The dynamics of combustion fronts in porous media

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Description

In this report, a method for solving this problem by treating the reaction region as a place of discontinuities in the appropriate variables, which include, for example, fluxes of heat and mass was proposed. Using a rigorous perturbation approach, similar to that used in the propagation of flames and smoldering combustion, appropriate jump conditions that relate the change in these variables across the front was derived. These conditions account for the kinetics of the reaction between the oxidant and the fuel, the changes in the morphology of the pore space and the heat and mass transfer in the reaction zone. ... continued below

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31 pages

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Akkutlu, I. Yucel & Yortsos, Yannis C. June 15, 2000.

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Description

In this report, a method for solving this problem by treating the reaction region as a place of discontinuities in the appropriate variables, which include, for example, fluxes of heat and mass was proposed. Using a rigorous perturbation approach, similar to that used in the propagation of flames and smoldering combustion, appropriate jump conditions that relate the change in these variables across the front was derived. These conditions account for the kinetics of the reaction between the oxidant and the fuel, the changes in the morphology of the pore space and the heat and mass transfer in the reaction zone. The modeling of the problem reduces to the modeling of the dynamics of a combustion front, on the regions of either side of which transport of momentum (fluids), heat and mass, but not chemical reactions, must be considered. Properties of the two regions are coupled using the derived jump conditions. This methodology allows one to explicitly incorporate permeability heterogeneity effects in the process description, without the undue complexity of the coupled chemical reactions.

Physical Description

31 pages

Notes

OSTI as DE00756596

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  • Other Information: PBD: 15 Jun 2000

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  • Report No.: DOE/BC/15211-6
  • Grant Number: AC26-99BC15211
  • DOI: 10.2172/756596 | External Link
  • Office of Scientific & Technical Information Report Number: 756596
  • Archival Resource Key: ark:/67531/metadc705966

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Creation Date

  • June 15, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 8, 2016, 4:43 p.m.

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Akkutlu, I. Yucel & Yortsos, Yannis C. The dynamics of combustion fronts in porous media, report, June 15, 2000; Tulsa, Oklahoma. (digital.library.unt.edu/ark:/67531/metadc705966/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.