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Curran, James; Porter, Vincent; Richie, Donald; Jones, William; Schnitman, Jorge; Johnson, Russell; Michalczyk, John J.

doi:10.1080/10948008409488450

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“…The first one was developed in 2005 by Glaude 266 et al [9] . This sub-mechanism was added to a base mechanism 267 previously developed for DMM and DME [10,11] . The reaction rate 268 constants for reactions involving DMC were obtained by analo-269 gies based on the reaction rate constants for other oxygenated 270 compounds including dimethyl ether, formic acid, and methyl bu-271 tanoate.…”

Section: Mode Lingmentioning

confidence: 99%

“…Even though it is 100% miscible 6 with diesel fuel, it must be used as a blended fuel in diesel en- 7 gines due to its low cetane number (35)(36), low calorific value 8 (15.78 MJ/kg), and high latent heat of evaporation (369 kJ/kg) [2,3] . 9 To contribute to the development of detailed chemical kinetic 10 models to describe the combustion characteristics of DMC, a thor- 11 ough understanding of its combustion chemistry is needed. These 12 chemical kinetic models can be used in conjunction with compu-13 tational fluid dynamics (CFD) codes, with the necessary simplifi- 14 cations, to simulate the physical and chemical processes in en- 15 gines, leading to optimal engine efficiency with minimal emissions.…”

Section: Introductionmentioning

confidence: 99%

“…16 in the DMC flame, and the presence of oxygen on the central car- 23 bon in DMC favors breakage of the O-CO bond which results in 24 very low levels of formation of methane, ethane, ethylene, and 25 acetylene. Glaude et al [9] developed the first chemical kinetic 26 sub-mechanism for DMC conversion, which was incorporated into 27 a previously developed chemical kinetic mechanism for dimethoxy 28 methane (DMM) and dimethyl ether (DME) [10,11] . The predicted 29 composition profiles using this model were in reasonable agree-30 ment with the measured species profiles from Sinha and Thomson 31 [8] .…”

Section: Introductionmentioning

confidence: 99%

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An experimental and modeling study of the ignition of dimethyl carbonate in shock tubes and rapid compression machine

Alexandrino

Alzueta

Curran

2018

Combustion and Flame

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a b s t r a c tIgnition delay times of dimethyl carbonate DMC were measured using low-and high-pressure shock tubes and in a rapid compression machine (RCM). In this way, the effect of fuel concentration (0.75% and 1.75%), pressure (2.0, 20, and 40 atm) and equivalence ratio (0.5, 1.0, 2.0) on ignition delay times was studied experimentally and by model ing. Experiments cover the temperature range of (795-1585 K). Several models from literature were used to perform simulations, thus their performances to predict the present experimental data was examined. Furthermore, the effect of the thermodynamic data of the CH 3 O(C = O) Ȯ radical species and the fuel consumption reaction CH 3 O(C = O)OCH 3 CH 3 O(C = O) Ȯ + CH 3 , on the simulations of the ignition delay times of DMC was analyzed using the different models. Reaction path and sensitivity analyses were carried out with the final model to present an in-depth analysis of the oxidation of DMC under the different conditions studied. The final model used AramcoMech 2.0 as the base mechanism and included a DMC sub-mechanism available in literature to which the reaction CH 3 O(C = O)OCH 3 CH 3 O(C = O) Ȯ + CH 3 was modified. Good agreement is observed between calculated and experimental data. The model was also validated using available experimental data from flow reactors and opposed flow diffusion and laminar premixed flames studies showing an overall good performance. To this end, studies addressing the thermal decomposition [4-6] , 17 photolysis [7] and oxidation of DMC have been reported in the lit-18 erature. 19 Sinha and Thomson [8] measured species concentrations across 20 DMC/air and propane/DMC/air opposed flow diffusion flames.

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Section: Mode Lingmentioning

confidence: 99%