Journal of Heat Transfer: Recent submissions
Now showing items 1841-1860 of 3611
-
The Use of Inverse Heat Conduction Models for Estimation of Transient Surface Heat Flux in Electroslag Remelting
(The American Society of Mechanical Engineers (ASME), 2015)Three inverse heat conduction models were evaluated for their ability to predict the transient heat flux at the interior surface of the copper mold in the electroslag remelting (ESR) process for use in validating numerical ... -
A Note on the Correspondence Between Certain Nanofluid Flows and Standard Fluid Flows
(The American Society of Mechanical Engineers (ASME), 2015)This note introduces a rescaling approach that greatly simplifies the evaluation of flow and physical parameters such as skin friction and heat transfer rate in recent single phase nanofluids research for which the nanofluids ... -
Formation of Nano Adsorption Layer and Its Effects on Nanofluid Spray Heat Transfer Performance
(The American Society of Mechanical Engineers (ASME), 2015)For spray cooling using nanofluid as the working fluid, a nanoadsorption layer is formed on the heated surface and affects the heat transfer performance of the cooling system. This study performs an experimental investigation ... -
Thermofluidic Characteristics of a Porous Ventilated Brake Disk
(The American Society of Mechanical Engineers (ASME), 2015)We introduce a new class of ventilated brake disk which incorporates an open cellular core: wirewoven bulk diamond (WBD). Transient and steadystate thermofluidic characteristics are presented. As reference, a commercially ... -
Stochastic Nature of Wall Nucleation and Its Impact on the Time Average Boundary Condition
(The American Society of Mechanical Engineers (ASME), 2015)A new interpretation of the characteristic area and frequency appearing in the wall nucleation source from the point of view of the stochastic nature of this phenomenon is presented in this paper. This analysis shows ... -
Modeling of Dry Out Incipience for Flow Boiling in a Circular Microchannel at a Uniform Heat Flux
(The American Society of Mechanical Engineers (ASME), 2015)Dryout is an essential phenomenon that has been observed experimentally in both slug and annular flow regimes for flow boiling in mini and microchannels. The dryout leads to a drastic drop in heat transfer coefficient, ... -
Heat Flux Controlled Pool Boiling of Zirconia–Water and Silver–Water Nanofluids on a Flat Plate: A Coupled Map Lattice Simulation
(The American Society of Mechanical Engineers (ASME), 2015)In the present work, the characteristic atmospheric saturated heat flux controlled pool boiling curves for zirconia–water and silver–water nanofluids have been reproduced by the coupled map lattice (CML) method using ... -
Experimental Study of Linear and Radial Two Phase Heat Transport Devices Driven by Electrohydrodynamic Conduction Pumping
(The American Society of Mechanical Engineers (ASME), 2015)Heat pipes are well known as simple and effective heat transport devices, utilizing twophase flow and the capillary phenomenon to remove heat. However, the generation of capillary pressure requires a wicking structure and ... -
Evaporating Liquid Film Flow in the Presence of Micro Encapsulated Phase Change Materials: A Numerical Study
(The American Society of Mechanical Engineers (ASME), 2015)This paper numerically investigates the heat transfer characteristics of a mesoscale liquid film slurry flow containing microencapsulated phase change material (MEPCM) in the presence of evaporation. The twophase evaporating ... -
Flow Visualization and Stream Temperature Measurement of Liquid Hydrogen Line Chill Down Experiments
(The American Society of Mechanical Engineers (ASME), 2015)A thermally representative tanktotank transfer line was designed and tested at SMiRF at NASA Glenn to simulate liquid hydrogen transfer from a Low Earth Orbit depot storage tank to a customer receiver tank. The line was ... -
Bubble Ebullition on a Hydrophilic Surface
(The American Society of Mechanical Engineers (ASME), 2015)Nucleate boiling heat transfer depends on various aspects of the bubble ebullition, such as the bubble nucleation, growth and departure. In this work, a synchronized highspeed optical imaging and infrared (IR) thermography ... -
Cylindrical Thermal Cloak Based on the Path Design of Heat Flux
(The American Society of Mechanical Engineers (ASME), 2015)When heat flux flows in a given medium, its path will solely be determined. This implies that material parameters determined by the predesigned path of heat flux will guide heat to flow along the designed path. Based on ... -
Wettability Control of VACNT Array through Atmospheric Plasma Treatment
(The American Society of Mechanical Engineers (ASME), 2015)Wetting characteristics of the vertically aligned carbon nanotube (VACNT) array surface can be modified by atmospheric plasma treatment with masks. The plasma treatment of the VACNT array surface was performed by moving ... -
Thermal Property Imaging of Aluminum Nitride Composites
(The American Society of Mechanical Engineers (ASME), 2015)Frequency domain thermoreflectance (FDTR) imaging is used to create quantitative thermal conductivity maps of porous Aluminum Nitride (AlN) particles embedded in epoxy. The AlNepoxy composite is polished and coated with a ... -
Imaging Thermal Transport in Graphene
(The American Society of Mechanical Engineers (ASME), 2015)Frequency domain thermoreflectance (FDTR) imaging is used to create quantitative maps of both inplane thermal conductance and crossplane thermal boundary conductance (TBC) for graphene multilayers encased between titanium ... -
A Coupled Ordinates Method for Convergence Acceleration of the Phonon Boltzmann Transport Equation
(The American Society of Mechanical Engineers (ASME), 2015)Sequential numerical solution methods are commonly used for solving the phonon Boltzmann transport equation (BTE) because of simplicity of implementation and low storage requirements. However, they exhibit poor convergence ... -
Artificial Neural Network Based Prediction of Heat Transfer From Horizontal Tube Bundles Immersed in Gas–Solid Fluidized Bed of Large Particles
(The American Society of Mechanical Engineers (ASME), 2015)Artificial neural network (ANN) modeling of heat transfer from horizontal tube bundles immersed in gas fluidized bed of large particles (mustard, raagi and bajara) was investigated. The effect of fluidizing gas velocity ... -
Heat Transfer Photogallery
(The American Society of Mechanical Engineers (ASME), 2015)The purpose of publishing these entries is to draw attention to the innovative features of visualization techniques and esthetic qualities of thermal processes. To focus on visualization images and schematics for each ... -
Numerical Simulations of the Near Field Region of Film Cooling Jets Under High Free Stream Turbulence: Application of RANS and Hybrid URANS/Large Eddy Simulation Models
(The American Society of Mechanical Engineers (ASME), 2015)This paper investigates the flow field and thermal characteristics in the nearfield region of film cooling jets through numerical simulations using Reynoldsaveraged Navier–Stokes (RANS) and hybrid unsteady RANS (URANS)/large ... -
The Effect of Varying Fiber Characteristics on the Simultaneous Measurement of Heat and Momentum Transfer to Flowing Fiber Suspensions
(The American Society of Mechanical Engineers (ASME), 2015)Heat transfer and pressure loss measurements were obtained simultaneously for a range of wood pulp fiber suspensions flowing in a pipeline. Data were obtained over a selected range of flow rates and temperatures from a ...