Journal of Heat Transfer: Recent submissions
Now showing items 741-760 of 3611
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Development and Validation of a Thermometallurgical Model for Furnace-Based Austenitization During Hot Stamping
(American Society of Mechanical Engineers (ASME), 2019)In hot-forming die-quenching (HFDQ) boron manganese steel blanks are heated within a roller hearth furnace, and then simultaneously quenched and formed into fully martensitic body-in-white components. Industry needs models ... -
Exterior Shape Factors From Interior Shape Factors
(American Society of Mechanical Engineers (ASME), 2019)Shape factors for steady heat conduction enable quick and highly simplified calculations of heat transfer rates within bodies having a combination of isothermal and adiabatic boundary conditions. Many shape factors have ... -
Lattice Boltzmann Modeling of Natural Convection in a Large-Scale Cavity Heated From Below by a Centered Source
(American Society of Mechanical Engineers (ASME), 2019)Turbulent natural convection in a large-scale cavity has taken a great attention thanks to its importance in many engineering applications such as building. In this work, the lattice Boltzmann method (LBM) is used to ... -
Roles of Nanofluids, Temperature of Base Fluids, and Pressure Gradient on Heat Transfer Enhancement From a Cylinder: Uniformly Heated/Heat Flux
(American Society of Mechanical Engineers (ASME), 2019)Heat transfer from a cylinder of square cross section (either dissipating constant heat flux (qW) or maintaining at a constant temperature (TW)) placed near a plane wall under the incidence of nonuniform linear/nonlinear ... -
Influence of Optical Parameters on Magnetohydrodynamic Natural Convection in a Horizontal Cylindrical Annulus
(American Society of Mechanical Engineers (ASME), 2019)The coupled phenomena of radiative–magnetohyrodynamic (MHD) natural convection in a horizontal cylindrical annulus are numerically investigated. The buoyant flow is driven by the temperature difference between the inner ... -
Developing Convective Heat Transfer in Multiport Microchannel Flat Tubes
(American Society of Mechanical Engineers (ASME), 2019)An experimental investigation of fluid flow friction and heat transfer coefficient in simultaneously developing flow through a multiport microchannel flat tube (MMFT) was presented. The cross-sectional geometries of five ... -
Coupling Effects of Viscous Sheet and Ambient Fluid on Boundary Layer Flow and Heat Transfer in Power-Law Fluids
(American Society of Mechanical Engineers (ASME), 2019)This paper investigates the flow and heat transfer of power-law fluids over a stretching sheet where the coupling dynamics influence of viscous sheet and ambient fluid is taken into account via the stress balance. A modified ... -
Dynamic Modeling of the Heat Pipe-Assisted Annealing Line
(American Society of Mechanical Engineers (ASME), 2019)In a conventional continuous annealing line, the energy supplied to steel strip during heating is not recovered while cooling it. Therefore, an alternative heat transfer technology for energy efficient continuous annealing ... -
Development of Thinned Aluminum Flat Heat Pipe Through Inclined Wall and Press Process
(American Society of Mechanical Engineers (ASME), 2019)Heat pipes, commonly used for heat dissipation and thermal management in small electronic and communication devices, are regarded as an excellent solution. Heat pipes must be in surface rather than line contact to be applied ... -
End Effects on H2-Forced Convection in Rectangular Ducts of Large Aspect Ratios
(American Society of Mechanical Engineers (ASME), 2019)The H2-forced convection in a rectangular duct of large aspect ratio (>10) is studied. It is found that the short ends have non-negligible effects on the Nusselt number and the temperature distribution. Even at infinite ... -
New Closed-Form Thermal Boundary Layer Solutions in Shear Flow With Power-Law Velocity
(American Society of Mechanical Engineers (ASME), 2019)The forced convection problem for a developing thermal boundary layer in a parallel shear flow is studied. If the shear flow has a power-law velocity profile, exact similarity thermal boundary layer solutions in terms of ... -
Experimental Investigation of a Flat-Plate Closed-Loop Pulsating Heat Pipe
(American Society of Mechanical Engineers (ASME), 2019)The thermal performance and operating modi of a flat-plate closed-loop pulsating heat pipe (PHP) are experimentally observed. The PHP is manufactured through computer numerical controlled milling and vacuum brazing of ... -
Space Structures With Embedded Flat Plate Pulsating Heat Pipe Built by Additive Manufacturing Technology: Development, Test and Performance Analysis
(American Society of Mechanical Engineers (ASME), 2019)In this paper is described the development and the experimental study of a flat plate pulsating heat pipe (FPPHP) built by means of metal additive manufacturing (AM). In the recent years, small/medium aerospace companies ... -
Thermal Performance of Pulsating Heat Stripes Built With Plastic Materials
(American Society of Mechanical Engineers (ASME), 2019)A low-cost, flexible pulsating heat pipe (PHP) was built in a composite polypropylene sheet consisting of three layers joint together by selective laser welding, to address the demand of heat transfer devices characterized ... -
Investigation on Heat Transfer Performance and Flow Resistance Characteristics in Finned-Tube Heat Exchangers With Different Vortex Generator Positions
(American Society of Mechanical Engineers (ASME), 2019)The numerical simulation was carried out to investigate mechanism of the heat transfer enhancement in the fin-and-tube heat exchangers. As known, the vortex generators (VGs) were widely used to improve the thermal performance ... -
Experimental Investigations on the Thermal Performance of a Single Closed Loop Pulsating Heat Pipe Using TiO2 Nanofluid
(American Society of Mechanical Engineers (ASME), 2019)This paper describes the experimental investigations conducted on a closed loop pulsating heat pipe (CLPHP) for assessing the thermal performance. The pulsating heat pipe has a single closed loop made of copper. The working ... -
Towards a Durable Polymeric Internal Coating for Diabatic Sections in Wickless Heat Pipes
(American Society of Mechanical Engineers (ASME), 2019)Heat pipe characteristics are linked to the surface properties of the diabatic surfaces, and, in the evaporator, surface properties influence both the onset boiling temperature (TONB) and the critical heat flux (CHF). In ... -
Thermal Performance of Microelectronic Substrates With Submillimeter Integrated Vapor Chamber
(American Society of Mechanical Engineers (ASME), 2019)We develop a vapor chamber integrated with a microelectronic packaging substrate and characterize its heat transfer performance. A prototype of vapor chamber integrated printed circuit board (PCB) is fabricated through ... -
Frontiers, Fundamentals, and Future Directions of Transport: From Theory to Applications - A Special Issue Honoring Dr. P. S. Ayyaswamy
(American Society of Mechanical Engineers (ASME), 2019) -
Influence of Copper Oxide on Femtosecond Laser Surface Processed Copper Pool Boiling Heat Transfer Surfaces
(American Society of Mechanical Engineers (ASME), 2019)Pool boiling heat transfer with the use of femtosecond laser surface processing (FLSP) on copper surfaces has been studied. FLSP creates a self-organized micro/nanostructured surface. In the previous pool boiling heat ...