Multiphysics CFD modeling of a free falling jet during melt-blowing slag fiberization

Gerogiorgis, DI; Panias, D; Paspaliaris, I

dc.contributor.author	Gerogiorgis, DI	en
dc.contributor.author	Panias, D	en
dc.contributor.author	Paspaliaris, I	en
dc.date.accessioned	2014-03-01T02:53:56Z
dc.date.available	2014-03-01T02:53:56Z
dc.date.issued	2012	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36489
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84860818096&partnerID=40&md5=96bc24bc260463c4ed6e9deb25fcc788	en
dc.subject	Computational fluid dynamics (CFD)	en
dc.subject	Fiberization	en
dc.subject	Mineral wool, slag	en
dc.subject	Red mud	en
dc.subject.other	CFD modeling	en
dc.subject.other	Droplet generation	en
dc.subject.other	Environmental pressures	en
dc.subject.other	External cooling	en
dc.subject.other	Fiber elongation	en
dc.subject.other	Fiberization	en
dc.subject.other	High fidelity	en
dc.subject.other	High temperature	en
dc.subject.other	High velocity	en
dc.subject.other	Impinging air jet	en
dc.subject.other	Jet flow	en
dc.subject.other	Manipulated variables	en
dc.subject.other	Melt blowing	en
dc.subject.other	Molten Slag	en
dc.subject.other	Multi-physics	en
dc.subject.other	Physicochemical phenomena	en
dc.subject.other	Radiative cooling	en
dc.subject.other	Red mud	en
dc.subject.other	Temperature dependent	en
dc.subject.other	Computational fluid dynamics	en
dc.subject.other	Computer simulation	en
dc.subject.other	Exhibitions	en
dc.subject.other	Jets	en
dc.subject.other	Laminar flow	en
dc.subject.other	Mineral wool	en
dc.subject.other	Optimization	en
dc.subject.other	Slags	en
dc.subject.other	Transport properties	en
dc.subject.other	Fibers	en
dc.title	Multiphysics CFD modeling of a free falling jet during melt-blowing slag fiberization	en
heal.type	conferenceItem	en
heal.publicationDate	2012	en
heal.abstract	Red mud fiberization is a process with remarkable potential, alleviating environmental pressure by transforming an aluminum by-product into mineral wool, thus to various marketable products. A promising mineral wool process is molten slag fiberization via an impinging air jet, which avoids mechanical wear and rotating parts. The molten slag which remains after pig iron casting flows out of a heated ladle orifice at a high temperature (1600°C) and adjustable flowrate, and forms a free-falling vertical jet which visibly radiates its excessive heat: at a given distance, a high-velocity impinging air jet meets the vertical melt jet perpendicularly (or at an angle), inducing intensive droplet generation, subsequent fiber elongation, collection and processing. This paper focuses on high-fidelity CFD modeling of the molten jet flow under external cooling: the model encompasses all physicochemical phenomena (melt laminar flow, radiative cooling) and considers several temperature-dependent slag transport properties in order to understand which operational degrees of freedom (manipulated variables) are useful to process optimization.	en
heal.journalName	TMS Annual Meeting	en
dc.identifier.spage	81	en
dc.identifier.epage	88	en