Journal of Heat Transfer: Recent submissions
Now showing items 1101-1120 of 3611
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Synthesis and Characterization of Nanofluids Useful in Concentrated Solar Power Plants Produced by New Mixing Methodologies for Large-Scale Production
(The American Society of Mechanical Engineers (ASME), 2018)In this study, different nanofluids (NFs) were developed by mixing a molten salt mixture (60% NaNO3–40% KNO3) with 1.0 wt % of silica–alumina nanoparticles using different methods. These NFs can be used as thermal energy ... -
Experimental Investigation of Jet Impingement Cooling With Carbon Dioxide at Supercritical Pressures
(The American Society of Mechanical Engineers (ASME), 2018)Jet impingement cooling is widely used in many industrial applications due to its high heat transfer capability and is an option for advanced high power density systems. Jet impingement cooling with supercritical pressure ... -
Heat Transfer in a Rotating Cooling Channel (AR = 2:1) With Rib Turbulators and a Tip Turning Vane
(The American Society of Mechanical Engineers (ASME), 2018)Experimental investigation on rotation and turning vane effects on heat transfer was performed in a two-pass rectangular internal cooling channel. The channel has an aspect ratio of AR = 2:1 and a 180 deg tip-turn, which ... -
Phenomenon and Mechanism of Spray Cooling on Nanowire Arrayed and Hybrid Micro/Nanostructured Surfaces
(The American Society of Mechanical Engineers (ASME), 2018)Enhancing spray cooling with surface structures is a common, effective approach for high heat flux thermal management to guarantee the reliability of many high-power, high-speed electronics and to improve the efficiency ... -
Numerical Simulations of Natural Convective Heat Transfer in Vertical Concentric and Eccentric Annular Channels
(The American Society of Mechanical Engineers (ASME), 2018)Natural convective heat transfer in a concentric and a highly eccentric, vertical, open ended, annular channel has been investigated numerically. The inner to outer diameter ratio was 0.61, and the height to hydraulic ... -
Semi-Analytical Solution of the Heat Transfer Including Viscous Dissipation in the Steady Flow of a Sisko Fluid in Cylindrical Tubes
(The American Society of Mechanical Engineers (ASME), 2018)Hydrodynamically and thermally fully developed flow of a Sisko fluid through a cylindrical tube has been investigated considering the effect of viscous dissipation. The effect of the convective term in the energy equation ... -
On the Steady-State Temperature Rise During Laser Heating of Multilayer Thin Films in Optical Pump–Probe Techniques
(The American Society of Mechanical Engineers (ASME), 2018)In this study, we calculate the steady-state temperature rise that results from laser heating of multilayer thin films using the heat diffusion equation. For time- and frequency-domain thermoreflectance (TDTR and FDTR) ... -
Unsteady Conjugate Natural Convective Heat Transfer and Entropy Generation in a Porous Semicircular Cavity
(The American Society of Mechanical Engineers (ASME), 2018)The problem of unsteady conjugate natural convection and entropy generation within a semicircular porous cavity bounded by solid wall of finite thickness and conductivity has been investigated numerically. The governing ... -
Effects of Hall Current and Chemical Reaction on Magnetohydrodynamics Unsteady Heat and Mass Transfer of Casson Nanofluid Flow Through a Vertical Plate
(The American Society of Mechanical Engineers (ASME), 2018)In this paper, we have reported the effects of Hall current on magnetohydrodynamics (MHD) unsteady heat and mass transfer of Casson nanofluid flow through a vertical plate in the presence of radiation and chemical reaction. ... -
Free Convection in an Open Triangular Cavity Filled With a Nanofluid Under the Effects of Brownian Diffusion, Thermophoresis and Local Heater
(The American Society of Mechanical Engineers (ASME), 2018)Natural convection of a water-based nanofluid in a partially open triangular cavity with a local heat source of constant temperature under the effect of Brownian diffusion and thermophoresis has been analyzed numerically. ... -
Orthogonal Eigenfunction Expansion Method for One-Dimensional Dual-Phase Lag Heat Conduction Problem With Time-Dependent Boundary Conditions
(The American Society of Mechanical Engineers (ASME), 2018)The separation of variables (SOV) can be used for all Fourier, single-phase lag (SPL), and dual-phase lag (DPL) heat conduction problems with time-independent source and/or boundary conditions (BCs). The Laplace transform ... -
Heat Transfer of Springs in Oblique Crossflows
(The American Society of Mechanical Engineers (ASME), 2018)An experimental program is presented of heated tension springs in an external crossflow over a range of laminar Reynolds numbers, spring stretch ratios, and angles of attack. Extensive measurements of the forced convection ... -
A Generalized Analytical Model for Joule Heating of Segmented Wires
(The American Society of Mechanical Engineers (ASME), 2018)This paper presents an analytical solution for the Joule heating problem of a segmented wire made of two materials with different properties and suspended as a bridge across two fixed ends. The paper first establishes the ... -
Direct Numerical Simulation of the Microscale Fluid Flow and Heat Transfer in the Three-Phase Contact Line Region During Evaporation
(The American Society of Mechanical Engineers (ASME), 2018)The heat and mass transfer close to the apparent three-phase contact line is of tremendous importance in many evaporation processes. Despite the extremely small dimensions of this region referred to as the microregion ... -
Condensation of a Quiescent Vapor by a Stagnation-Point Liquid Flow
(The American Society of Mechanical Engineers (ASME), 2018)We analyze the condensation of a quiescent vapor, that is in equilibrium with its liquid, induced by a stagnation point flow in the liquid. The liquid flow brings subcooled liquid from far away to the interface. The ensuing ... -
Neutron attenuation analysis of cryogenic propellants
(The American Society of Mechanical Engineers (ASME), 2018)Neutron imaging enables direct visualization of evaporation and condensation of cryogenic propellants in metal containers such as aluminum and stainless steel. CFD models of propellant behaviors inside the large tanks have ... -
Forced Convective Heat Transfer in a Channel Filled With a Functionally Graded Metal Foam Matrix
(The American Society of Mechanical Engineers (ASME), 2018)Fully developed forced convective heat transfer within a channel filled with a functionally graded metal foam matrix was investigated analytically for the case of constant wall heat flux. A series of functionally graded ... -
A General Expression for the Stagnant Thermal Conductivity of Stochastic and Periodic Structures
(The American Society of Mechanical Engineers (ASME), 2018)A general expression has been obtained to estimate thermal conductivities of both stochastic and periodic structures with high-solid thermal conductivity. An air layer partially occupied by slanted circular rods of ... -
On the Effect of Graphene Nanoplatelets on Water–Graphene Nanofluid Thermal Conductivity, Viscosity, and Heat Transfer Under Laminar External Flow Conditions
(The American Society of Mechanical Engineers (ASME), 2018)Experiments were conducted with graphene nanoplatelets (GNP) to investigate the relative benefit of the thermal conductivity increase in relationship to the potential detriment of increased viscosity. The maximum enhancement ... -
Combined Effects of Thermophoresis, Brownian Motion, and Nanofluid Variable Properties on CuO-Water Nanofluid Natural Convection in a Partially Heated Square Cavity
(The American Society of Mechanical Engineers (ASME), 2018)Numerical investigation of natural convective heat transfer and fluid flow in a differentially heated square cavity filled with a CuO-water nanofluid having variable properties is performed. Governing partial differential ...