Results 261 to 270 of about 121,913 (303)

Homogeneous-Dilution Model of Partially-Fueled Pulse Detonation Engines

42nd AIAA Aerospace Sciences Meeting and Exhibit, 2004
A model requiring no empirical parameter for estimating the propulsive performances of a partially-fueled (P-F) pulse detonation engine (PDE) was proposed. The model was developed based on a hypothesis that every performance parameters obtained by integrating phenomena in one cycle are predominantly determined by energetics only.
Takuma Endo, Tomoaki Yatsufusa, Shiro Taki, Jiro Kasahara, Akiko Matsuo, Shigeru Sato, Toshi Fujiwara   +6 more
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Modeling of a dilute vaporizing multicomponent fuel spray

International Journal of Heat and Mass Transfer, 1987
Abstract A simplified spray environment is used to represent the multicomponent nature of liquid fuels and to examine the sensitivity of their vaporization behavior to the various liquid- and gas-phase models. Liquid-phase models are the diffusion limit, the infinite diffusion, and the vortex.
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Autoignition of Dilute Fuel Sprays Including Detailed Chemistry

SAE Technical Paper Series, 1992
<div class="htmlview paragraph">Autoignition of fuel sprays is of special relevance to compression-ignition engines. The high air temperature in diesel engines leads to heating, vaporization and autoignition of the injected fuel spray; typically part of the liquid fuel vaporizes before ignition occurs so that by the time the mixture autoignites ...
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Inherent isotope dilution analysis of237Np in spent nuclear fuels

Journal of Radioanalytical and Nuclear Chemistry Letters, 1987
A combined γ-spectrometric and mass-spectrometric determination of237Np in spent nuclear fuels using239Np as an inherent spike has been developed. In spent fuel239Np is in radiochemical equilibrium with243Am. Neptunium in the tetravalent state is separated by TTA solvent extraction from the other actinides and most of the fission products and the γ ...
T. Adachi, K. Kammerichs, L. Koch
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WINTER TESTS SHOW GREATER DILUTION WITH HEAVY FUELS

SAE Technical Paper Series, 1924
<div class="htmlview paragraph">Because the analyses of many samples of new and of diluted crankcase oil had not been completed by the Bureau of Standards when the results of the winter tests were reported at the 1923 Semi-Annual Meeting, the report on these dilution data was delayed.
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On Diluted-Fuel Combustion Issues in Burning Biogas Surrogates

Journal of Energy Resources Technology, 2009
This paper describes an analysis of the burning velocity of pure and diluted fuels, with implications for the development and operation of biogas-fueled combustors. Background work in the area of flame stabilization and propagation are introduced from the combustion literature.
David A. Wilson, Kevin M. Lyons
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Experimental results from a 5kW PEM fuel cell stack operated on simulated reformate from highly diluted hydrocarbon fuels: Efficiency, dilution, fuel utilisation, CO poisoning and design criteria

International Journal of Hydrogen Energy, 2009
The present article analyses the effects of dilute biogas on efficiency, fuel utilisation, dynamics, control strategy, and design criteria for a polymer electrolyte fuel cell (PEFC) system. The tested fuel compositions are exemplified by gas compositions that could be attained within various Swedish biofuel demonstration projects.
L HEDSTROM, T TINGELOF, P ALVFORS, G LINDBERGH   +3 more
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Effect of Fuels and Dilution Ratio on Diesel Particulate Emissions

SAE Technical Paper Series, 1979
<div class="htmlview paragraph">An experimental investigation of the effect of fuel variables and exhaust dilution on diesel particulate emissions from a Caterpillar 3208 direct injection naturally aspirated engine is presented. Three test fuels with widely varying gravity, volatility, aromatic and sulfur content were used.
Larry E. Frisch, John H. Johnson, David G. Leddy   +2 more
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Experimental study of air dilution in oxy-liquid fuel flames

Proceedings of the Combustion Institute, 2005
The influence of oxidizer dilution in oxy-liquid ethanol flames is experimentally investigated by using a coaxial air-assisted injector positioned in a vertical combustion chamber. This study accounts for the influence of a two-phase mode since two different injector geometries are used: for the first configuration, a vaporization mode is observed at ...
Lacas, François, Leroux, Bertrand, Darabiha, Nasser   +2 more
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Dilution of Atmospheric Radiocarbon CO2 by Fossil Fuel Emissions

SSRN Electronic Journal, 2016
Post bomb period data for 14C in atmospheric carbon dioxide from seven measurement stations are available in small samples up to and including the year 2007. They do not support the theory that dilution by 14C-free fossil fuel emissions is responsible for falling levels of 14C in atmospheric CO2.
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