Wide range modeling study of dimethyl ether oxidation

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A detailed chemical kinetic model has been used to study dimethyl ether (DME) oxidation over a wide range of conditions. Experimental results obtained in a jet-stirred reactor (JSR) at I and 10 atm, 0.2 < 0 < 2.5, and 800 < T < 1300 K were modeled, in addition to those generated in a shock tube at 13 and 40 bar, 0 = 1.0 and 650 :5 T :5 1300 K. The JSR results are particularly valuable as they include concentration profiles of reactants, intermediates and products pertinent to the oxidation of DME. These data test the Idnetic model severely, ... continued below

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23 p.; Other: FDE: PDF; PL:

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Pitz, W.J.; Marinov, N.M.; Westbrook, C.K.; Dagaut, P.; Boettner, J-C & Cathonnet, M. April 1, 1997.

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Description

A detailed chemical kinetic model has been used to study dimethyl ether (DME) oxidation over a wide range of conditions. Experimental results obtained in a jet-stirred reactor (JSR) at I and 10 atm, 0.2 < 0 < 2.5, and 800 < T < 1300 K were modeled, in addition to those generated in a shock tube at 13 and 40 bar, 0 = 1.0 and 650 :5 T :5 1300 K. The JSR results are particularly valuable as they include concentration profiles of reactants, intermediates and products pertinent to the oxidation of DME. These data test the Idnetic model severely, as it must be able to predict the correct distribution and concentrations of intermediate and final products formed in the oxidation process. Additionally, the shock tube results are very useful, as they were taken at low temperatures and at high pressures, and thus undergo negative temperature dependence (NTC) behavior. This behavior is characteristic of the oxidation of saturated hydrocarbon fuels, (e.g. the primary reference fuels, n-heptane and iso- octane) under similar conditions. The numerical model consists of 78 chemical species and 336 chemical reactions. The thermodynamic properties of unknown species pertaining to DME oxidation were calculated using THERM.

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23 p.; Other: FDE: PDF; PL:

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OSTI as DE98050915

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  • Western State section of the Combustion Institute meeting, Livermore, CA (United States), 14-15 Apr 1997

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  • Other: DE98050915
  • Report No.: UCRL-JC--127071
  • Report No.: CONF-970495--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 302173
  • Archival Resource Key: ark:/67531/metadc685617

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • April 1, 1997

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  • July 25, 2015, 2:20 a.m.

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  • Feb. 18, 2016, 11:24 a.m.

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Pitz, W.J.; Marinov, N.M.; Westbrook, C.K.; Dagaut, P.; Boettner, J-C & Cathonnet, M. Wide range modeling study of dimethyl ether oxidation, article, April 1, 1997; California. (digital.library.unt.edu/ark:/67531/metadc685617/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.