Journal of Heat Transfer: Recent submissions
Now showing items 661-680 of 3611
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Pressure Drop and Heat Transfer Performance of Microchannel Heat Exchanger With Circular Reentrant Cavities and Ribs
(The American Society of Mechanical Engineers (ASME), 2020)The rib arrangement has an important influence on the pressure drop and heat transfer performance of a microchannel heat exchanger (MHE) with circular reentrant cavities and ribs. In this study, four kinds of MHEs with ... -
A Novel Indirect Visualization Method for Studying the Melting Heat Transfer of Nano-Enhanced Phase Change Materials Using Thermochromic Liquid Crystal Thermography
(The American Society of Mechanical Engineers (ASME), 2020)In order to give more sights into the melting (and solidification) heat transfer processes of nano-enhanced phase change material (NePCM) with invisible phase interfaces, a novel indirect method for tracking the phase ... -
A Study of Temperature Distribution and Thermal Stresses in a Hot Rock Due to Rapid Cooling
(The American Society of Mechanical Engineers (ASME), 2020)Thermal stresses may be induced in a hot dry rock when a cold fluid is injected in the well. To study this problem, we look at the thermoelastic response of a hot rock that is suddenly cooled. The cooling is assumed to be ... -
Arrangement Effects of 30 deg Inclined Teardrop-Shaped Dimples on Film Cooling Flow Over Dimpled Cutback Surface at Airfoil Trailing Edge Investigated by 2D3C-PTV
(The American Society of Mechanical Engineers (ASME), 2020)The objective of this study is to determine the differences in flow fields between the 30 deg in-line and staggered arrangements of teardrop-shaped dimples, and to explain why the surface-averaged Nusselt number with the ... -
Effects of Two-Temperature, Rotation, Initial Stressed Magnetic Field on Rayleigh Wave in Half-Plane
(The American Society of Mechanical Engineers (ASME), 2020)In the present paper, we consider the governing equation for generalized thermoelastic media under the effect of magnetic fleld, rotation, initial stress, and two-temperature parameter for Rayleigh wave in half-space. The ... -
High-Resolution Measurements of Heat Transfer, Near-Wall Intermittency, and Reynolds-Stresses Along a Flat Plate Boundary Layer Undergoing Bypass Transition
(The American Society of Mechanical Engineers (ASME), 2020)A new experimental dataset focusing on the influence of high freestream turbulence and large pressure gradients on boundary layer transition is presented. The experiments are conducted in a new wind tunnel equipped with a ... -
Studies on Separation Efficiency and Energy Conservation Through Novel Finned Cyclone Separator
(The American Society of Mechanical Engineers (ASME), 2020)In the present study, cylindrical portion of conventional (nonfinned) cyclone separator was reshaped by fixing triangular, semicircular, and rectangular cross section helical fins in order to make it as water wall having ... -
Entropy Generation Minimization Analysis of Solar Salt, Sodium, and Lead–Bismuth Eutectic as High Temperature Heat Transfer Fluids
(The American Society of Mechanical Engineers (ASME), 2020)The amount of entropy generation in heat transfer devices impacts their operation economy and should therefore be minimized during the design phase. Entropy generation also depends on the individual thermophysical properties ... -
A Nonfield Analytical Method for Solving Energy Transport Equations
(The American Society of Mechanical Engineers (ASME), 2020)In 2000, Kulish and Lage proposed an elegant method, which allows one to obtain analytical (closed-form) solutions to various energy transport problems. The solutions thus obtained are in the form of the Volterra-type ... -
Acoustic Radiation, Cavitation Collapses, and Dryout in a Capillary Oscillating Heat Pipe
(The American Society of Mechanical Engineers (ASME), 2020)In an oscillation heat pipe (OHP), when two-phase flow oscillates to the condensation region, saturated vapor bubbles/slugs are subjected to a sudden temperature reduction or immediate subcooling. Rapid condensation ruptures ... -
A Note on the Comparative Analysis Between Rectangular and Modified Duct Heat Exchanger
(The American Society of Mechanical Engineers (ASME), 2020)The plate fin heat exchangers usually have either rectangular or triangular shaped flow passage. In comparison to triangular flow passage, rectangular flow passage gives comparatively higher heat transfer at the cost of ... -
Combined Influence of Fluid Viscoelasticity and Inertia on Forced Convection Heat Transfer From a Circular Cylinder
(The American Society of Mechanical Engineers (ASME), 2020)In this study, the combined influence of fluid viscoelasticity and inertia on the flow and heat transfer characteristics of a circular cylinder in the steady laminar flow regime have been studied numerically. The momentum ... -
Flow Regimes for Laminar Film Condensation on a Vertical Plate With an Upward Vapor Flow
(The American Society of Mechanical Engineers (ASME), 2020)Laminar film condensation on a vertical plate with an upward vapor flow is studied. An approximate integral model of the condensate film and the boundary layer of the vapor is numerically solved, taking into account both ... -
Effect of Polymer Coating on Vapor Condensation Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2020)Condensation heat transfer coefficients (HTCs) are rather low compared to thin film evaporation. Therefore, it can be a limiting factor for designing heat transfer equipment. In this work, heat transfer characteristics of ... -
Condensation and Wetting Behavior on Hybrid Superhydrophobic and Superhydrophilic Copper Surfaces
(The American Society of Mechanical Engineers (ASME), 2020)A novel hybrid superhydrophobic and superhydrophilic copper surface was fabricated using a lift-off process to integrate the benefits of dropwise and filmwise condensation together. The superhydrophilic surface was comprised ... -
In Memoriam: Professor Ephraim Maurice Sparrow
(The American Society of Mechanical Engineers (ASME), 2020)Ephraim Maurice SparrowOn Thursday Aug. 1, 2019, we were deeply saddened to hear that Professor Ephraim M. Sparrow passed away at the age of 91 years. Professor Ephraim M. Sparrow was born on May 27, 1928, and through his ... -
Discussion: “Simultaneous Effects of Nonlinear Mixed Convection and Radiative Flow Due to Riga-Plate With Double Stratification” (Hayat, T., Ullah, I., Alsaedi, A., Ahamad, B., 2018, ASME J. Heat Transfer, 140(10), p. 102008)
(The American Society of Mechanical Engineers (ASME), 2020)The present comment concerns some doubtful results included in the above paper. -
Thermal Step Response of N-Layer Composite Walls—Accurate Approximative Formulas
(The American Society of Mechanical Engineers (ASME), 2020)For many industrial applications, heat flow through composites relates directly to energy usage and thus is of highest interest. For multilayer composites, the heat flow is a result of multiple variables, such as the ... -
Benchmark Solutions of Three-Dimensional Radiative Transfer in Nongray Media Using Line-by-Line Integration
(The American Society of Mechanical Engineers (ASME), 2020)Nongray gas radiation calculations are conducted for four three-dimensional benchmarks using line-by-line (LBL) integration with the up-to-date high-resolution spectroscopic database HITEMP 2010. The radiative transfer ... -
Exergetic Relationship Between the Thermal Properties of Direct Contact Membrane Distillation
(The American Society of Mechanical Engineers (ASME), 2020)Direct contact membrane distillation (DCMD) is a process that has shown promise within the field of desalination due to its less energy intensive methods and widespread applications. DCMD is a thermally driven microfiltration ...