A laser and molecular beam mass spectrometer study of low-pressure dimethyl ether flames

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Description

The oxidation of dimethyl ether (DME) is studied in low-pressure flames using new molecular beam mass spectrometer and laser diagnostics. Two 30.0-Torr, premixed DME/oxygen/argon flames are investigated with stoichiometries of 0.98 and 1.20. The height above burner profiles of nine stable species and two radicals are measured. These results are compared to the detailed chemical reaction mechanism of Curran and coworkers. Generally good agreement is found between the model and data. The largest discrepancies are found for the methyl radical profiles where the model predicts qualitatively different trends in the methyl concentration with stoichiometry than observed in the experiment.

Physical Description

25 p.

Creation Information

McIlroy, Andrew; Hain, Toby D.; Michelsen, Hope A. & Cool, Terrill A. December 15, 2000.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 19 times . More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

The oxidation of dimethyl ether (DME) is studied in low-pressure flames using new molecular beam mass spectrometer and laser diagnostics. Two 30.0-Torr, premixed DME/oxygen/argon flames are investigated with stoichiometries of 0.98 and 1.20. The height above burner profiles of nine stable species and two radicals are measured. These results are compared to the detailed chemical reaction mechanism of Curran and coworkers. Generally good agreement is found between the model and data. The largest discrepancies are found for the methyl radical profiles where the model predicts qualitatively different trends in the methyl concentration with stoichiometry than observed in the experiment.

Physical Description

25 p.

Notes

OSTI as DE00751236

Medium: P; Size: 25 pages

Source

  • 28th Annual Combustion Conference, Edinburgh, Scotland (GB), 07/31/2000--08/04/2000

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  • Report No.: SAND2000-8493C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 751236
  • Archival Resource Key: ark:/67531/metadc706290

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Creation Date

  • December 15, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 10, 2017, 6:07 p.m.

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McIlroy, Andrew; Hain, Toby D.; Michelsen, Hope A. & Cool, Terrill A. A laser and molecular beam mass spectrometer study of low-pressure dimethyl ether flames, article, December 15, 2000; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc706290/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.