@MastersThesis{Araújo:1990:DeSp,
author = "Ara{\'u}jo, Thais Maia",
title = "Deflagra{\c{c}}{\~a}o de sprays",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "1990",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "1990-04-06",
keywords = "deflagra{\c{c}}{\~a}o, homog{\^e}nea, spray.",
abstract = "Nessa disserta{\c{c}}{\~a}o {\'e} realizada uma revis{\~a}o
das teorias de chama laminar, combust{\~a}o e
evapora{\c{c}}{\~a}o de gotas, e uma introdu{\c{c}}{\~a}o
{\`a} combust{\~a}o de sprays. {\'E} feita uma an{\'a}lise da
teoria de deflagra{\c{c}}{\~a}o de sprays monodis persos de
Williams. Aten{\c{c}}{\~a}o especial {\'e} dada ao
crit{\'e}rio para combust{\~a}o homog{\^e}nea de sprays, isto
{\'e}, o raio m{\'a}ximo r da gota para esse tipo de queima.
Mostra-se que essa teoria fornece uma varia{\c{c}}{\~a}o
incorreta do raio r com a temperatura de igni{\c{c}}{\~a}o. A
partir de novas hip{\'o}teses, deduz-se uma nova express{\~a}o
para essa varia{\c{c}}{\~a}o que evita esses problemas. Essa
nova equa{\c{c}}{\~a}o apresenta uma melhor concord{\^a}ncia
com os resultados experimentais. Analisa-se a regi{\~a}o da chama
usando a transforma{\c{c}}{\~a}o de Kirchhoff. ABSTRACT: This
dissertation presents a review of the laminar flame theory,
droplets evaporation and combustion, and an introduction to the
spray combustion. Furthermore, an analysis of the Williams'
monodisperse spray deflagration theory is presented. Special
attention is given to the criterion for spray homogeneous
combustion, that is, the maximum droplet radius for this kind of
spray burning. It is shown that this theory gives an incorrect
variation of the radius r with ignition temperature. Therefore, a
new expression for this variation is derived, based upon new
hypothesis which avoids these problema. This new equation shows a
better agreement with the experimental results. The flame region
is analysed by using Kirchhoff's transformation.",
committee = "Carvalho J{\'u}nior, Jo{\~a}o Andrade de (presidente) and
Travelho, Jer{\^o}nimo dos Santos (orientador) and Soviero, Paulo
Afonso de Oliveira and Sielawa, Jerzy Tadeusz and Gielow, Ralf",
copyholder = "SID/SCD",
englishtitle = "x",
language = "pt",
pages = "89",
ibi = "8JMKD3MGP3W34P/3Q2FEJL",
url = "http://urlib.net/ibi/8JMKD3MGP3W34P/3Q2FEJL",
targetfile = "publicacao.pdf",
urlaccessdate = "2024, Mar. 28"
}