Atomization characteristics and instabilities in the combustion of multi-component fuel droplets with high volatility differential

Abstract We delineate and examine the successive stages of ligament-mediated atomization of burning multi-component fuel droplets. Time-resolved high-speed imaging experiments are performed with fuel blends (butanol/Jet A-1 and ethanol/Jet A-1) comprising wide volatility differential, which undergo...

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Autores principales:	D. Chaitanya Kumar Rao, Srinibas Karmakar, Saptarshi Basu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/090ca2acb1b14c42badd424e669b11cf
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spelling	oai:doaj.org-article:090ca2acb1b14c42badd424e669b11cf2021-12-02T12:32:50ZAtomization characteristics and instabilities in the combustion of multi-component fuel droplets with high volatility differential10.1038/s41598-017-09663-72045-2322https://doaj.org/article/090ca2acb1b14c42badd424e669b11cf2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09663-7https://doaj.org/toc/2045-2322Abstract We delineate and examine the successive stages of ligament-mediated atomization of burning multi-component fuel droplets. Time-resolved high-speed imaging experiments are performed with fuel blends (butanol/Jet A-1 and ethanol/Jet A-1) comprising wide volatility differential, which undergo distinct modes of secondary atomization. Upon the breakup of vapor bubble, depending on the aspect ratio, ligaments grow and break into well-defined (size) droplets for each mode of atomization. The breakup modes either induce mild/intense oscillations on the droplet or completely disintegrate the droplet (micro-explosion). For the blends with a relatively low volatility difference between the components, only bubble expansion contributes to the micro-explosion. In contrast, for blends with high volatility differential, both bubble growth as well as the instability at the interface contribute towards droplet breakup. The wrinkling pattern at the vapor-liquid interface suggests that a Rayleigh-Taylor type of instability triggered at the interface further expedites the droplet breakup.D. Chaitanya Kumar RaoSrinibas KarmakarSaptarshi BasuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-15 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q D. Chaitanya Kumar Rao Srinibas Karmakar Saptarshi Basu Atomization characteristics and instabilities in the combustion of multi-component fuel droplets with high volatility differential
description	Abstract We delineate and examine the successive stages of ligament-mediated atomization of burning multi-component fuel droplets. Time-resolved high-speed imaging experiments are performed with fuel blends (butanol/Jet A-1 and ethanol/Jet A-1) comprising wide volatility differential, which undergo distinct modes of secondary atomization. Upon the breakup of vapor bubble, depending on the aspect ratio, ligaments grow and break into well-defined (size) droplets for each mode of atomization. The breakup modes either induce mild/intense oscillations on the droplet or completely disintegrate the droplet (micro-explosion). For the blends with a relatively low volatility difference between the components, only bubble expansion contributes to the micro-explosion. In contrast, for blends with high volatility differential, both bubble growth as well as the instability at the interface contribute towards droplet breakup. The wrinkling pattern at the vapor-liquid interface suggests that a Rayleigh-Taylor type of instability triggered at the interface further expedites the droplet breakup.
format	article
author	D. Chaitanya Kumar Rao Srinibas Karmakar Saptarshi Basu
author_facet	D. Chaitanya Kumar Rao Srinibas Karmakar Saptarshi Basu
author_sort	D. Chaitanya Kumar Rao
title	Atomization characteristics and instabilities in the combustion of multi-component fuel droplets with high volatility differential
title_short	Atomization characteristics and instabilities in the combustion of multi-component fuel droplets with high volatility differential
title_full	Atomization characteristics and instabilities in the combustion of multi-component fuel droplets with high volatility differential
title_fullStr	Atomization characteristics and instabilities in the combustion of multi-component fuel droplets with high volatility differential
title_full_unstemmed	Atomization characteristics and instabilities in the combustion of multi-component fuel droplets with high volatility differential
title_sort	atomization characteristics and instabilities in the combustion of multi-component fuel droplets with high volatility differential
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/090ca2acb1b14c42badd424e669b11cf
work_keys_str_mv	AT dchaitanyakumarrao atomizationcharacteristicsandinstabilitiesinthecombustionofmulticomponentfueldropletswithhighvolatilitydifferential AT srinibaskarmakar atomizationcharacteristicsandinstabilitiesinthecombustionofmulticomponentfueldropletswithhighvolatilitydifferential AT saptarshibasu atomizationcharacteristicsandinstabilitiesinthecombustionofmulticomponentfueldropletswithhighvolatilitydifferential
_version_	1718393899433590784

Atomization characteristics and instabilities in the combustion of multi-component fuel droplets with high volatility differential

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