Journal of Heat Transfer: Recent submissions
Now showing items 2261-2280 of 3611
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Heat Transport in Evacuated Perlite Powders for Super Insulated Long Term Storages up to 300 آ°C
(The American Society of Mechanical Engineers (ASME), 2013)Vacuum super insulation (VSI) with expanded perlite powder is commonly used at cryogenic temperatures, but principally can also be adapted to applications at higher temperatures, such as the longterm storage of hot water ... -
Critical Invalidation of Temperature Dependence of Nanofluid Thermal Conductivity Enhancement
(The American Society of Mechanical Engineers (ASME), 2013)Of interest is the accurate measurement of the enhanced thermal conductivity of certain nanofluids free from the impact of natural convection. Owing to its simplicity, wide range of applicability and short response time, ... -
Using Generalized Dimensional Analysis to Obtain Reduced Effective Model Equations for Condensation in Slender Tubes With Rotational Symmetry
(The American Society of Mechanical Engineers (ASME), 2013)In this paper, we study the continuum physics model equations for condensation (two phase flow problems) in vertical tubes with small diameter and obtain reduced model equations. We found that generalization of dimensional ... -
Dissimilarity of Turbulent Fluxes of Momentum and Heat in Perturbed Turbulent Flows
(The American Society of Mechanical Engineers (ASME), 2013)The dissimilarity between the Reynolds stresses and the heat fluxes in perturbed turbulent channel and plane Couette flows was studied using direct numerical simulation. The results demonstrate that the majority of the ... -
On Laminar Magnetoconvection Flow in a Vertical Channel in the Presence of Heat Generation and Heat Absorption
(The American Society of Mechanical Engineers (ASME), 2013)The problem of hydromagnetic fully developed laminar mixed convection flow in a vertical channel and asymmetric wall heating conditions in the presence of electrical conductivity effect is considered through proper choice ... -
Optimized Expanding Microchannel Geometry for Flow Boiling
(The American Society of Mechanical Engineers (ASME), 2013)This study discusses the simulation of flow boiling in a microchannel and numerically predicts the effects of channel geometry variation along the flow direction. Experimental studies by Pan and collaborators and suggestions ... -
A Molecular Dynamics Simulation for Thermal Conductivity Evaluation of Carbon Nanotube Water Nanofluids
(The American Society of Mechanical Engineers (ASME), 2013)A nanofluid model is simulated by molecular dynamics (MD) approach. The simulated nanofluid has been a dispersion of single walled carbon nanotubes (CNT) in liquid water. Intermolecular force in liquid water has been ... -
A Novel, Noniterative Inverse Boundary Design Regularized Solution Technique Using the Backward Monte Carlo Method
(The American Society of Mechanical Engineers (ASME), 2013)In this paper, the inverse radiation boundary problem is solved using a simplified backward Monte Carlo method (MCM) for cases in which radiation is the dominant mode of heat transfer (i.e., radiative equilibrium). For an ... -
Mixed Convection Three Dimensional Flow in the Presence of Hall and Ion Slip Effects
(The American Society of Mechanical Engineers (ASME), 2013)This work is accomplished to investigate the Hall and ionslip effects on mixed convection threedimensional flow of a Maxwell fluid over a stretching vertical surface. The problem is first formulated and then nondimensionalized ... -
Convective Motion and Heat Transfer in a Slowly Rotating Fluid Quasi Sphere With Uniform Heat Source and Axial Gravity
(The American Society of Mechanical Engineers (ASME), 2013)The laminar natural convection of a rotating fluid quasisphere in the presence of an axial gravity field and uniform heat source is presented. The influence of the Rayleigh number Ra and the Taylor number Ta on the flow ... -
Experiment of Heat Transfer to Supercritical Water Flowing in Vertical Annular Channels
(The American Society of Mechanical Engineers (ASME), 2013)An experimental study of heat transfer to supercritical water has been performed at Xi'an Jiaotong University with a vertical annular tube. The annular test sections were constructed with an annular gap of 2 mm and an ... -
Heat Transfer in Rotating Multipass Rectangular Ribbed Channel With and Without a Turning Vane
(The American Society of Mechanical Engineers (ASME), 2013)This paper experimentally investigates the effect of a turning vane in hub region on heat transfer in a multipass rectangular channel with ribroughed wall at high rotation numbers. The experimental data were taken in the ... -
Numerical Study of Fluid Flow and Heat Transfer in the Enhanced Microchannel With Oblique Fins
(The American Society of Mechanical Engineers (ASME), 2013)Sectional oblique fins are employed in contrast to continuous fins in order to modulate flow in microchannel heat sink. The breakage of continuous fin into oblique sections leads to the reinitialization of both hydrodynamic ... -
Effect of Plate Characteristics on Axial Dispersion and Heat Transfer in Plate Heat Exchangers
(The American Society of Mechanical Engineers (ASME), 2013)A new mathematical model of singleblow transient testing technique is proposed for the determination of heat transfer and dispersion coefficients in plate heat exchangers (PHEs) in which the flow maldisrtibution effects ... -
The Effectiveness of Secondary Flow Produced by Vortex Generators Mounted on Both Surfaces of the Fin to Enhance Heat Transfer in a Flat Tube Bank Fin Heat Exchanger
(The American Society of Mechanical Engineers (ASME), 2013)Secondary flow is the flow in the cross section normal to the main flow. It plays an important role on the enhanced heat transfer and in the applications in other fields. Secondary flow can greatly enhance the convective ... -
Effects of Tube Row on Heat Transfer and Surface Wetting of Microscale Porous Layer Coated, Horizontal Tube, Falling Film Evaporator
(The American Society of Mechanical Engineers (ASME), 2013)An experimental study was conducted to investigate the effects of tube row on surface wetting and heat transfer of a horizontaltube, fallingfilm evaporator. Two types of the evaporator tubes were used for comparison: plain ... -
A Multipoint Flux Approximation of the Steady State Heat Conduction Equation in Anisotropic Media
(The American Society of Mechanical Engineers (ASME), 2013)In this work, we introduce multipoint flux (MF) approximation method to the problem of conduction heat transfer in anisotropic media. In such media, the heat flux vector is no longer coincident with the temperature gradient ... -
Resolved Order of Scattering for the Solution of Radiative Transfer Equation
(The American Society of Mechanical Engineers (ASME), 2013)The solution of the radiative transfer equation (RTE) becomes complicated when the participating medium is scattering and/or the boundary walls are reflecting. To reduce the complexity, the resolved order of scattering ... -
An Integrated Mechanical–Thermal Predictive Model of Thermal Contact Conductance
(The American Society of Mechanical Engineers (ASME), 2013)In this paper, an integrated mechanical–thermal predictive model of thermal contact conductance (TCC) between two nominally flat metallic rough surfaces is developed. Asperities on rough surface were approximated as ... -
Slip Effects on the Peristaltic Motion of Nanofluid in a Channel With Wall Properties
(The American Society of Mechanical Engineers (ASME), 2013)This article looks at the peristaltic flow of nanofluid in a channel with compliant walls. Brownian motion and thermophoresis effects are taken into consideration. Mathematical model is formulated by using long wavelength ...