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primary topic: Puffing/micro-explosion in composite fuel/water droplets heated in flames

Puffing/micro-explosion in composite fuel/water droplets heated in flames
type: AcademicArticle
type: Article
abstract: The results of new experimental and theoretical investigations of puffing and micro-explosion of rapeseed oil/water droplets placed in ethanol and propane/butane mixture flames are presented. It is pointed out that time to puffing/micro-explosion increases with increasing initial droplet radii in both flames. This time is always shorter for a propane/butane mixture flame (with maximal temperature 1,450 K) than for an ethanol flame (with maximal temperature 1,120 K). The experimental results are interpreted in terms of a simplified model of the phenomenon, in which it is assumed that a spherical water subdroplet is placed exactly in the centre of a spherical fuel droplet. The start of puffing/micro-explosion is linked with the time instant when the temperature at the water/rapeseed oil interface reaches the water nucleation temperature. The contributions of thermal radiation and supporting wire are taken into account for the first time for the analysis of the phenomena. It is shown that the model predictions agree with experimental data. © 2021 The Combustion Institute
date: 2021
volume: 233
is part of: Combustion and Flame
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository

Elsevier Inc.
type: Organization

Combustion and Flame
type: Collection
issn: 00102180

D.V. Antonov
type: Person
given name: D.V.
family name: Antonov

Z. Nissar
type: Person
given name: Z.
family name: Nissar

P.A. Strizhak
type: Person
given name: P.A.
family name: Strizhak

R.M. Fedorenko
type: Person
given name: R.M.
family name: Fedorenko

S.S. Sazhin
type: Person
given name: S.S.
family name: Sazhin

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primary topic: Puffing/micro-explosion in composite fuel/water droplets heated in flames