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Flames in dusty mixtures : Their structure and stability

Author
Jackson, T.
Published
Nov 1, 1993.
Physical Description
1 electronic document
Additional Creators
Buckmaster, J.
Online Version

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Unclassified, Unlimited, Publicly available.
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Summary
The structure and stability of flames in dusty mixtures is investigated. The presence of the dust leads to significant transport of energy by radiation and the fundamental goal of the analysis is to explore to what extent this displaces the classical non-hydrodynamical stability boundaries of the plane degradation. An approximate description of the radiative transport permits analysis for arbitrary values of both the planck length and the Boltzman number. It is shown that the pulsating/traveling-wave instability usually associated with values of Lewis number (L(sub e)) bigger than 1 is stongly enhanced by the presence of radiation and can be present even if L(sub e) is less than 1. On the other hand radiation tends to suppress the cellular instability normally associated with values of L(sub e) less than 1. The latter is consisitent with preliminary experimental observations of Abbud-Madrid and Ronney.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19940018616.
Accession ID: 94N23089.
ICASE-93-86.
NAS 1.26:191567.
NASA-CR-191567.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15660987