Journal of Heat Transfer: Recent submissions
Now showing items 2021-2040 of 3611
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Closure to “Discussion of â€کDo We Really Need “Entransyâ€?’â€
(The American Society of Mechanical Engineers (ASME), 2014)The following is our response to Herwig's paper [1] entitled, “Do we really need “entransyâ€? A critical assessment of a new quantity in heat transferâ€. In Herwig's paper, he questioned the consistency of G (entransy) ... -
Analysis of Flow and Heat Transfer Characteristics Around an Oval Shaped Cylinder
(The American Society of Mechanical Engineers (ASME), 2014)Numerical simulations and experimental study were carried out to investigate the flow and heat transfer characteristics of air flowing across different types of ovalshaped cylinders, for Reynolds numbers varying from 4000 ... -
Do We Really Need “Entransy� A Critical Assessment of a New Quantity in Heat Transfer Analysis
(The American Society of Mechanical Engineers (ASME), 2014)Recently, a group of scientists introduced a new quantity for the analysis of heat transfer problems. They called it entransy since according to their understanding it is both, an indication of the nature of energy as well ... -
Experimental Investigation of a Three Layer Oscillating Heat Pipe
(The American Society of Mechanical Engineers (ASME), 2014)An experimental investigation of a compact, triplelayer oscillating heat pipe (OHP) has been conducted to determine the channel layer effect on the heat transport capability in an OHP. The OHP has dimensions 13 mm thick, ... -
Evaluation of Pressure Drop Performance During Enhanced Flow Boiling in Open Microchannels With Tapered Manifolds
(The American Society of Mechanical Engineers (ASME), 2014)Boiling can provide several orders of magnitude higher performance than a traditional air cooled system in electronics cooling applications. It can dissipate large quantities of heat while maintaining a low surface temperature ... -
Computational Studies on Metal Foam and Heat Pipe Enhanced Latent Thermal Energy Storage
(The American Society of Mechanical Engineers (ASME), 2014)Thermal energy storage is a distinguishing component of a concentrating solar power (CSP) system, which enables uninterrupted operation of plant during periods of cloudy or intermittent solar availability. Latent thermal ... -
Forced Convection Heat Transfer From a Bank of Circular Cylinders Embedded in a Porous Medium
(The American Society of Mechanical Engineers (ASME), 2014)The characteristics of fluid flow and forced convection heat transfer around a bank of four circular cylinders embedded in a metallic or nonmetallic porous materials have been investigated numerically. Both a staggered and ... -
Thermophoretic and Nonlinear Convection in Non Darcy Porous Medium
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, we study the effects of nonlinear convection and thermophoresis in steady boundary layer flow over a vertical impermeable wall in a nonDarcy porous medium. Both the fluid temperature and the solute concentration ... -
Mass Transfer in Single Bends Under Annular Two Phase Flow Conditions
(The American Society of Mechanical Engineers (ASME), 2014)The distributions of the mass transfer coefficient in horizontal 90 deg bends were measured under a range of two phase annular flow conditions. A dissolving wall technique at a high Schmidt number (Sc = 1280) is used ... -
Effect of the Heat Pipe Adiabatic Region
(The American Society of Mechanical Engineers (ASME), 2014)The main motivation of conducting this work is to present a rigorous analysis and investigation of the potential effect of the heat pipe adiabatic region on the flow and heat transfer performance of a heat pipe under varying ... -
Longitudinal and Transverse Phonon Transport in Dielectric Crystals
(The American Society of Mechanical Engineers (ASME), 2014)Longitudinal and transverse modes of thermal disturbances in isotopically pure alkalihalide crystals are derived from phonon hydrodynamics. GuyerKrumhansl (GK) model of phonon scattering is first recovered by relating the ... -
Unsteady Laminar Forced Convective Tube Flow Under Dynamic Time Dependent Heat Flux
(The American Society of Mechanical Engineers (ASME), 2014)A new alltime model is developed to predict transient laminar forced convection heat transfer inside a circular tube under arbitrary timedependent heat flux. Slug flow (SF) condition is assumed for the velocity profile ... -
Direct Numerical Simulation of Forced Convective Heat Transfer From a Heated Rotating Sphere in Laminar Flows
(The American Society of Mechanical Engineers (ASME), 2014)The laminar forced convection of a heated rotating sphere in air has been studied using a threedimensional immersed boundary based direct numerical simulation method. A regular Eulerian grid is used to solve the modified ... -
The Effect of Heat Transfer Area Roughness on Heat Transfer Enhancement by Forced Convection
(The American Society of Mechanical Engineers (ASME), 2014)The paper deals with the visualization of temperature fields in the vicinity of profiled heat transfer surfaces and a subsequent analysis of local values of Nusselt numbers by forced air convection in an experimental ... -
A General Approach for Rectified Mass Diffusion of Gas Bubbles in Liquids Under Acoustic Excitation
(The American Society of Mechanical Engineers (ASME), 2014)Rectified mass diffusion serves as an important mechanism for dissolution or growth of gas bubbles under acoustic excitation with many applications in acoustical, chemical and biomedical engineering. In this paper, a general ... -
Heat Transfer in Fully Developed Laminar Flow of Power Law Fluids
(The American Society of Mechanical Engineers (ASME), 2014)In this work, we present approximate and exact solutions for the temperature profile and Nusselt number under fully developed laminar flow of a power law fluid inside pipes and between parallel plates. Constant wall ... -
Mixing and Heat Transfer Enhancement in Microchannels Containing Converging Diverging Passages
(The American Society of Mechanical Engineers (ASME), 2014)Fullydeveloped flow and heat transfer in periodic convergingdiverging channels with rectangular cross sections are studied using computational fluid dynamics (CFD) simulations for Reynolds numbers ranging from 50 to 200. ... -
Analytical Analysis of Magneto hydrodynamic (MHD) Transient Flow Past a Suddenly Started Infinite Vertical Plate With Thermal Radiation and Ramped Wall Temperature
(The American Society of Mechanical Engineers (ASME), 2014)An exact solution to the problem of a magnetohydrodynamic viscous, incompressible free convective flow of an electrically conducting, Newtonian nonGray fluid past a suddenly started infinite vertical plate with ramped wall ... -
Unsteady Two Dimensional Stagnation Point Flow and Heat Transfer of a Viscous, Compressible Fluid on an Accelerated Flat Plate
(The American Society of Mechanical Engineers (ASME), 2014)The general formulation and exact solution of the Navier–Stokes and energy equations regarding the problem of steady and unsteady twodimensional stagnationpoint flow and heat transfer is investigated in the vicinity of ... -
Stagnation Point Flow Toward a Stretching/Shrinking Sheet in a Nanofluid Containing Both Nanoparticles and Gyrotactic Microorganisms
(The American Society of Mechanical Engineers (ASME), 2014)The stagnationpoint flow and heat transfer toward a stretching/shrinking sheet in a nanofluid containing gyrotactic microorganisms with suction are investigated. Using a similarity transformation, the nonlinear system of ...