An active particle diffusion theory of flame quenching for laminar flames / Dorothy M. Simon and Frank E. Belles

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An equation for quenching distance based on the destruction of chain carriers by the surface is derived. The equation expresses the quenching distance in terms of the diffusion coefficients and partial pressures of the chain carriers and gas phase molecules, the efficiency of the surface as a chain breaker, the total pressure of the mixture, and a constant which depends on the geometry of the quenching surface. Quenching distances measured by flashback for propane-air flames are shown to be consistent with the mechanism. The derived equation is used with the lean inflammability limit and a rate constant calculated from burning ... continued below

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Simon, Dorothy M & Belles, Frank E March 4, 1952.

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This report is part of the collection entitled: National Advisory Committee for Aeronautics Collection and one other and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 360 times , with 4 in the last month . More information about this report can be viewed below.

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  • Main Title: An active particle diffusion theory of flame quenching for laminar flames / Dorothy M. Simon and Frank E. Belles
  • Series Title: NACA Research Memorandums

Description

An equation for quenching distance based on the destruction of chain carriers by the surface is derived. The equation expresses the quenching distance in terms of the diffusion coefficients and partial pressures of the chain carriers and gas phase molecules, the efficiency of the surface as a chain breaker, the total pressure of the mixture, and a constant which depends on the geometry of the quenching surface. Quenching distances measured by flashback for propane-air flames are shown to be consistent with the mechanism. The derived equation is used with the lean inflammability limit and a rate constant calculated from burning velocity data to estimate quenching distances for propane-air (hydrocarbon lean) flames satisfactorily.

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  • : 93R16213
  • URL: http://hdl.handle.net/2060/19930086923 External Link
  • Report No.: NACA-RM-E51L18
  • Center for AeroSpace Information Number: 19930086923
  • Archival Resource Key: ark:/67531/metadc59077

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National Advisory Committee for Aeronautics Collection

The National Advisory Committee for Aeronautics (NACA) was a U.S. federal agency founded on March 3, 1915 to undertake, promote, and institutionalize aeronautical research. On October 1, 1958 the agency was dissolved, and its assets and personnel transferred to the newly created National Aeronautics and Space Administration (NASA).

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  • March 4, 1952

Added to The UNT Digital Library

  • Nov. 17, 2011, 10:13 p.m.

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  • Jan. 27, 2017, 2:36 p.m.

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Simon, Dorothy M & Belles, Frank E. An active particle diffusion theory of flame quenching for laminar flames / Dorothy M. Simon and Frank E. Belles, report, March 4, 1952; (digital.library.unt.edu/ark:/67531/metadc59077/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.