Journal of Heat Transfer: Recent submissions
Now showing items 1801-1820 of 3611
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Constructal Law: Optimization as Design Evolution
(The American Society of Mechanical Engineers (ASME), 2015)Here, I review the physics meaning of optimization, knowledge and design evolution, and why these concepts and human activities are profoundly useful for human life. A law of physics is a concise statement that summarizes ... -
Multiconfiguration Shape Optimization of Internal Cooling Systems of a Turbine Guide Vane Based on Thermomechanical and Conjugate Heat Transfer Analysis
(The American Society of Mechanical Engineers (ASME), 2015)This study concerns optimization of shapes, locations, and dimensions of internal cooling passages within a turbine vane under severe environments. The basic aim is to achieve a design that minimizes the average temperature ... -
Constructal Law Applications to Efficient Design: Electrokinetics Systems and Enclosures for Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2015)This review paper documents two classes of problem to which the constructal law of design is applied. The first part of the paper is about the transport of ionic species through a porous medium by means of electrokinetics. ... -
Foreword to Special Issue on Advances in Optimization Methods in Heat and Mass Transfer
(The American Society of Mechanical Engineers (ASME), 2015)Improving heat transfer effectiveness or/and controlling pressure losses requires novel techniques to develop systems of progressively higher heat transfer performance. Optimization techniques can provide a path to the ... -
Comparative Study Between Experimental Data and Numerical Results of Turbulent Mixed Convection in a Ventilated Cavity
(The American Society of Mechanical Engineers (ASME), 2015)Experimental and numerical results of heat transfer by mixed convection in a ventilated cavity are presented. The results were obtained for a 1.0 m أ— 1.0 m أ— 1.0 m cavity. The inlet and outlet dimensions were of ... -
Passivation and Performance of Inorganic Aqueous Solutions in a Grooved Aluminum Flat Heat Pipe
(The American Society of Mechanical Engineers (ASME), 2015)Aluminum heat pipes have traditionally been incompatible with water and waterbased fluids because they quickly react to generate noncondensable hydrogen gas (NCG). Two different inorganic aqueous solutions (IAS) are tested ... -
Implementation of High Order Spherical Harmonics Methods for Radiative Heat Transfer on openfoam
(The American Society of Mechanical Engineers (ASME), 2015)A general formulation of the spherical harmonics (PN) methods was developed recently to expand the method to high orders of PN. The set of N(N + 1)/2 threedimensional secondorder elliptic PDEs formulation and their ... -
Correlation Equations for Natural Convective Heat Transfer From Two Inclined Vertically Spaced Narrow Isothermal Flat Plates
(The American Society of Mechanical Engineers (ASME), 2015)Natural convective flow over narrow plates induces an inward flow near the edges of the plate causing the flow to be threedimensional near the edges of the plate. This influences the heat transfer rate near the edges of ... -
Computational Fluid Dynamics and Heat Transfer Analysis for a Novel Heat Exchanger
(The American Society of Mechanical Engineers (ASME), 2015)Computational fluid dynamics (CFD) and heat transfer simulations are conducted for a novel heat exchanger. The heat exchanger consists of semicircle crosssectioned tubes that create narrow slots oriented in the streamwise ... -
Two Dimensional Free Convection Heat Transfer Below a Horizontal Hot Isothermal Flat Strip
(The American Society of Mechanical Engineers (ASME), 2015)Convection heat transfer below a horizontal, hot, and isothermal strip of infinite length and width of 2L embedded in fluids with different Prandtl number (Pr) and Nusselt number (Nu) is analyzed with the aid of integral ... -
The Joule Heating Effects on Natural Convection of Participating Magnetohydrodynamics Under Different Levels of Thermal Radiation in a Cavity
(The American Society of Mechanical Engineers (ASME), 2015)A numerical study is conducted for the Joule heating effects on fluid flow and heat transfer of radiatively participating magnetohydrodynamics (MHD) under different levels of thermal radiation considering the Hall effects ... -
The Effect of Vertical Throughflow on Thermal Instability in a Porous Medium Layer Saturated by a Nanofluid: A Revised Model
(The American Society of Mechanical Engineers (ASME), 2015)The model developed in our previous paper (Nield and Kuznetsov, 2011, “The Effect of Vertical Throughflow on Thermal Instability in a Porous Medium Layer Saturated by a Nanofluid,†Transp. Porous Media, 87(3), pp. ... -
Laminar Natural Convection of Bingham Fluids in Inclined Differentially Heated Square Enclosures Subjected to Uniform Wall Temperatures
(The American Society of Mechanical Engineers (ASME), 2015)The effects of inclination 180deg≥د†â‰¥0deg on steadystate laminar natural convection of yieldstress fluids, modeled assuming a Bingham approach, have been numerically analyzed for nominal values of Rayleigh number Ra ... -
Droplet First and Second Consecutive Impacts and Droplet–Droplet Collision on a Hot Surface in the Film Boiling Region
(The American Society of Mechanical Engineers (ASME), 2015)We studied experimentally the behavior of a single cold water droplet that falls onto a hot horizontal flat solid surface in the film boiling region. We found that when the droplet hits the surface (for the first time), ... -
Flow Boiling Heat Transfer and Two Phase Flow Instability of Nanofluids in a Minichannel
(The American Society of Mechanical Engineers (ASME), 2015)Singlephase convective heat transfer of nanofluids has been studied extensively, and different degrees of enhancement were observed over the base fluids, whereas there is still debate on the improvement in overall thermal ... -
Surfactant Based Cu–Water Nanofluid Spray for Heat Transfer Enhancement of High Temperature Steel Surface
(The American Society of Mechanical Engineers (ASME), 2015)Spray cooling is critical in many industrial applications to extract large heat fluxes from metal parts, such as hypervapotron in nuclear fusion reactors, heat treatment of steel plates in runout table (ROT), electronic ... -
Specific Heat Determination of Metallic Thin Films at Room Conditions
(The American Society of Mechanical Engineers (ASME), 2015)A methodology to evaluate the specific heat of metallic thin films at constant pressure and 300 K by means of the heating profile is proposed. Changes on the electrical resistance of metallic films after the application ... -
Temperature and Entropy Generation Analyses Between and Inside Rotating Cylinders Using Copper–Water Nanofluid
(The American Society of Mechanical Engineers (ASME), 2015)Entropy generation is squarely linked with irreversibility, and consequently with exergy destruction within a thermal system. This study concerns with the temperature distribution, and local and volumetric averaged entropy ... -
Computational Analysis of Conjugate Heat Transfer in Gaseous Microchannels
(The American Society of Mechanical Engineers (ASME), 2015)A fully conjugate heat transfer analysis of gaseous flow in short microchannels is presented. Navier–Stokes equations, coupled with Maxwell and Smoluchowski slip and temperature jump boundary conditions, are used for ... -
Experimental Investigation of Wall Nucleation Characteristics in Flow Boiling
(The American Society of Mechanical Engineers (ASME), 2015)Wall nucleation experiments have been performed in a vertical annulus test section for investigation of the bubble departure diameter and bubble departure frequency. The experimental data in forced convective subcooled ...