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Erschienen in:
Introduction to Fluid Mechanics Kapitel lesen Erstes Kapitel lesen

2016 | OriginalPaper | Buchkapitel

11. Diffusion Flames

verfasst von : Ali S. Rangwala

Erschienen in: SFPE Handbook of Fire Protection Engineering

Verlag: Springer New York

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Abstract

Fires involve reactants, usually fuel and air, not intimately mixed at a molecular level before combustion. Usually, the fuel is in the solid or liquid state so transfer of material across a phase boundary (phase change) must also occur. The vaporized fuel must combine with oxygen from air to form a flammable mixture, which when ignited forms the flame zone. In most fire problems, this mixing of fuel vapor and oxygen takes place mostly by diffusion and takes orders of magnitude longer time compared with that of a chemical reaction. Therefore, diffusion of species is the primary controlling process during such burning behavior. A fundamental understanding of diffusion flames then involves exploring the mechanisms associated with the transport of the reactants and the resulting flame structure.

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Vorheriges Kapitel Chemical Kinetics and Fire
Nächstes Kapitel Fundamentals of Premixed Flames
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Metadaten
Titel
Diffusion Flames
verfasst von
Ali S. Rangwala
Copyright-Jahr
2016
Verlag
Springer New York
Buch
SFPE Handbook of Fire Protection Engineering

Print ISBN: 978-1-4939-2564-3

Electronic ISBN: 978-1-4939-2565-0

Copyright-Jahr: 2016

DOI
https://doi.org/10.1007/978-1-4939-2565-0_11