A study of a single droplet impinging onto a sloped surface: Jet-Fuel and Biofuel mixtures

Ferrão, Inês; Barata, Jorge M M; Silva, A. R. R.

Publication

A study of a single droplet impinging onto a sloped surface: Jet-Fuel and Biofuel mixtures

2019-09-02Conference object

dc.contributor.author	Ferrão, Inês
dc.contributor.author	Barata, Jorge M M
dc.contributor.author	Silva, A. R. R.
dc.date.accessioned	2020-01-10T14:33:47Z
dc.date.available	2020-01-10T14:33:47Z
dc.date.issued	2019-09-02
dc.description.abstract	The present study experimentally investigated droplets impinging on a sloped aluminum surface. In these experiments, the droplet is spherical throughout the trajectory where the gravitational acceleration and movement of the droplet have the same direction, which leads to unique phenomena. Considering an oblique impact, the droplet collides with a certain angle, and the impact velocity is composed of normal and tangential components to the surface that vary with the impact height. Four fluids were tested: 100% Jet-Fuel, 75% Jet-Fuel/ 25% HVO, 50% Jet-Fuel/ 50% HVO and H2O (pure water) as a reference. The mixtures were a combination of a conventional Jet Fuel (Jet A-1) and a biofuel (HVO – Hydroprocessed Vegetable Oil), more specifically NExBTL. When a droplet impacts onto an inclined surface, its shape is distorted and it can spread or splash asymmetrically relatively to the point of impact, affecting the advancing and receding contact angle. Therefore, several geometric parameters were measured and compared for the different fluids and incident angles. The incident angles influence the spreading velocity on the upper and lower side. The spreading velocity was analyzed, allowing a better understanding of the dynamic behavior of each side. The spread factor, which corresponds to the distance between the lower and upper edges normalized by the initial droplet diameter, was compared to the Weber number (We) which is a proper indicator for the drop deformation. The variation of incident angles and impact velocity promotes a different droplet movement and asymmetry in phenomena that are also evidently influenced by the gravity role.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Inês Ferrão, Jorge Barata and André Silva, “A study of a single droplet impinging onto a sloped surface: Jet-Fuel and Biofuel mixtures”, ILASS 2019 - 29th European Conference on Liquid Atomization and Spray Systems, Paris, France, 2-4 Sep, 2019	pt_PT
dc.identifier.other	sciencesconf.org:ilass19:245065
dc.identifier.uri	http://hdl.handle.net/10400.6/8206
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.relation	Associate Laboratory of Energy, Transports and Aeronautics
dc.relation.publisherversion	https://ilass19.sciencesconf.org/245065/document	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Droplet impingement	pt_PT
dc.subject	Oblique impact	pt_PT
dc.subject	Jet-Fuel	pt_PT
dc.subject	Biofuel	pt_PT
dc.title	A study of a single droplet impinging onto a sloped surface: Jet-Fuel and Biofuel mixtures	pt_PT
dc.type	conference object
dspace.entity.type	Publication
oaire.awardTitle	Associate Laboratory of Energy, Transports and Aeronautics
oaire.awardURI	info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FEMS%2F50022%2F2019/PT
oaire.citation.conferencePlace	Paris, França	pt_PT
oaire.citation.title	ILASS 2019 - 29th European Conference on Liquid Atomization and Spray Systems	pt_PT
oaire.fundingStream	6817 - DCRRNI ID
person.familyName	Ferrão
person.familyName	Martins Barata
person.familyName	Resende Rodrigues da Silva
person.givenName	Inês
person.givenName	Jorge Manuel
person.givenName	André
person.identifier	hFY_5JYAAAAJ&hl
person.identifier	J-4185-2012
person.identifier.ciencia-id	BE10-CCE6-C327
person.identifier.ciencia-id	F611-BBCC-DAA8
person.identifier.ciencia-id	8219-4B2B-E1C7
person.identifier.orcid	0000-0003-4391-8930
person.identifier.orcid	0000-0001-9014-5008
person.identifier.orcid	0000-0002-4901-7140
person.identifier.scopus-author-id	11439470600
person.identifier.scopus-author-id	11440407500
project.funder.identifier	http://doi.org/10.13039/501100001871
project.funder.name	Fundação para a Ciência e a Tecnologia
rcaap.rights	openAccess	pt_PT
rcaap.type	conferenceObject	pt_PT
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