by using the data obtained from a numerical process. The two-dimensional, time-dependent dimensionless ... -
Experimental and Computational Evidence of Damped Axial Conduction With Reciprocating Flow
(The American Society of Mechanical Engineers (ASME), 2024)Axial conduction is a crucial performance deteriorating factor in miniaturized heat transfer devices, primarily due to the low fluid flow rates, high solid cross-sectional to free-flow area ratio, and use of high thermal ... -
A Novel Correlation for Considering the Effect of Neighboring Droplets on the Evaporation Rate of Solvent Droplets Used in Carbon Capture Applications
(The American Society of Mechanical Engineers (ASME), 2024)The spraying of chemicals such as mono-ethanolamine (MEA) and aqueous ammonia is widely used in spray columns for CO2 removal from the combustion flue gasses. When droplets in the spray interact with flue gas, due to ... -
Theoretical Study on Falling Film Fin-Tube Dehumidifier Integrated With an Evaporative Cooler
(The American Society of Mechanical Engineers (ASME), 2024)The current work presents the theoretical analysis of a falling film fin-tube dehumidifier integrated with an evaporative cooler using CaCl2 as a liquid desiccant. In a fin-tube dehumidifier, the fins are provided outside ... -
On the Aero-Thermal Performance of Rim Film Cooling in the Squealer Tip of a Linear Turbine Cascade
(The American Society of Mechanical Engineers (ASME), 2024)The present study proposes a novel rim film cooling design, motivated by the fact that the suction-side rim and the cavity floor near the leading edge of a conventional squealer tip with a camber-line film hole array are ... -
Boiling Heat Transfer Performance of Pure Water on Binary Oxide-Based Nanoparticles Coatings
(The American Society of Mechanical Engineers (ASME), 2023)Pool boiling heat transfer performance has been evaluated on a binary oxide based nanoparticles coated surface. Electrophoretic deposition techniques were used for TiO2 and Al2O3 nanoparticles coatings on polished copper ... -
Experimental Study on Thermal Management of Nano-Enhanced Phase Change Material Integrated Battery Pack
(The American Society of Mechanical Engineers (ASME), 2023)In recent years, lithium-ion batteries (LIBs) have gained attention and popularity due to their extended cycle life and high energy density. A hexagon-shaped 18,650 lithium-ion cylindrical cell battery pack was designed, ... -
Steady and Unsteady Complex Heat Transfer in Optically Thick Medium During Film Boiling
(The American Society of Mechanical Engineers (ASME), 2024)The paper presents the results of a study of radiative-convective heat transfer at film boiling of a liquid on a vertical heated plate. Both a steady-state problem of heat transfer and a transient problem were considered. ... -
Cryogenic Air Supply Feasibility for a Confined Space: Underground Refuge Alternative Case Study
(The American Society of Mechanical Engineers (ASME), 2023)A breathable air source is required for a confined space such as an underground refuge alternative (RA) when it is occupied. To minimize the risk of suffocation, federal regulations require that mechanisms be provided and ... -
A Whole-Core Transient Thermal Hydraulic Model for Fluoride Salt-Cooled Reactors
(The American Society of Mechanical Engineers (ASME), 2023)A thermal hydraulic model is developed for a solid pin-fueled fluoride-salt-cooled small modular advanced high temperature reactor (SmAHTR). This preconceptual SmAHTR was developed by the Oak Ridge National Laboratory ... -
Analysis of Drying Front Propagation and Coupled Heat and Mass Transfer During Evaporation From Additively Manufactured Porous Structures Under a Solar Flux
(The American Society of Mechanical Engineers (ASME), 2023)Drying front propagation and coupled heat and mass transfer analysis from porous media is critical for soil–water dynamics, electronics cooling, and evaporative drying. In this study, de-ionized water was evaporated from ... -
Thermal Resistance of Heated Superhydrophobic Channels With Thermocapillary Stress
(The American Society of Mechanical Engineers (ASME), 2023)A pressure-driven channel flow between a longitudinally ridged superhydrophobic surface (SHS) and solid wall is studied, where a constant heat flux enters the channel from either the SHS or solid wall. First, a model is ... -
Maximization of the Heat Transfer Irreversibility
(The American Society of Mechanical Engineers (ASME), 2023)The function of a heat exchanger is to transfer heat. In this paper, a second law-based hypothesis is advanced that in heat exchangers, the entropy generated as a result of heat transfer alone, termed productive entropy, ...