Journal of Heat Transfer: Recent submissions
Now showing items 2161-2180 of 3611
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Thermal Radiative Properties of a SiC Grating on a Photonic Crystal
(The American Society of Mechanical Engineers (ASME), 2013)Spectral and directional control of thermal emission holds substantial importance in different kinds of applications, where heat transfer is predominantly by thermal radiation. Several configurations have previously been ... -
Condensation on Superhydrophobic Copper Oxide Nanostructures
(The American Society of Mechanical Engineers (ASME), 2013)Condensation is an important process in both emerging and traditional power generation and water desalination technologies. Superhydrophobic nanostructures promise enhanced condensation heat transfer by reducing the ... -
Tunable Negative Refractive Index Metamaterials Based on Thermochromic Oxides
(The American Society of Mechanical Engineers (ASME), 2013)A tunable metamaterial is proposed by combining a thermochromic oxide with a fishnet structure. The reflection and transmission coefficients are calculated by finitedifference timedomain (FDTD) method. The effective ... -
Dynamic Characterization of a Valveless Micropump Considering Entrapped Gas Bubbles
(The American Society of Mechanical Engineers (ASME), 2013)Unexpected gas bubbles in microfluidic devices always bring the problems of clogging, performance deterioration, and even device functional failure. For this reason, the aim of this paper is to study the characterization ... -
Study of Liquid Metal Based Heating Method for Temperature Gradient Focusing Purpose
(The American Society of Mechanical Engineers (ASME), 2013)Temperature gradient focusing (TGF) is a highly efficient focusing technique for the concentration and separation of charged analytes in microfluidic channels. The design of an appropriate temperature gradient is very ... -
Statistical Analysis of Surface Nanopatterned Thin Film Solar Cells Obtained by Inverse Optimization
(The American Society of Mechanical Engineers (ASME), 2013)This work is a statistical study of the broadband light absorption in thin film solar cells, enhanced by metallic surface nanotexturing. We consider optimum grating structures on the surface of amorphous silicon solar cells ... -
Conjugated Convection Conduction Analysis in Microchannels With Axial Diffusion Effects and a Single Domain Formulation
(The American Society of Mechanical Engineers (ASME), 2013)An extension of a recently proposed single domain formulation of conjugated conduction–convection heat transfer problems is presented, taking into account the axial diffusion effects at both the walls and fluid regions, ... -
Thermophysical Properties and Pool Boiling Characteristics of Water in Polyalphaolefin Nanoemulsion Fluids
(The American Society of Mechanical Engineers (ASME), 2013)In this work, thermophysical properties, microstructure, and pool boiling characteristics of waterinpolyalphaolefin (PAO) nanoemulsion fluids have been measured in the water concentration range of 0–10.3 vol. %, in order ... -
Development of Boiling Type Cooling System Using Electrohydrodynamics Effect
(The American Society of Mechanical Engineers (ASME), 2013)This paper describes results from an experimental study of the effect of an electric field on nucleate boiling and the critical heat flux (CHF) in pool boiling at atmospheric pressure. A dielectric liquid of HFE7100 (3 M ... -
Pool Boiling Heat Transfer of Borated (H3BO3) Water on a Nanoporous Surface
(The American Society of Mechanical Engineers (ASME), 2013)With regard to potential application in pressurized water reactors (PWRs), a nanoporous heated surface was tested in pool boiling of an aqueous solution of boric acid (H3BO3), or borated water (1% volume concentration). ... -
Mean Free Path Effects on the Experimentally Measured Thermal Conductivity of Single Crystal Silicon Microbridges
(The American Society of Mechanical Engineers (ASME), 2013)Accurate thermal conductivity values are essential for the successful modeling, design, and thermal management of microelectromechanical systems (MEMS) and devices. However, the experimental technique best suited to measure ... -
A Comparative Study of Thermal Metrology Techniques for Ultraviolet Light Emitting Diodes
(The American Society of Mechanical Engineers (ASME), 2013)Methods used to measure the temperature of AlxGa1−xN based ultraviolet light emitting diodes (UV LEDs) are based on optical or electrical phenomena that are sensitive to either local, surface, or average temperatures ... -
Nanosecond Time Resolved Measurements of Transient Hole Opening During Laser Micromachining of an Aluminum Film
(The American Society of Mechanical Engineers (ASME), 2013)Laser micromachining of an aluminum film on a glass substrate is investigated using a timeresolved transmission imaging technique with nanosecond resolution. Micromachining is performed using a 7 ns pulsewidth Nd:YAG ... -
Comparison of Atomistic and Continuum Methods for Calculating Ballistic Phonon Transmission in Nanoscale Waveguides
(The American Society of Mechanical Engineers (ASME), 2013)We compare two methods for the calculation of mode dependent ballistic phonon transmission in nanoscale waveguides. The first method is based on continuum acoustic waveguide theory and uses an eigenmode expansion to solve ... -
Similarity Solution for Heat Convection From a Porous Rotating Disk in a Flow Field
(The American Society of Mechanical Engineers (ASME), 2013)A mathematical method is described for the analytical solution of the convective heat transfer rates from a rotating isothermal and porous disk in a uniform flow field. By applying the appropriate velocity component of the ... -
Foreword to Special Issue on Micro/Nanoscale Heat and Mass Transfer
(The American Society of Mechanical Engineers (ASME), 2013)The third ASME Micro/Nanoscale Heat and Mass Transfer International Conference (MNHMT2012) was held in Atlanta, GA on March 3–6, 2012 (http://www.asmeconferences.org/MNHMT2012). The conference was cosponsored by the ASME ... -
Design and Optimization of Composite Rectangular Fins Using the Relative Inverse Thermal Admittance
(The American Society of Mechanical Engineers (ASME), 2013)The concept of relative inverse admittance applied to composite fins optimization in the case of longitudinal rectangular fins under 2D heat conduction is presented in this work. Here, different values for convective ... -
Achieving a Specific Nonuniform Heat Flux With an Electrical Heat Flux Plate
(The American Society of Mechanical Engineers (ASME), 2013)A voltage applied across a uniform plate results in a uniform ohmic heat dissipation, useful for conducting heat transfer experiments or preventing unacceptably low temperatures on spacecraft components. Most experiments ... -
Mode Wise Thermal Conductivity of Bismuth Telluride
(The American Society of Mechanical Engineers (ASME), 2013)Thermal properties and transport control are important for many applications, for example, low thermal conductivity is desirable for thermoelectrics. Knowledge of modewise phonon properties is crucial to identify dominant ... -
Influence of Space Varying Surface Heat Flux on the Heat Transfer Due to a Moving Fluid Over a Moving Surface
(The American Society of Mechanical Engineers (ASME), 2013)Boundarylayer forced convective heat transfer at a moving flat surface parallel to a moving stream is presented for the case where the plate is subjected to a variable heat flux. In particular, we assume that the surface ...