Journal of Heat Transfer: Recent submissions
Now showing items 2061-2080 of 3611
-
Determination of the Thermal Conductivity in Adobe With Several Models
(The American Society of Mechanical Engineers (ASME), 2014)The thermal conductivity of the earth materials conditions their ability as thermal isolator and its heating capacity, which has a direct impact on the energy consumption of the buildings built with these materials. Two ... -
Prediction of the Onset of Flow Instability in a Single Horizontal Microtube With an Inlet Orifice
(The American Society of Mechanical Engineers (ASME), 2014)A methodology to predict the onset of flow instability (OFI) in a single horizontal microtube with an inlet orifice is developed based on the predication of pressure drop. The predictive methodology states, for the same ... -
Impact of Flow Dynamics on the Heat Transfer of Bubbly Flow in a Microchannel
(The American Society of Mechanical Engineers (ASME), 2014)During nucleate flow boiling, the bubble dynamics affect the liquid flow field and the corresponding heat transfer process through several distinct mechanisms. At the microscale, this effect is different than at the macro ... -
Flow Boiling Heat Transfer of Liquid Nitrogen in Heated U Tubes
(The American Society of Mechanical Engineers (ASME), 2014)The flow boiling heat transfer characteristics of liquid nitrogen in three Utubes with different curvature ratios were investigated experimentally. The effects of inlet pressure, heat flux, and curvature ratio on heat ... -
Predicting Thermal System Performance and Estimating Parameters for Systems Burdened With Uncertainties and Noise Using Hierarchical Bayesian Inference
(The American Society of Mechanical Engineers (ASME), 2014)The precision of estimates of system performance and of parameters that affect the performance is often based upon the standard deviation obtained from the usual equation for the propagation of variances derived from a ... -
Non Darcy Natural Convection From a Vertical Cylinder Embedded in a Thermally Stratified and Nanofluid Saturated Porous Media
(The American Society of Mechanical Engineers (ASME), 2014)In recent years, nanofluids have attracted attention as a new generation of heat transfer fluids in building heating, heat exchangers, plants, and automotive cooling applications because of their excellent thermal performance. ... -
Effect of Temperature Dependent Fluid Properties on Heat Transfer in Turbulent Mixed Convection
(The American Society of Mechanical Engineers (ASME), 2014)The effect of the uniform fluid properties approximation (OberbeckBoussinesq (OB)) in turbulent mixed convection is investigated via direct numerical simulation (DNS) of water flows with viscosity (خ¼) and thermal expansion ... -
Experimental and Numerical Investigation on Natural Convection Heat Transfer of TiO2–Water Nanofluids in a Square Enclosure
(The American Society of Mechanical Engineers (ASME), 2014)An experimental and numerical investigation on natural convection heat transfer of TiO2–water nanofluids in a square enclosure was carried out for the present work. TiO2–water nanofluids with different nanoparticle ... -
Cavitation Bubble Collapse Near a Heated Wall and Its Effect on the Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2014)In the present work, a numerical investigation on the mechanism of heat transfer enhancement by a cavitation bubble collapsing near a heated wall has been presented. The Navier–Stokes equations and volume of fluid (VOF) ... -
Performance Augmentation and Optimization of Aluminum Oxide Water Nanofluid Flow in a Two Fluid Microchannel Heat Exchanger
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, laminar forced convection and entropy generation in a counter flow microchannel heat exchanger (CFMCHE) with two different working fluids in hot and cold channels, i.e., pure water and Al2O3–water nanofluid ... -
Nonlinear Heat Transfer in a Two Layer Flow With Nanofluids by OHAM
(The American Society of Mechanical Engineers (ASME), 2014)The problem of fully developed steady, laminar, incompressible flow in a vertical channel is studied analytically, one region is filled with water based copper nanofluid and the other region is filled with clear viscous ... -
Experimental Investigation of Thermal and Hydraulic Performance of V Shape Corrugated Carbon Foam
(The American Society of Mechanical Engineers (ASME), 2014)In aircooled heat exchangers, airside thermal resistance is usually the largest compared to conduction and liquidside thermal resistances. Thus, reducing the airside thermal resistance can greatly improve overall cooling ... -
Effects of Brownian Diffusion and Thermophoresis on the Laminar Forced Convection of a Nanofluid in a Channel
(The American Society of Mechanical Engineers (ASME), 2014)A steady laminar forced convection in a parallel–plane channel using nanofluids is studied. The flow is assumed to be fully developed, and described through the Hagen–Poiseuille profile. A boundary temperature varying ... -
Stable Nanofluids for Convective Heat Transfer Applications
(The American Society of Mechanical Engineers (ASME), 2014)Nanofluids are stable dispersions of ultrafine or nanoscale metallic, metal oxide, ceramic particles in a given base fluid. It is reported that nanofluids register an extraordinarily high level of thermal conductivity, and ... -
Impact of Delta Winglet Pair of Vortex Generators on the Thermal and Hydraulic Performance of a Triangular Channel Using Al2O3–Water Nanofluid
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents the laminar forced convection of Al2O3–water nanofluid in a triangular channel, subjected to a constant and uniform heat flux at the slant walls, using deltawinglet pair (DWP) of vortex generator which ... -
Characteristics of Fully Developed Flow and Heat Transfer in Channels With Varying Wall Geometry
(The American Society of Mechanical Engineers (ASME), 2014)Present study focuses on numerical investigation of fully developed flow and heat transfer through three channels having sineshaped, triangleshaped, and arcshaped wall profiles. All computations are performed at Reynolds ... -
Experimental Investigation of Flow Condensation in Microgravity
(The American Society of Mechanical Engineers (ASME), 2014)Future manned space missions are expected to greatly increase the space vehicle's size, weight, and heat dissipation requirements. An effective means to reducing both size and weight is to replace singlephase thermal ... -
A Study on Gas–Liquid Film Thicknesses and Heat Transfer Characteristics of Vapor–Gas Condensation Outside a Horizontal Tube
(The American Society of Mechanical Engineers (ASME), 2014)Noncondensable gases deteriorate heat transfer in the condensation process. It is therefore necessary to study vapor–gas condensation heat transfer process and analyze main factors influencing the process. Based on the ... -
Natural Convection Heat Transfer Performance of Non Newtonian Power Law Fluids Enclosed in Cavity With Complex Wavy Surfaces
(The American Society of Mechanical Engineers (ASME), 2014)Numerical simulations are performed to investigate the natural convection heat transfer performance of nonNewtonian powerlaw fluids in a cavity bounded by wavy vertical walls with different temperatures and flat horizontal ... -
The Onset of Convection in an Internally Heated Nanofluid Layer
(The American Society of Mechanical Engineers (ASME), 2014)We analytically studied the onset of convection, induced by internal heating, such as that produced by microwave heating or chemical reaction, in a horizontal layer of a nanofluid subject to Brownian motion and thermophoresis. ...