Journal of Heat Transfer: Recent submissions
Now showing items 401-420 of 3611
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Numerical Simulation of Thermal Diffusivity Measurements With the Laser-Flash Method to Evaluate the Effective Property of Composite Materials
(The American Society of Mechanical Engineers (ASME), 2021)The laser-flash method (LFM) is a technique commonly used to measure thermal diffusivity of homogeneous and isotropic materials, but can also be applied to macroscopically inhomogeneous materials, such as composites. When ... -
Thermal Transport in Polymers: A Review
(The American Society of Mechanical Engineers (ASME), 2021)In this article, we review thermal transport in polymers with different morphologies from aligned fibers to bulk amorphous states. We survey early and recent efforts in engineering polymers with high thermal conductivity ... -
Relationship Between Pressure Drop and Heat Transfer of Fully Developed Flow in Smooth Horizontal Circular Tubes and Spiral-Coiled Tubes in the Laminar Flow Regime
(The American Society of Mechanical Engineers (ASME), 2021)Studies on isothermal steady-state frictional pressure drop for flow of petroleum base oils SN70, SN150, diesel, and water are carried out in spiral coils with diameter to length ratio, 0.00042, 0.00047, 0.00073, 0.00164, ... -
Local Thermal Nonequilibrium Analysis of Boundary Layer Flow of Carreau Fluid Over a Wedge in a Porous Medium
(The American Society of Mechanical Engineers (ASME), 2021)This work examines the steady two-dimensional mixed convection boundary layer flow of non-Newtonian Carreau fluid embedded in a porous medium. The impermeable wedge is at rest over which the momentum and thermal boundary ... -
A Modern Review on Jet Impingement Heat Transfer Methods
(The American Society of Mechanical Engineers (ASME), 2021)Jet impingement cooling is considered as one of the most effective heat transfer enhancement techniques. The primary mode of heat transfer enhancement is due to the flow stagnation. The effectiveness of jet impingement as ... -
Use of Cuckoo Search Algorithm for Performance Evaluation of Split Elliptic Shaped Fins for Enhanced Rate of Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2021)Proper dissipation of thermal energy has always been a need for desirable efficiency of a system. Extended surface aids in releasing the heat to the immediate surrounding by inducing an extra area. This particular work ... -
Transient Response Characteristics and Performance Assessment of a Calorimetric Surface Junction Probe Under Impulsive Thermal Loading
(The American Society of Mechanical Engineers (ASME), 2021)The measurement of surface temperatures in highly unsteady flow environments is a challenging task pertaining to the need for high-frequency sensors. This paper contains the sequential activities related to a fast response ... -
Numerical Investigation on Bubble Growth and Merger in Microchannel Flow Boiling With Self-Rewetting Fluid
(The American Society of Mechanical Engineers (ASME), 2021)There exist some problems such as flow instability and critical heat flux (CHF) caused by the local dryout phenomenon, which is an obstacle to the application of microchannel flow boiling heat sink. Utilizing self-rewetting ... -
Experimental Investigation on a Thin-Loop Heat Pipe With New Evaporator Structure
(The American Society of Mechanical Engineers (ASME), 2021)This paper presents thin-loop heat pipes (tLHPs) with evaporator thickness of 1 mm and a one-way transport length of 200 mm. Grooves and liquid cores are mounted on the evaporator case in the design of a flat evaporator. ... -
Effect of Sinusoidally Varying Flow of Yield Stress Fluid on Heat Transfer From a Cylinder
(The American Society of Mechanical Engineers (ASME), 2021)The effect of pulsating laminar flow of a Bingham plastic fluid on heat transfer from a constant temperature cylinder is studied numerically over wide ranges of conditions as Reynolds number (0.1 ≤ Re ≤ 40) and Bingham ... -
Heat Transfer Characteristics of a Train of Droplets Impinging Over a Hot Surface: From Film Evaporation to Leidenfrost Point
(The American Society of Mechanical Engineers (ASME), 2021)High-performance computing systems are needed in advanced computing services such as machine learning and artificial intelligence. Consequently, the increase in electron chip density results in high heat fluxes and requires ... -
Physics-Informed Neural Networks for Heat Transfer Problems
(The American Society of Mechanical Engineers (ASME), 2021)Physics-informed neural networks (PINNs) have gained popularity across different engineering fields due to their effectiveness in solving realistic problems with noisy data and often partially missing physics. In PINNs, ... -
Convective Cooling of Compact Electronic Devices Via Liquid Metals With Low Melting Points
(The American Society of Mechanical Engineers (ASME), 2021)The increasingly high power density of today's electronic devices requires the cooling techniques to produce highly effective heat dissipation performance with as little sacrifice as possible to the system compactness. ... -
Bioconvection of a Radiating Hybrid Nanofluid Past a Thin Needle in the Presence of Heterogeneous–Homogeneous Chemical Reaction
(The American Society of Mechanical Engineers (ASME), 2021)The photocatalytic nature of TiO2 finds applications in medicinal field to kill cancer cells, bacteria, and viruses under mild ultraviolet illumination and the antibacterial characteristic of Ag makes the composition Ag−TiO2 ... -
Evolutionary Design Method for a Conducting Solid Cooled by Combined Free Convection and Radiation
(The American Society of Mechanical Engineers (ASME), 2021)An iterative design algorithm is used to adjust the shape of a conducting solid body that is subjected to a surface heat flux and cooled simultaneously by free convection and radiation in order to reduce the overall thermal ... -
Thermal Transport in Laminar Convective Flow of Ferrofluids in the Presence of External Magnetic Field
(The American Society of Mechanical Engineers (ASME), 2021)A three-dimensional (3D) numerical investigation is carried out to examine the effect of magnetic field (MF) on laminar forced convection of ferrofluids. Laminar flow (Reynolds number (Re) ≤ 100) of ferrofluid is modeled ... -
Filmwise Condensation From Humid Air on a Vertical Superhydrophilic Surface: Explicit Roles of the Humidity Ratio Difference and the Degree of Subcooling
(The American Society of Mechanical Engineers (ASME), 2021)The process involving heat and mass transfer during filmwise condensation (FWC) in the presence of noncondensable gases (NCG) has great significance in a large variety of engineering applications. Traditionally, the ... -
Enhanced Specific Heat of Molten Salt Nano-Eutectic Via Nanostructural Change
(The American Society of Mechanical Engineers (ASME), 2021)In this study, the specific heat of molten salt nano-eutectic (Li2CO3-K2CO3 doped with SiO2 nanoparticles) was theoretically and computationally investigated. The effective specific heat of a nano-eutectic can be significantly ... -
Conjugate Thermal Optimization With Unsupervised Machine Learning
(The American Society of Mechanical Engineers (ASME), 2021)With advances in additive manufacturing of metal components, commercial production of complex turbine components is becoming feasible. Thus, designers are not constrained to the limitations of conventional manufacturing ... -
Average Wall Radiative Heat Transfer Characteristic of Isothermal Radiative Medium in Inner Straight Fin Tubes
(The American Society of Mechanical Engineers (ASME), 2021)Wall radiative heat transfer in inner straight fin tubes is very complex considering the coupling of heat conduction in fins and radiative heat transfer of medium with solid surfaces, influenced by a number of factors such ...