Journal of Heat Transfer: Recent submissions
Now showing items 81-100 of 3611
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Solution of Unsteady Flow Equations for Nanoscale Heat and Mass Transfer in Diverse Applications
(The American Society of Mechanical Engineers (ASME), 12/19/2022)A new innovative stable time-dependent compressible flow solution over the order of nanoseconds is provided here for wide-ranging critically important challenging applications. Specifically, a solution of the highly complex ... -
Additive Manufacturing of a High Temperature, Ni-Based Superalloy Compact Heat Exchanger: A Study on the Role of Select Key Printing Parameters
(The American Society of Mechanical Engineers (ASME), 1/4/2023 1)Compared to state-of-the-art heat exchangers, manifold-microchannel heat exchangers have shown superior heat removal density (kW/kg) at moderate pressure drops. However, manifold-microchannel heat exchangers made of Ni-based ... -
Accurate Prediction of Transport Coefficients of an Evaporating Liquid Drop
(The American Society of Mechanical Engineers (ASME), 1/4/2023 1)Numerical simulations were carried out to study the evaporation of a drop that is released into a parallel stream of fluid at a higher temperature. A coupled level-set and volume-of-fluid (CLSVOF) interface capturing method ... -
Mixing in a Misaligned Serpentine Micromixer With Flow Splitting and Recombination
(The American Society of Mechanical Engineers (ASME), 12/9/2022 )Serpentine micromixers are simple in design, have a high mixing performance, and thus are preferable among passive micromixers. Conventional geometries such as square-wave, circular, and zigzag have widely been investigated ... -
Thermal Performance Optimization of the Three-Dimensional Integrated Circuits Employing the Integrated Chip-Size Double-Layer or Multi-Layer Microchannels
(The American Society of Mechanical Engineers (ASME), 12/9/2022 )The chip-size integrated double-layer microchannels (DLMCs) and multilayer microchannels (MLMCs) are investigated to optimize the thermal performance of three-dimensional integrated circuits (3D ICs). The chip-size integrated ... -
Multi-Objective Optimization of Convective Heat Transfer for a Composite Internal and Film Cooling Structure
(The American Society of Mechanical Engineers (ASME), 12/9/2022 )This paper conducted a multi-objective optimization work for a composite internal and film cooling structure. The pitch-to-height ratio of the ribs, the inclination angle of the ribs, and the inclination angle of the film ... -
Dielectrophoretically-Assisted Electrohydrodynamic-Driven Liquid Film Flow Boiling in the Presence and Absence of Gravity
(The American Society of Mechanical Engineers (ASME), 12/9/2022 )The ongoing development of modern electronic systems leads to smaller, more powerful devices that are expected to operate in complex environments. Due to this, advanced thermal management technologies are required to meet ... -
Steady Two-Dimensional Conduction: Simple and Double Layer Potentials, Corner Singularities, and Induced Heat Flux
(The American Society of Mechanical Engineers (ASME), 12/9/2022 )Two-dimensional steady-state heat conduction is possible outside closed boundaries on which two isothermal segments at different temperatures are separated by two adiabatic segments. Remarkably, previous research showed ... -
Design Under Uncertainties of the Thermal Ablation Treatment of Skin Cancer
(The American Society of Mechanical Engineers (ASME), 12/12/2022)This computational work deals with the optimal design of the thermal ablation treatment of skin cancer, by considering uncertainties in the model parameters. The tumor and other tissues were heated by a laser. Nanoparticles ... -
Opportunities and Challenges in Passive Thermal-Fluid and Energy Systems
(The American Society of Mechanical Engineers (ASME), 12/9/2022 )This article focuses on passive systems that are used in energy and thermal-fluid applications. These passive systems do not have moving parts and are reliable and cost-effective. Fluid motion in these passive devices could ... -
Peculiarities of Convective Heat and Mass Transfer in Magnetic Nanofluids
(The American Society of Mechanical Engineers (ASME), 12/9/2022 )Heat transfer enhancement due to thermomagnetic convection arising in nonisothermal electrically nonconducting ferrofluids placed in an external magnetic field is reviewed with an emphasis on realistic applications. It is ... -
Memorial Tributes to Professor Ivan Catton
(The American Society of Mechanical Engineers (ASME), 12/12/2022)The following is a tribute by Dr. Vijay K. Dhir.Professor Ivan Catton was born in British Columbia, Canada. At a young age, he migrated with his family to the Los Angeles area. He was a Bruin through-and-through: twice an ... -
Stagnation Point Heat Transfer to an Axisymmetric Impinging Jet at Transition to Turbulence
(The American Society of Mechanical Engineers (ASME), 11/22/2022)A round air jet issuing from a long straight pipe and impinging perpendicularly onto a heated flat plate was investigated experimentally. The Reynolds number (Re) covered the fully laminar, transitional, and fully turbulent ... -
New Temperature and Heat Loss Charts for One-Dimensional, Transient Heat Conduction
(The American Society of Mechanical Engineers (ASME), 11/17/2022)New temperature and heat loss charts have been created for one-dimensional, transient conduction. In the new charts, time is scaled by a weighted sum of the lumped capacitance time scale tLC and the diffusion time scale ... -
Modeling of Phase Change in Nanoconfinement Using Moment Methods
(The American Society of Mechanical Engineers (ASME), 11/17/2022)Accurate prediction of liquid–vapor phase change phenomena is critical in the design of thin vapor chambers and microheat pipes for the thermal management of miniaturized electronic systems. In view of this, we have ... -
Local Heat Transfer Measurements for an Impinging Synthetic Jet
(The American Society of Mechanical Engineers (ASME), 11/10/2022)Research results demonstrate the heat transfer effectiveness of an impinging synthetic jet toward cooling a plane normal to it. The utility of the synthetic jet lies in that the supply of coolant comes from the device ... -
Unified Integral Transforms and Non-Classical Eigenvalue Problems in Heat and Mass Transfer
(The American Society of Mechanical Engineers (ASME), 11/17/2022)The generalized integral transform technique (GITT) is reviewed as a computational–analytical methodology in linear and nonlinear convection–diffusion problems, based on eigenfunction expansions extracted from characteristic ... -
A Comparative Study on a Shrouded Fin Array With and Without Its Finite Dimension in the Flow Geometry
(The American Society of Mechanical Engineers (ASME), 2023)In numerical heat transfer analysis, despite the involvement of the finite dimension in the geometries of heat-exchanging devices, these dimensions are frequently assumed to be adequately thin and hence neglected for the ... -
Inverse Estimation of Effective Thermal Conductivity of Multilayer Materials Considering Thermal Contact Resistance
(The American Society of Mechanical Engineers (ASME), 2023)Multilayer materials have been widely used in engineering applications, attributed to excellent thermo-mechanical performances. However, the thermal or mechanical properties of multilayer materials remain elusive, owing ... -
Artificial Neural Network Modeling for Predicting the Transient Thermal Distribution in a Stretching/Shrinking Longitudinal Fin
(The American Society of Mechanical Engineers (ASME), 2023)This study emphasizes the aspects of heat transfer and transient thermal distribution through a rectangular fin profile when a stretching or shrinking mechanism is mounted on the surface of the fin. Furthermore, the effects ...