Numerical and optical soot characterization through 2-color pyrometry technique for an innovative diesel piston bowl design

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dc.contributor.author	Piano, A.	es_ES
dc.contributor.author	Roggio, S.	es_ES
dc.contributor.author	Millo, F.	es_ES
dc.contributor.author	García Martínez, Antonio	es_ES
dc.contributor.author	Micó, Carlos	es_ES
dc.contributor.author	De Vargas Lewiski, Felipe	es_ES
dc.contributor.author	Pesce, F. C.	es_ES
dc.contributor.author	Vassallo, A.	es_ES
dc.contributor.author	Bianco, A.	es_ES
dc.date.accessioned	2024-11-20T19:10:12Z
dc.date.available	2024-11-20T19:10:12Z
dc.date.issued	2023-02-01	es_ES
dc.identifier.issn	0016-2361	es_ES
dc.identifier.uri	http://hdl.handle.net/10251/212071
dc.description.abstract	[EN] The development of innovative diesel piston bowl designs has shown significant improvement of the near-wall flame evolution, resulting in lower fuel consumption and engine-out soot emissions. With this aim, a novel hybrid piston bowl for a 1.6 L light-duty diesel engine was designed, coupling a sharp-stepped bowl and radial-bumps in the inner bowl rim. The effects of the proposed hybrid bowl were analysed through both single-cylinder optical engine and 3D-CFD models, which feature a detailed chemical kinetic mechanism and the Particulate Mimic (PM) soot model. The 2-color pyrometry optical technique was adopted to obtain the optical soot density (KL) and the temperature of the soot surface. Then, a line-of-sight integration of the numerical soot distribution was adopted to obtain a planar KL distribution, which is directly comparable with the experimental KL images. The results showed a good agreement in terms of soot distribution between 3D-CFD and experiments, confirming the high prediction capabilities of the developed numerical methodology. The synergetic application of numerical and optical techniques highlighted that the hybrid bowl strongly mitigates the flame-to-flame interaction with respect to a conventional re-entrant bowl, leading to lower soot formation in the flame collision area. Moreover, faster flame propagation toward the cylinder axis is highlighted with a consequent higher soot oxidation rate in the late combustion phase.	es_ES
dc.language	Inglés	es_ES
dc.publisher	Elsevier	es_ES
dc.relation.ispartof	Fuel	es_ES
dc.rights	Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)	es_ES
dc.subject	Innovative diesel engine piston bowl	es_ES
dc.subject	Optical engine	es_ES
dc.subject	2-Color pyrometry technique	es_ES
dc.subject	Computational Fluid Dynamics	es_ES
dc.subject	Numerical optical soot density KL	es_ES
dc.subject.classification	MAQUINAS Y MOTORES TERMICOS	es_ES
dc.title	Numerical and optical soot characterization through 2-color pyrometry technique for an innovative diesel piston bowl design	es_ES
dc.type	Artículo	es_ES
dc.identifier.doi	10.1016/j.fuel.2022.126347	es_ES
dc.rights.accessRights	Abierto	es_ES
dc.contributor.affiliation	Universitat Politècnica de València. Escuela Politécnica Superior de Alcoy - Escola Politècnica Superior d'Alcoi	es_ES
dc.contributor.affiliation	Universitat Politècnica de València. Departamento de Máquinas y Motores Térmicos - Departament de Màquines i Motors Tèrmics	es_ES
dc.description.bibliographicCitation	Piano, A.; Roggio, S.; Millo, F.; García Martínez, A.; Micó, C.; De Vargas Lewiski, F.; Pesce, FC.... (2023). Numerical and optical soot characterization through 2-color pyrometry technique for an innovative diesel piston bowl design. Fuel. 333. https://doi.org/10.1016/j.fuel.2022.126347	es_ES
dc.description.accrualMethod	S	es_ES
dc.relation.publisherversion	https://doi.org/10.1016/j.fuel.2022.126347	es_ES
dc.type.version	info:eu-repo/semantics/publishedVersion	es_ES
dc.description.volume	333	es_ES
dc.relation.pasarela	S\478294	es_ES



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