rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Laminar Flame Speed Measurments of Synthetic Gas Blends with Hydrocarbon Impurities
  name:
    name part: Keesee, Charles Lewis
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: Petersen, Eric L.
    role:
      role term: thesis advisor.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2015
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: New laminar flame speed measurements have been taken for a wide range of synthetic gas, or syngas, mixtures. These experiments began with two baseline mixtures. The first of these baseline mixtures was a bio-syngas surrogate with a 50/50 H₂/CO split, and the second baseline mixture was a coal syngas blend with a 40/60 H₂/CO split. Experiments were conducted over a range of equivalence ratios from [phi] = 0.5 to 3 at initial conditions of 1 atm and 296 K. Upon completion of the baseline experiments, two different hydrocarbons were added to the fuel mixtures at levels ranging from 0.8 to 15% by volume, keeping the H₂/CO ratio locked for the bio-syngas and coal syngas mixtures. The addition of these light hydrocarbons, namely CH₄ and C₂H₆, had been shown in a previous numerical study to have significant impacts on the laminar flame speed, and the present experiments validated the suspected trends. For example, a 7% addition of methane to the coal-syngas blend decreased the peak flame speed by about 25% and shifted it from [phi] = 2.2 to a leaner value near [phi] = 1.5. Also, the addition of ethane at 1.7% reduced the mixture flame speed more than a similar addition of methane (1.6%). Images taken during the experiments show the addition of hydrocarbons increasing the stability of the flame. The analysis also looked at the effects of hydrocarbon addition on the Markstein lengths and Lewis numbers of the mixtures. Markstein lengths were relatively consistent throughout all mixtures investigated. The Lewis numbers were found to move closer to unity for both lean and rich mixtures as hydrocarbons were added. Compared to the experimental results the model predicts the shape of the flame speed curve and places the peak at the correct equivalence ratio. However the model predicts a slower flame speed when hydrocarbons are added. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/155067
  note: by Charles Lewis Keesee.
  note: "Major Subject: Mechanical Engineering"
  note: Includes vita.
  note: Master of Science Texas A & M University 2015 http://hdl.handle.net/1969.1/155067
  note: Includes bibliographical references.
  note: Text (Thesis)
  subject:
    topic: Major Mechanical Engineering
  subject:
    topic: Laminar Flame Speed
  identifier: http://hdl.handle.net/1969.1/155067
  record info:
    record content source: TXA
    record creation date: 160303
    record change date: 20170928112053.0
    record identifier: in00003609512
    language of cataloging:
      language term: eng