Browsing Journal of Thermal Science and Engineering Applications by Title
Now showing items 1280-1295 of 1295
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Unsteady Conjugate Heat Transfer Analysis of an Immersed Particle Innovative Heat Exchanger
(The American Society of Mechanical Engineers (ASME), 2012)The improvement of both heat recovery Joule-Brayton cycles and closed cycle (externally fired) gas turbine plants is strongly limited by the availability of high efficiency heat exchangers. In ... -
Unsteady Heat Transfer Between Gas and Tube in a Wave Rotor Refrigerator
(The American Society of Mechanical Engineers (ASME), 2020)The performance of a wave rotor refrigerator (WRR) is strongly affected by unsteady heat transfer between gas and tubes. In this work, the mechanism of the heat transfer and its effects on WRR were investigated numerically ... -
Use of a Quasi-Steady Ablation Model for Design Sensitivity With Uncertainty Propagation
(The American Society of Mechanical Engineers (ASME), 2017)Sensitivity analysis and design calculations are often best performed using low-order models. This work details work done on adding complementary pieces to a low-order, quasi-steady-state ablation model to facilitate ... -
Use of Convolutional Neural Network Image Classification and High-Speed Ion Probe Data Toward Real-Time Detonation Characterization in a Water-Cooled Rotating Detonation Engine
(The American Society of Mechanical Engineers (ASME), 2023)As rotating detonation engines (RDEs) progress in maturity, the importance of monitoring advancements toward development of active control becomes more critical. Experimental RDE data processing at time scales which satisfy ... -
User Preference-Oriented Design of Heat Dissipating Elements for Densely Packaged Transistors With Consideration of Design Robustness
(The American Society of Mechanical Engineers (ASME), 2017)Tremendous efforts had been given to ensure proper heat dissipation in electronics cooling but very seldom consider design robustness and user preferences in design principles of the heat-dissipating devices. Multi-objective ... -
Using Neural Networks for Thermal Analysis of Heat Conduction
(The American Society of Mechanical Engineers (ASME), 2023)Predicting heat transfer mechanisms through solids and fluids is a continuously demanding research topic since accurate and fast temperature calculation is crucial in many engineering and industrial applications. This ... -
Utilization of Advanced Working Fluids With Biporous Evaporators
(The American Society of Mechanical Engineers (ASME), 2011)A novel fluid for use as a working fluid in a heat pipe has been tested at UCLA. The fluid was discovered originally in use with a device consisting of a metal tube charged with the ... -
Validated Simulations of Heat Transfer From a Vertical Heated-Rod Array to a Helium-Filled Isothermal Enclosure
(The American Society of Mechanical Engineers (ASME), 2018)Measurements of heat transfer from an array of vertical heater rods to the walls of a square, helium-filled enclosure are performed for a range of enclosure temperatures, helium pressures, and rod heat generation rates. ... -
Validation of a Two-Phase CFD Air/Mist Film Cooling Model With Experimental Details—Part I: Development of an Experimental Test Facility
(The American Society of Mechanical Engineers (ASME), 2022)Film cooling is a cooling technique widely used in high-performance gas turbines to protect the turbine airfoils from being damaged by hot flue gases. Motivated by the need to further improve the turbine hot section cooling ... -
Validation of a Two-Phase CFD Air/Mist Film Cooling Model With Experimental Details—Part II: Computational Model Validation
(The American Society of Mechanical Engineers (ASME), 2022)In this Part II of the paper, a numerical study has been performed to validate the multiphase computational fluid dynamics (CFD) model by comparing its results to the experimental data of an air/mist film cooling study ... -
Vapor Chamber Acting as a Heat Spreader for Power Module Cooling
(The American Society of Mechanical Engineers (ASME), 2009)This paper presents an integrated power electronics module with a vapor chamber (VC) acting as a heat spreader to transfer the heat from the insulated gate bipolar transistor (IGBT) module to ... -
Vertical Temperature Profiles and Cooling Load in Large Spaces Ventilated by Stratified Air-Conditioning Systems: Scale-Model Experiment and Nodal Modeling
(The American Society of Mechanical Engineers (ASME), 2020)An improved heat balance nodal model is proposed to predict the inner wall temperature profiles and calculate the stratified air-conditioning load in large spaces. The model aims to weaken the correlation between load ... -
Viability of Spray Cooling an Air-Cooled Condenser in a Personnel Microclimate Cooling System
(The American Society of Mechanical Engineers (ASME), 2012)Attaining a reasonable size and weight for a personnel microclimate cooling system for an individual person who operates away from logistical support remains a problem. This work analyzes whether ... -
Waste Heat Recovery in Data Centers Using Sorption Systems
(The American Society of Mechanical Engineers (ASME), 2012)Of the total electricity consumption by the United States in 2006, more than 1% was used on data centers alone; a value that continues to rise rapidly. Of the total amount of electricity a ... -
Wearable Engine-Driven Vapor-Compression Cooling System for Elevated Ambients
(The American Society of Mechanical Engineers (ASME), 2009)The development of a wearable cooling system for use in elevated-temperature environments by military, fire-fighting, chemical-response, and other hazardous duty personnel is underway. Such a system ... -
Working Fluid Selection and Technoeconomic Optimization of a Turbocompression Cooling System
(The American Society of Mechanical Engineers (ASME), 2018)Low grade waste heat recovery presents an opportunity to utilize typically wasted energy to reduce overall energy consumption and improve system efficiencies. In this work, the technoeconomic performance of a turbocompression ...