Results 31 to 40 of about 925,504 (345)
Авіаційно-космічна техніка та технологіяOscillations in engine thrust are due to nonstationary dynamic processes in the combustion chamber. The presence of vortexes in the combustion product flow in the combustion chamber can lead to liquid rocket engine (LRE) dynamic instability with a ...
Іnnа Bashlii +2 more
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Pulsed instabilities in combustion chambers [PDF]
31st Joint Propulsion Conference and Exhibit, 1995 A pulsed or "triggered" instability occurs when pressure oscillations develop in a linearly stable combustion system after being subjected to a sufficiently large disturbance. Such true nonlinear instabilities usually occur as subcritical bifurcations in dynamical systems theory.
G. Swenson +2 more
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Advanced Engineering Materials, EarlyView.This study explores combining two existing aerospace titanium alloy powders, processing them via field‐assisted sintering technology and the subsequent discovery of a novel alloy composition, termed S23, with ultra‐high tensile toughness. Fine‐scale alpha precipitates favorably form in the alloy despite the relatively slow cooling, providing an ...
Samuel Lister +2 more
wiley +1 more source
Shanghai Jiaotong Daxue xuebaoBased on the principle of the rich-burn/quench/lean-burn (RQL) technology, a low emission combustion chamber for gas turbine was designed. The effects of different heights of quenching structure and distribution ratios of the air flow on the flow field ...
HUI Lei, LIU Aiguo, WU Xiaoqu, ZHANG Yunjie, ZENG Wen
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Advanced Functional Materials, EarlyView.By using (meso)porous N‐doped carbon nanospheres with tailored intraparticle porosity and constant particle size as conductive carbon in PVMPT‐based organic battery electrodes, the complete volume of the carbon is accessible for the immobilization of PVMPT, resulting in high accessible specific capacities while maintaining a good rate capability and ...
Niklas Ortlieb +6 more
wiley +1 more source
Simulation of Combustion Air Flow in the Gasification Biomass Boiler
MATEC Web of Conferences, 2018 The article deals with the optimization of biomass combustion in a small heat source by means of an optimal distribution of combustion air. The uneven distribution of combustion air has been observed in certification tests and in real operation of used ...
Patsch Marek, Pilát Peter
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Stability Investigation of Combustion Chambers with LES [PDF]
, 2012 Our primary energy consumption is supported in 81% by the combustion of fossil energy commodities (IEA, 2010). The demand on energy will grow by about 60% in the near future (Shell, 2008). The efficiency of the combustion processes is crucial for the environment and for the use of the remaining resources.
Pritz, Balázs, Gabi, Martin
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Atomic Size Misfit for Electrocatalytic Small Molecule Activation
Advanced Functional Materials, EarlyView.This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong +3 more
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Rekayasa Mesin, 2022 The utilization of briquettes as a source of electricity generation is still low due to the briquette characteristics that have high moisture content.
Erlanda A Pane +3 more
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Advanced Functional Materials, EarlyView.Multifunctional atomic layer deposited coatings and interface treatments enhance direct solar water splitting on GaAs/GaInP tandem cells. Optimized TiO2/Pt nanoparticle bilayers ensure durability and catalytic efficiency with minimal optical losses, while H2 plasma pretreatments maximize photovoltage and interfacial charge extraction.
Tim F. Rieth +8 more
wiley +1 more source