Chemical kinetic modeling of diethoxymethane oxidation: A carbon–neutral fuel
نویسندگان
چکیده
Abstract Diethoxymethane (DEM) is a carbon–neutral fuel with high cetane number (57.3). A detailed chemical kinetic mechanism for DEM oxidation covering low and temperature reactions first developed in this work. The reaction scheme rate rules of sub-mechanism are determined by the analogy method to n-heptane. Aramco 3.0 used as base consider C0-C4 fuels while dimethoxymethane included ensure compatibility rule consistency. Thermodynamic transport properties new species computed methods group additivity correlation. validated against ignition delay times premixed laminar flame speed measured shock tube, rapid compression machine spherical combustion vessel. verification covers pressure range 2~30 bar, an equivalence ratio 0.5~2.0, 540~1371 K. satisfactory agreement between experimental results observed, supporting proposed rules. Comparison n-heptane indicates: (i) more reactive at (500~670 K) than which favors mode. (ii) demonstrate monotonous dependence full regime but it relatively independent intermediate (620~960 K). Therefore, negative coefficient (NTC) behavior not observed most conditions. (iii) may be efficient source compared due insufficient increases active radical accumulation.
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ژورنال
عنوان ژورنال: Fuel
سال: 2021
ISSN: ['0016-2361', '1873-7153']
DOI: https://doi.org/10.1016/j.fuel.2021.120217