Diffusion-controlled combustion

Liñán Martínez, Amable (2001). Diffusion-controlled combustion. In: "20th International Congress on Theoretical and Applied Mechanics", 27 Ago - 2 Sep 2000, Chicago. ISBN 978-0-7923-7156-4.


Title: Diffusion-controlled combustion
  • Liñán Martínez, Amable
Item Type: Presentation at Congress or Conference (Article)
Event Title: 20th International Congress on Theoretical and Applied Mechanics
Event Dates: 27 Ago - 2 Sep 2000
Event Location: Chicago
Title of Book: New Trends in Continuum Mechanics
Date: 2001
ISBN: 978-0-7923-7156-4
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Motopropulsión y Termofluidodinámica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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We devote this brief review to some relevant aspects of diffusion-controlled combustion. After a survey of the conservation equations involved, we shall describe the Burke-Schumann limit, which is applicable when the reaction time at the flame is very short compared with the mixing time. Using as a protopypical example the How downstream from a fuel injector in a combustor chamber, we next introduce some phenomena related to finite-rate kinetics. We shall see how the high temperature sensitivity typical of combustion reactions is responsible for the presence near the injector of chemically frozen regions of low temperature where the reactants mix without chemical reaction, these regions being separated by thin premixed flames, with rich and lean branches, from regions of near equilibrium flow, where the reactants coexist only in a thin trailing diffusion flame. The role of these triple llames in the ignition, anchoring, and lift-off processes of diffusion flames will be briefly discussed.

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Item ID: 1535
DC Identifier: http://oa.upm.es/1535/
OAI Identifier: oai:oa.upm.es:1535
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 21 Apr 2009
Last Modified: 20 Apr 2016 06:52
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