Journal of Heat Transfer: Recent submissions
Now showing items 541-560 of 3611
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A Novel Method for Transient Heat Conduction in a Quasi-Periodic Structure With Nonlinear Defects
(The American Society of Mechanical Engineers (ASME), 2020)This paper proposes an efficient numerical method for transient heat conduction in a quasi-periodic structure with nonlinear defects. According to the physical features of transient heat conduction, a quasi-superposition ... -
Instantaneous Optical Measurement of the Temperature at the Interface Between a Wall and a Thin Liquid Film
(The American Society of Mechanical Engineers (ASME), 2020)Instantaneous temperature measurements at the interface between a solid wall and a thin, unsteady liquid film are performed using thermoreflectance, a nonintrusive optical technique with high temporal resolution. A laser ... -
Wettability Effects on Falling Film Flow and Heat Transfer Over Horizontal Tubes in Jet Flow Mode
(The American Society of Mechanical Engineers (ASME), 2020)The performance of a falling-film heat exchanger is strongly linked to the surface characteristics and the heat transfer processes that take place over the tubes. The primary aim of this numerical study is to characterize ... -
Development of Analytical Solution for a Two-Phase Stefan Problem in Artificial Ground Freezing Using Singular Perturbation Theory
(The American Society of Mechanical Engineers (ASME), 2020)Artificial ground freezing (AGF) has historically been used to stabilize underground structure. Numerical methods generally require high computational power to be applicable in practice. Therefore, it is of interest to ... -
Finite Volume Method for Fractional Maxwell Viscoelastic Fluid Over a Moving Plate With Convective Boundary Condition
(The American Society of Mechanical Engineers (ASME), 2020)A novel finite volume method about the boundary layer flow and heat transfer of fractional viscoelastic fluid over a moving plate with convective boundary condition is developed. The fractional Maxwell model and fractional ... -
Heat Transfer Enhancement in Pool Boiling of Distilled Water Using Gridded Metal Surface With Protrusions Over Microporous-Coated Surface
(The American Society of Mechanical Engineers (ASME), 2020)The nucleate pool is a useful technique of heat dissipation in a variety of thermal applications. This study investigates the effect of the gridded metal surface (GMS) with and without protrusions on the heat transfer from ... -
Separated Phase Analysis of Heat Transfer in Liquid–Liquid Taylor Flow in a Miniscale Straight Tube
(The American Society of Mechanical Engineers (ASME), 2020)Heat transfer analysis of liquid–liquid Taylor flow in previous studies almost never shows the effect of slug length on heat transfer. The homogenous or single-phase analysis is often the only method available to deal with ... -
Experimental and Numerical Study of Heat Transfer and Turbulent Flow Characteristics in Three-Short-Pass Serpentine Cooling Channels With Miniature W-Ribs
(The American Society of Mechanical Engineers (ASME), 2020)Detailed experimental and numerical studies have been conducted on the heat transfer, pressure loss, and turbulent flow structure of a three-short-pass serpentine cooling channel with miniature W-shaped ribs on the wall ... -
Computational Analysis of Rotating Effects on Heat Transfer and Pressure Loss of Turbulent Flow in Detached Pin Fin Arrays With Various Clearances
(The American Society of Mechanical Engineers (ASME), 2020)A detailed computational analysis is carried out on the heat transfer and pressure loss of a turbulent flow in detached pin fin arrays with various clearance values for the Reynolds number range of 20,000–80,000 and the ... -
Ballistic-Diffusive Heat Conduction in Thin Films by Phonon Monte Carlo Method: Gray Medium Approximation Versus Phonon Dispersion
(The American Society of Mechanical Engineers (ASME), 2020)The gray medium approximation treating all phonons with an averaged and representative mean-free-path (MFP) is an often used method in analyzing ballistic-diffusive heat conduction at nanoscale. However, whether there ... -
Laminar Forced Convection in Viscous Shear-Thinning Liquid Flows Inside Circular Pipes: Case for a Modified Power-Law Rheology
(The American Society of Mechanical Engineers (ASME), 2020)Laminar forced convection in viscous, non-Newtonian polymeric liquids that exhibit pseudoplastic or shear-thinning behavior is characterized. The fluid rheology is characterized by a new asymptotic power-law (APL) model, ... -
General Correlations for Laminar Flow Friction Loss and Heat Transfer in Plain Rectangular Plate-Fin Cores
(The American Society of Mechanical Engineers (ASME), 2020)New generalized correlations for predicting the average fanning friction factor f and average Nusselt number Nu for laminar flow in plain plate-fin compact cores of rectangular cross section are presented. These are based ... -
Flow Boiling in a Parallel Strip Fin Heat Sink With Nonuniform Heat Flux Conditions
(The American Society of Mechanical Engineers (ASME), 2020)This study investigates the thermal performance of a parallel strip fin heat sink (PSFHS) under various heat flux conditions at a flowrate of 100 ml/min, including uniform heat flux and nonuniform heat flux. The heat sink ... -
The Cooling Performance of Mixed Convection in a Ventilated Enclosure With Different Ports Configurations
(The American Society of Mechanical Engineers (ASME), 2020)Mixed convection heat transfer in a vertically oriented air-cooled square enclosure is simulated numerically using the finite volume method. The vertical left wall being heated and all others are considered insulated. The ... -
Investigation of Flow Around and in Wake of a Heated Circular Cylinder at Moderate Reynolds Numbers
(The American Society of Mechanical Engineers (ASME), 2020)The flow around a heated circular cylinder and the wake behind it were studied in wind tunnel flow using two methods of anemometry, i.e., particle image velocimetry (PIV) and constant temperature anemometry (CTA) with a ... -
Inverse Heat Transfer Study of a Power Transmission Line Tower Foundation
(The American Society of Mechanical Engineers (ASME), 2020)In some northern regions, power transmission lines are built with metal tower footings buried in the permafrost. With a high thermal conductivity, the tower footing has a significant thermal effect on the foundation and ... -
Rotational Effect on Flow Field and Thermal Characteristics of a Turboexpander for Helium Liquefaction System: A Numerical Perspective
(The American Society of Mechanical Engineers (ASME), 2020)Cryogenic turboexpander is an essential component to produce the refrigeration effect in various helium liquefaction systems. The convergent nozzle and small-scale radial inflow turbine (turboexpander) are the important ... -
Local Heat Transfer Distributions Within a Rotating Pin-Finned Brake Disk
(The American Society of Mechanical Engineers (ASME), 2020)This study presents local temperature and heat transfer coefficient distributions obtained experimentally on the internal surfaces of a rotating pin-finned brake rotor at realistic rotation speeds for braking (i.e., ... -
Experimental Comparison of Flow Boiling Heat Transfer in High Aspect Ratio Microchannels With Plain and Grooved Walls
(The American Society of Mechanical Engineers (ASME), 2020)The dry-out easily occurs on high-aspect ratio microchannel sidewalls due to the decreasing of liquid film thickness. In this paper, the triangular microgrooves possessing the characteristic of evaporating meniscus were ... -
The Effect of an Upstream Dune-Shaped Shells on Forward and Backward Injection Hole Film Cooling
(The American Society of Mechanical Engineers (ASME), 2020)This article presents the numerical results of a new film cooling design that combines the backward injection hole with Barchan-dune-shaped shells (BH-BDS).The performance of this novel design in improving the film cooling ...