Journal of Heat Transfer: Recent submissions
Now showing items 881-900 of 3611
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Film Cooling Effectiveness From Two Rows of Compound Angled Cylindrical Holes Using Pressure-Sensitive Paint Technique
(The American Society of Mechanical Engineers (ASME), 2019)This study investigates the effects of blowing ratio, density ratio, and spanwise pitch on the flat plate film cooling from two rows of compound angled cylindrical holes. Two arrangements of two-row compound angled cylindrical ... -
On Improving Full-Coverage Effusion Cooling Efficiency by Varying Cooling Arrangements and Wall Thickness in Double Wall Cooling Application
(The American Society of Mechanical Engineers (ASME), 2019)Overall cooling effectiveness was determined for a full-coverage effusion cooled surface which simulated a portion of a double wall cooling gas turbine blade. The overall cooling effectiveness was measured with high ... -
Thermal and Mechanical Behavior in Laser Trepan Drilling of Yttria-Stabilized Zirconia
(The American Society of Mechanical Engineers (ASME), 2019)Cracking control is very important for laser drilling of yttria-stabilized zirconia (YSZ). In this paper, a thermomechanical model is presented to investigate what will be happened in the trepan drilling of YSZ by a ... -
Impact of Pulse Length on the Accuracy of Defect Depth Measurements in Pulse Thermography
(The American Society of Mechanical Engineers (ASME), 2019)Pulse thermography (PT) is a nondestructive testing method in which an energy pulse is applied to a surface while the surface temperature evolution is measured to detect sub surface defects and estimate their depth. This ... -
Analytical Solutions to Nonuniform Surface Heat Transfer With Volumetric Sources in Magnetohydrodynamic Duct Flow
(The American Society of Mechanical Engineers (ASME), 2019)A detailed understanding of the flow of a liquid metal in a rectangular duct subject to a strong transverse magnetic field is vital in a number of engineering applications, notably for proposed blanket technologies for ... -
Effect of Power-Law Fluid Behavior on Nusselt Number of a Circular Disk in the Forced Convection Regime
(The American Society of Mechanical Engineers (ASME), 2019)Forced convection heat transfer is investigated from a thin disk in power-law fluids over wide range of conditions such as: Reynolds number, 1 ≤ Re ≤ 100, Prandtl number, 1 ≤ Pr ≤ 100, power-law index, 0.4 ≤ n ≤ 1.8, and ... -
Direct Contact Condensation Jet in Cross-Flow Using Computational Fluid Dynamics
(The American Society of Mechanical Engineers (ASME), 2019)The computational fluid dynamics is an important methodology to study the characteristics of flows in nature and in a number of engineering applications. Modeling nonisothermal flows may be useful to predict the main flow ... -
Effects of Thermophysical Variable Properties on Liquid-Sodium Convective Flows in a Square Enclosure
(The American Society of Mechanical Engineers (ASME), 2019)The influence of the variable properties on the buoyancy-driven flows of liquid sodium established in a square enclosure including two inner heated plates is numerically investigated. Two-dimensional turbulent simulations ... -
Effect of Surface Curvature on Contact Resistance Between Cylinders
(The American Society of Mechanical Engineers (ASME), 2019)Due to the microscopic roughness of contacting materials, an additional thermal resistance arises from the constriction and spreading of heat near contact spots. Predictive models for contact resistance typically consider ... -
Laminar Forced Convection in Transversely Corrugated Microtubes
(The American Society of Mechanical Engineers (ASME), 2019)Forced convection heat transfer in fully developed laminar flow in transversely corrugated tubes is investigated for nonuniform but constant wall heat flux as well as for constant wall temperature. Epitrochoid conformal ... -
A Closed Form Solution of Dual-Phase Lag Heat Conduction Problem With Time Periodic Boundary Conditions
(The American Society of Mechanical Engineers (ASME), 2019)The Laplace transform (LT) is a widely used methodology for analytical solutions of dual phase lag (DPL) heat conduction problems with consistent DPL boundary conditions (BCs). However, the inversion of LT requires a series ... -
Control of Net Radiative Heat Transfer With a Variable-Emissivity Accordion Tessellation
(The American Society of Mechanical Engineers (ASME), 2019)Origami tessellations have been proposed as a mechanism for control of radiative heat transfer through the use of the cavity effect. This work explores the impact of a changing projected surface area and varying apparent ... -
An Iterative Solution Approach to Coupled Heat and Mass Transfer in a Steadily Fed Evaporating Water Droplet
(The American Society of Mechanical Engineers (ASME), 2019)Inspired by the thermoregulation of mammals via perspiration, cooling strategies utilizing continuously fed evaporating droplets have long been investigated in the field, yet a comprehensive modeling capturing the detailed ... -
Fuzzy Adaptive Regularization Method for Inverse Steady-State Heat Transfer Problem
(The American Society of Mechanical Engineers (ASME), 2019)For the steady-state heat transfer process, a fuzzy adaptive regularization method (FARM) is proposed to estimate the distributed thermal boundary condition in heat transfer system. First, the relationship model between ... -
Improvement of Correlative Approaches for Mixed Convective Flow Through a Horizontal Vent
(The American Society of Mechanical Engineers (ASME), 2019)This study deals with the mixed convection flow through a shallow horizontal vent linking two compartments (one over the other). Depending on the temperature difference of gas as well as the ventilation flow rate between ... -
Inward Solidification Heat Transfer of Nano-Enhanced Phase Change Materials in a Spherical Capsule: An Experimental Study
(The American Society of Mechanical Engineers (ASME), 2018)The classical problem of inward solidification heat transfer inside a spherical capsule, with an application to thermal energy storage (TES), was revisited in the presence of nano-enhanced phase change materials (NePCM). ... -
Improved Spectral Absorption Coefficient Grouping Strategies in Radiation Heat Transfer Calculations for H2O–CO2-Soot Mixtures
(The American Society of Mechanical Engineers (ASME), 2018)In the present work, strategies for the grouping of the spectral absorption coefficients used in multiscale (MS) multigroup (MG) full-spectrum k-distribution models were improved by considering the effects of variations ... -
Numerical Study of Heat Transfer Enhancement of Nano Liquid-Metal Fluid Forced Convection in Circular Tube
(The American Society of Mechanical Engineers (ASME), 2018)Investigation of nano liquid-metal fluid (consists of liquid metal Ga and nanoparticles copper) as heat transfer medium in circular tube is performed for the first time. The numerical simulations of heat transfer enhancement ... -
Near-Field Radiative Heat Transfer Between Graphene/Silicon Carbide Multilayers
(The American Society of Mechanical Engineers (ASME), 2018)Hyperbolic metamaterial (HMM) alternately stacked by graphene and silicon carbide (SiC) is proposed to theoretically study near-field radiative heat transfer. Heat transfer coefficients (HTCs) are calculated using the ... -
Experimental Study on Heat Transfer Performances of Flat Tube Bank Fin Heat Exchanger Using Four Different Fin Patterns
(The American Society of Mechanical Engineers (ASME), 2018)Air-side heat transfer and flow friction characteristics of four different fin patterns suitable for flat tube bank fin heat exchangers are investigated experimentally. The fin patterns are the fin with six dimples, the ...