Journal of Heat Transfer: Recent submissions
Now showing items 1661-1680 of 3611
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Boiling Under Hele Shaw Flow Conditions: The Occurrence of Viscous Fingering
(The American Society of Mechanical Engineers (ASME), 2016)Boiling and bubble dynamics were experimentally investigated in a HeleShaw flow cell using pure water at atmospheric pressure as the working fluid. The resulting vapor bubble shapes were recorded by means of a highspeed ... -
Cooling Capacity Figure of Merit for Phase Change Materials
(The American Society of Mechanical Engineers (ASME), 2016)In this paper, a figure of merit for the cooling capacity (FOMq) of phase change materials (PCMs) is defined from the analytical solution of the twophase Neumann–Stefan problem of melting of a semiinfinite material with ... -
Frictional Pressure Drop Correlations for Single Phase Flow, Condensation, and Evaporation in Microfin Tubes
(The American Society of Mechanical Engineers (ASME), 2016)Experimental singlephase, condensation, and evaporation (flow boiling) pressure drop data from the literature and our previous studies were collected to evaluate previous frictional pressure drop correlations for horizontal ... -
Subcooled Pool Film Boiling Heat Transfer From Spheres With Superhydrophobic Surfaces: An Experimental Study
(The American Society of Mechanical Engineers (ASME), 2016)Pool film boiling was studied by visualized quenching experiments on stainless steel spheres in water at the atmospheric pressure. The surfaces of the spheres were coated to be superhydrophobic (SHB), having a static contact ... -
An Experimental Study of Forced Heat Convection in Concentric and Eccentric Annular Channels
(The American Society of Mechanical Engineers (ASME), 2016)An experimental study of the effect of eccentricity on forced convective heat transfer was conducted for upward flows in vertical, openended annular channels with a diameter ratio of 0.61, a length to outer diameter ratio ... -
Conjugate Heat Transfer Characteristics of a Highly Thermal Loaded Film Cooling System in Hot and Multicomposition Gas Condition
(The American Society of Mechanical Engineers (ASME), 2016)Radiation would be more important in turbine heat transfer due to higher temperature and multicomposition gas conditions in the future. The main goal of the current study is analyzing the characteristics of conjugate heat ... -
Modeling of Effective Stagnant Thermal Conductivity of Porous Media
(The American Society of Mechanical Engineers (ASME), 2016)Based on onedimensional analysis of heat conduction, a general formula for the effective stagnant thermal conductivity of spatially periodic porous media is derived without assuming local thermal equilibrium. Furthermore, ... -
Tapered Twisted Tape Inserts for Enhanced Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2016)Insertion of twisted tapes in smooth channels is one of the passive methods used for enhancing heat transfer. Flow and associated heat transfer characteristics of these channels are very complex. Understanding this complex ... -
A Numerical Study of the Flow and Heat Transfer Characteristics of Outward Convex Corrugated Tubes With Twisted Tape Insert
(The American Society of Mechanical Engineers (ASME), 2016)This work presents a mathematical model for simulating the swirling flow in an outward convex corrugated tube with twistedtape insert (CT). The synergistic effect on the flow, heat transfer, and friction loss behaviors ... -
Numerical Study on Mixed Convection and Entropy Generation of a Nanofluid in a Lid Driven Square Enclosure
(The American Society of Mechanical Engineers (ASME), 2016)A numerical investigation of mixed convection due to a copper–water nanofluid in an enclosure is presented. The mixed convection is governed by moving the upper lid of the enclosure and imposing a vertical temperature ... -
Experimental Measurement of Direct Thermal Radiation Through Single Layer Square Cell Plain Woven Screens
(The American Society of Mechanical Engineers (ASME), 2016)Australian bushfires have repeatedly killed many people and caused severe damage. Previous studies have identified direct flame contact and radiant heat as the main cause of fatalities. The role of screens to limit the ... -
Axisymmetric Stagnation Flow and Heat Transfer of a Compressible Fluid Impinging on a Cylinder Moving Axially
(The American Society of Mechanical Engineers (ASME), 2016)The steadystate viscous flow and also heat transfer in the vicinity of an axisymmetric stagnation point on a cylinder moving axially with a constant velocity are investigated. Here, fluid with temperaturedependent density ... -
A Numerical Study of Turbulent Mixed Convection in a Smooth Horizontal Pipe
(The American Society of Mechanical Engineers (ASME), 2016)This paper presents a numerical study aimed at identifying a suitable turbulence model to describe the fully developed turbulent mixed convention of air in smooth horizontal pipes. The flow characteristics considered here ... -
Two Phase Convective Cooling for Ultrahigh Power Dissipation in Microprocessors
(The American Society of Mechanical Engineers (ASME), 2016)We present results of modeling for the design of microgaps for the removal of high heat fluxes via a strategy of high mass flux, high quality, and twophase forced convection. Modeling includes (1) thermodynamic analysis ... -
Analysis of the Heat Transfer Driving Parameters in Tight Rotor Blade Tip Clearances
(The American Society of Mechanical Engineers (ASME), 2016)Turbine rotor tips and casings are vulnerable to mechanical failures due to the extreme thermal loads they undergo during engine service. In addition to the heat flux variations during the engine transient operation, ... -
Exact Solution of Electroviscous Flow and Heat Transfer in a Semi annular Microcapillary
(The American Society of Mechanical Engineers (ASME), 2016)The electroosmotic flow (EOF) and associated heat transfer are investigated in a semiannular microcapillary. The potential, velocity, and temperature fields are solved by analytic approaches including the eigenfunction ... -
Flow and Heat Transfer Characteristics in Channels With Groove–Protrusions and Combination Effect With Ribs
(The American Society of Mechanical Engineers (ASME), 2016)Passive flow control and heat transfer enhancement technique has become an attractive method for device internal cooling with low resistance penalty. In the present paper, the flow and heat transfer characteristics in the ... -
Convection Heat Transfer of Power Law Fluids Along the Inclined Nonuniformly Heated Plate With Suction or Injection
(The American Society of Mechanical Engineers (ASME), 2016)A comprehensive analysis to convection heat transfer of powerlaw fluids along the inclined nonuniformly heated plate with suction or injection is presented. The effects of powerlaw viscosity on temperature field are taken ... -
Influence of a Magnetic Obstacle on Forced Convection in a Three Dimensional Duct With a Circular Cylinder
(The American Society of Mechanical Engineers (ASME), 2016)The predictions of flow structure, vortex shedding, and drag force around a circular cylinder are promoted by both academic interest and a wide range of practical situations. To control the flow around a circular cylinder, ... -
The Role of the Shear Work in Microtube Convective Heat Transfer: A Comparative Study
(The American Society of Mechanical Engineers (ASME), 2016)Convective heat transfer of a thermally developing rarefied gas flow in a microtube with boundary shear work, viscous dissipation, and axial conduction is analyzed numerically for both constant wall temperature (CWT) and ...