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Study on hybrid combustion of aero-suspensions of boron-aluminum powders in a quiescent reaction medium

Afzalabadi, Abolfazl; Poorfar, Alireza Khoeini; Bidabadi, Mehdi; Moghadasi, Hesam; Hochgreb, Simone; Rahbari, Alireza; Dubois, Charles

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The present research deals with a hybrid combustion of aluminum/boron dust particles in a heterogeneous quiescent reaction medium with spatially discrete heat sources. A developed thermal model is employed to estimate flame propagation speed in a reaction medium. The burning velocity and minimum ignition energy are studied parametrically as a function of dust concentration and particle diameter for different percentages of boron powder in a hybrid mixture of aluminum/boron dust cloud. The model...[Show more]

dc.contributor.authorAfzalabadi, Abolfazl
dc.contributor.authorPoorfar, Alireza Khoeini
dc.contributor.authorBidabadi, Mehdi
dc.contributor.authorMoghadasi, Hesam
dc.contributor.authorHochgreb, Simone
dc.contributor.authorRahbari, Alireza
dc.contributor.authorDubois, Charles
dc.date.accessioned2018-01-18T00:58:05Z
dc.identifier.issn0950-4230
dc.identifier.urihttp://hdl.handle.net/1885/139437
dc.description.abstractThe present research deals with a hybrid combustion of aluminum/boron dust particles in a heterogeneous quiescent reaction medium with spatially discrete heat sources. A developed thermal model is employed to estimate flame propagation speed in a reaction medium. The burning velocity and minimum ignition energy are studied parametrically as a function of dust concentration and particle diameter for different percentages of boron powder in a hybrid mixture of aluminum/boron dust cloud. The model shows that the addition of boron powder as a component of the mixture decreases the burning rate and causes a higher amount of minimum ignition energy needed for ignition, owing to the role of boron as a heat sink. Comparison of the simulation results with the available experimental data shows that the model captures the flame propagation speed as a function of particle concentration, except at very low concentrations.
dc.format.mimetypeapplication/pdf
dc.publisherElsevier
dc.rights© 2017 Elsevier Ltd.
dc.sourceJournal of Loss Prevention in the Process Industries
dc.subjectHybrid combustion
dc.subjectHeterogeneous combustion
dc.subjectBoron-aluminum powders
dc.subjectMetals ignition
dc.titleStudy on hybrid combustion of aero-suspensions of boron-aluminum powders in a quiescent reaction medium
dc.typeJournal article
local.identifier.citationvolume49
dc.date.issued2017
local.publisher.urlhttps://www.elsevier.com/
local.type.statusAccepted Version
local.contributor.affiliationRahbari, A., Research School of Engineering, The Australian National University
local.bibliographicCitation.startpage645
local.bibliographicCitation.lastpage651
local.identifier.doi10.1016/j.jlp.2017.08.012
dcterms.accessRightsOpen Access
dc.provenancehttp://www.sherpa.ac.uk/romeo/issn/0950-4230/..."Author's post-print on open access repository after an embargo period of between 12 months and 48 months" from SHERPA/RoMEO site (as at 18/01/18).
CollectionsANU Research Publications

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