Results 41 to 50 of about 1,571,082 (390)

Transcritical Behavior of Methane in the Cooling Jacket of a Liquid-Oxygen/Liquid-Methane Rocket-Engine Demonstrator

open access: yesEnergies, 2022
The successful design of a liquid rocket engine is strictly linked to the development of efficient cooling systems, able to dissipate huge thermal loads coming from the combustion in the thrust chamber.
Daniele Ricci   +2 more
doaj   +1 more source

Laser Optomechanics [PDF]

open access: yesScientific Reports 5 (2015) 13700, 2015
Cavity optomechanics explores the coupling between the optical field and the mechanical oscillation to induce cooling and regenerative oscillation in a mechanical oscillator. So far, optomechanics relies on the detuning between the cavity and an external pump laser, where the laser acts only as a power supply.
arxiv   +1 more source

Numerical Study on Flow and Heat Transfer of Supercritical Hydrocarbon Fuel in Curved Cooling Channel

open access: yesApplied Sciences, 2022
The fluid flow and heat transfer of hydrocarbon fuel play a significant role in developing regenerative cooling technology for advanced aeroengines. Numerical simulations have been conducted to investigate the flow and heat transfer characteristics of ...
Ying Zhang   +5 more
doaj   +1 more source

Energy-Environment evaluation and Forecast of a Novel Regenerative turboshaft engine combine cycle with DNN application [PDF]

open access: yesarXiv, 2022
In this integrated study, a turboshaft engine was evaluated by adding inlet air cooling and regenerative cooling based on energy-environment analysis. First, impacts of flight-Mach number, flight altitude, the compression ratio of compressor-1 in the main cycle, the turbine inlet temperature of turbine-1 in the main cycle, temperature fraction of ...
arxiv  

Effects of thermal and pressure loads on structural deformation of liquid oxygen/methane engine combustion chamber

open access: yesJournal of Thermal Science and Technology, 2020
To investigate the influences of thermal and pressure loads on the structural deformation of the Liquid Oxygen/Methane rocket engine combustion chamber, a complete thermo-structural analysis scheme including fluid-thermal analysis and structural finite ...
Di LIU   +4 more
doaj   +1 more source

Seasonal Analysis Comparison of Three Air-Cooling Systems in Terms of Thermal Comfort, Air Quality and Energy Consumption for School Buildings in Mediterranean Climates

open access: yesEnergies, 2021
Efficient air-cooling systems for hot climatic conditions, such as Southern Europe, are required in the context of nearly Zero Energy Buildings, nZEB. Innovative air-cooling systems such as regenerative indirect evaporative coolers, RIEC and desiccant ...
María Jesús Romero-Lara   +2 more
doaj   +1 more source

Flow Distribution Characteristics of Supercritical Hydrocarbon Fuel in Parallel Channels with Pyrolysis

open access: yesXibei Gongye Daxue Xuebao, 2019
Due to the asymmetric geometry of flowpath and combustion organization, the heat flux distribution on RBCC's walls are extremely non-uniform. With a validated numerical model considering the changes of thermophysical properties and chemical components ...

doaj   +1 more source

Optimal battery thermal management for electric vehicles with battery degradation minimization [PDF]

open access: yesarXiv, 2023
The control of a battery thermal management system (BTMS) is essential for the thermal safety, energy efficiency, and durability of electric vehicles (EVs) in hot weather. To address the battery cooling optimization problem, this paper utilizes dynamic programming (DP) to develop an online rule-based control strategy.
arxiv  

Magnetic Actuation and Feedback Cooling of a Cavity Optomechanical Torque Sensor [PDF]

open access: yesNat. Commun. 8, 1355 (2017), 2017
We demonstrate the integration of a mesoscopic ferromagnetic needle with a cavity optomechanical torsional resonator, and its use for quantitative determination of the needle's magnetic properties, as well as amplification and cooling of the resonator motion.
arxiv   +1 more source

Experiments on Heat Transfer of Supercritical Pressure Kerosene in Mini Tube under Ultra-High Heat Fluxes

open access: yesEnergies, 2020
Heat transfer of supercritical-pressure kerosene is crucial for regenerative cooling systems in rocket engines. In this study, experiments were devoted to measure the heat transfer of supercritical-pressure kerosene under ultra-high heat fluxes.
Jianguo Yan   +3 more
doaj   +1 more source

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