Journal of Heat Transfer: Recent submissions
Now showing items 1461-1480 of 3611
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Effect of Meniscus Curvature on Apparent Thermal Slip
(The American Society of Mechanical Engineers (ASME), 2016)We analytically consider the effect of meniscus curvature on heat transfer to laminar flow across structured surfaces. The surfaces considered are composed of ridges. Curvature of the menisci, which separates liquid in the ... -
Temperature Created by a Moving Heat Source That Heats and Melts the Metal Plate (Plasma Arc Cutting)
(The American Society of Mechanical Engineers (ASME), 2016)Heat transfer in a metal cut by a moving arc jet is considered using the method of superposition of heat sources and sinks. The heat sources are located at the plasma–liquid metal boundary, heat sinks—at the melting ... -
Quenching of a Heated Rod: Physical Phenomena, Heat Transfer, and Effect of Nanofluids
(The American Society of Mechanical Engineers (ASME), 2016)The physical phenomena of rewetting and quenching are of prime importance in nuclear reactor safety in the event of a loss of coolant accident (LOCA). Generally, top spray or bottom flooding concepts are used in reactors. ... -
An Experimental and Numerical Analysis of Natural Convective Heat Transfer in a Square Cavity With Five Discrete Heat Sources
(The American Society of Mechanical Engineers (ASME), 2016)This paper provides an experimental and numerical investigation of natural convection in a square cavity. The square cavity is full of air (Pr = 0.71) and contains four heat sources of height hW, positioned symmetrically ... -
Numerical Simulation of Piston Cooling With Oil Jet Impingement
(The American Society of Mechanical Engineers (ASME), 2016)Convective heat transfer of an impinging jet is numerically evaluated for piston cooling process. A circular jet of subcooled engine oil that impinges normally onto the inner surface of the piston for an engine operating ... -
Effects of Second Order Slip and Magnetic Field on Mixed Convection Stagnation Point Flow of a Maxwellian Fluid: Multiple Solutions
(The American Society of Mechanical Engineers (ASME), 2016)In this paper, we investigate the effects of secondorder slip and magnetic field on the nonlinear mixed convection stagnationpoint flow toward a vertical permeable stretching/shrinking sheet in an upper convected Maxwell ... -
Heat Transfer During Constrained Melting of Nano Enhanced Phase Change Materials in a Spherical Capsule: An Experimental Study
(The American Society of Mechanical Engineers (ASME), 2016)The classical problem of constrained melting heat transfer of a phase change material (PCM) inside a spherical capsule was revisited experimentally in the presence of nanoscale thermal conductivity fillers. The model ... -
Nonlinear Analysis of Chaotic Flow in a Three Dimensional Closed Loop Pulsating Heat Pipe
(The American Society of Mechanical Engineers (ASME), 2016)Numerical simulation has been conducted for the chaotic flow in a 3D closedloop pulsating heat pipe (PHP). Heat flux and constant temperature boundary conditions were applied for evaporator and condenser sections, respectively. ... -
Moisture Desorption Studies on Polymer Hydrated and Vacuum Extruded Bentonite Clay Mat
(The American Society of Mechanical Engineers (ASME), 2016)Moisture desorption observations from two bentonite clay mats subjected to ten environmental zones with individually different combinations of laboratorycontrolled constant temperatures (between 20 آ°C and 40 آ°C) and ... -
High Flux Thermal Management With Supercritical Fluids
(The American Society of Mechanical Engineers (ASME), 2016)A novel thermal management approach is explored, which uses supercritical carbon dioxide (sCO2) as a working fluid to manage extreme heat fluxes in electronics cooling applications. In the pseudocritical region, sCO2 has ... -
Numerical Study of Natural Convection in a Ferrofluid Filled Corrugated Cavity With Internal Heat Generation
(The American Society of Mechanical Engineers (ASME), 2016)In this paper, numerical simulations for the natural convection in a ferrofluidfilled corrugated cavity with internal heat generation under the influence of a magnetic dipole source were performed. The cavity is heated ... -
Maximum Heat Transfer and Operating Temperature of Oscillating Heat Pipe
(The American Society of Mechanical Engineers (ASME), 2016)It is reported that the operating temperature of an oscillating heat pipe (OHP) at an operating limit is not dependent on the ambient temperature but that the maximum heat transfer is dependent on this. In this study, using ... -
An Effectiveness–Number of Transfer Units Relationship for Evaporators With Non negligible Boiling Point Elevation Increases
(The American Society of Mechanical Engineers (ASME), 2016)An effectiveness number of transfer units (خµâ€“NTU) model is developed for use in evaporators where the evaporating stream: (1) comprises a volatile solvent and nonvolatile solute(s) and (2) undergoes a significant, but ... -
Paired Quasi Linearization Analysis of Heat Transfer in Unsteady Mixed Convection Nanofluid Containing Both Nanoparticles and Gyrotactic Microorganisms Due to Impulsive Motion
(The American Society of Mechanical Engineers (ASME), 2016)This paper presents the motion of unsteady gravityinduced nanofluid flow containing gyrotactic microorganisms along downward vertical convectively heated surface subject to passively controlled nanofluid. Considering the ... -
Entrance Region Heat Transfer in a Channel With a Ribbed Wall
(The American Society of Mechanical Engineers (ASME), 2016)Direct numerical simulation was performed for the heat transfer of airflow in the entrance region of a channel with repeated rib protrusions. The ribpitch to ribheight ratio (Pi/H) was increased from 2.0 to 16.0 by four ... -
Heat Transfer Across Nanoparticle–Liquid Interfaces
(The American Society of Mechanical Engineers (ASME), 2016)A better understanding of submicronscale heat transfer is rapidly gaining interest due to the complex phenomena involved in nanometer scales. We discuss the role of interfacial resistance, in particular that of curvature ... -
Thermal Conductivity of Complex Hydrocarbon Systems at Pressures Up To 1000 MPa
(The American Society of Mechanical Engineers (ASME), 2016)The thermal conductivity of five samples of crude oil and one sample of gas condensate was measured by the transient hotwire technique. The measurements were made along isotherms (245, 250, 273, 295, 320, 336, and 373 K) ... -
Comparison Between Casson Fluid Flow in the Presence of Heat and Mass Transfer From a Vertical Cone and Flat Plate
(The American Society of Mechanical Engineers (ASME), 2016)The present study explores the influence of viscous dissipation, Joule heating, and double dispersion on unsteady, free convective magnetohydrodynamics (MHD) flow of an incompressible Casson fluid over a vertical cone and ... -
Quantitative Three Dimensional Imaging of Heterogeneous Materials by Thermal Tomography
(The American Society of Mechanical Engineers (ASME), 2016)Infrared thermal imaging based on active thermal excitations has been widely used for nondestructive evaluation (NDE) of materials. While the experimental systems have remained essentially the same during the last few ... -
Analysis of Nonisothermal Rarefied Gas Flow in Diverging Microchannels for Low Pressure Microresistojets
(The American Society of Mechanical Engineers (ASME), 2016)Heat transfer and fluid flow through different microchannel geometries in the transitional regime (rarefied flow) are analyzed by means of direct simulation Monte Carlo (DSMC) simulations. Four types of threedimensional ...