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Analysis of the combined effect of hydrogrinding process and inclination angle on hydraulic performance of diesel injection nozzles

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Analysis of the combined effect of hydrogrinding process and inclination angle on hydraulic performance of diesel injection nozzles

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dc.contributor.author Salvador Rubio, Francisco Javier es_ES
dc.contributor.author Carreres Talens, Marcos es_ES
dc.contributor.author Jaramillo Císcar, David es_ES
dc.contributor.author Martínez López, Jorge es_ES
dc.date.accessioned 2016-06-06T11:44:37Z
dc.date.available 2016-06-06T11:44:37Z
dc.date.issued 2015-11-15
dc.identifier.issn 0196-8904
dc.identifier.uri http://hdl.handle.net/10251/65308
dc.description.abstract A computational study to investigate the influence of the orifices inclination and the rounding radius at the orifice inlet (consequence of the hydro-erosive grinding process applied after the orifices machining) over the internal nozzle flow is performed in this paper. The study starts with the analysis of experimental results where the mass flow and momentum flux of two nozzles with very different values of these two variables are compared. This analysis shows relatively small differences in terms of mass flow and momentum flux, since the higher losses associated to the higher deflection of the streamlines with a higher inclination of the orifices are counteracted by the higher rounding radius, which favors the flow entrance to the orifice. To explain this experimental outcome, an extensive computational study involving nine geometries that combine different inclination angles and rounding radius is conducted, in order to quantify the influence of both parameters on the flow separately, as well as to assess the potential of their combination. These geometries are compared in terms of discharge coefficient, critical cavitation conditions and effective injection velocity, among others. Results show differences up to 15% in terms of mass flow rate and 8% for the effective injection velocity among the two extreme cases (lowest inclination and highest hydro-erosion level versus the nozzle with the highest inclination and lowest hydro-erosion level). Given the importance of these phenomena on the subsequent mixing and combustion processes, the results hereby presented are of interest for Diesel engines injectors and combustion chambers designers. es_ES
dc.description.sponsorship This work was partly sponsored by "Ministerio de Economia y Competitividad" in the frame of the project "Comprension de la influencia de combustibles no convencionales en el proceso de inyeccion y combustion tipo diesel", Reference TRA2012-36932. The equipment used in this work has been partially supported by FEDER project funds "Dotacion de infraestructuras cientifico tecnicas para el Centro Integral de Mejora Energetica y Medioambiental de Sistemas de Transporte (CiMeT), (FEDER-ICTS-2012-06)", in the frame of the operation program of unique scientific and technical infrastructure of the Ministry of Science and Innovation of Spain. This support is gratefully acknowledged by the authors. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Energy Conversion and Management es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Diesel es_ES
dc.subject Injection es_ES
dc.subject Nozzle es_ES
dc.subject Inclination es_ES
dc.subject Hydrogrinding es_ES
dc.subject Cavitation es_ES
dc.subject.classification INGENIERIA AEROESPACIAL es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.title Analysis of the combined effect of hydrogrinding process and inclination angle on hydraulic performance of diesel injection nozzles es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.enconman.2015.08.035
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Máquinas y Motores Térmicos - Departament de Màquines i Motors Tèrmics es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario CMT-Motores Térmicos - Institut Universitari CMT-Motors Tèrmics es_ES
dc.description.bibliographicCitation Salvador Rubio, FJ.; Carreres Talens, M.; Jaramillo Císcar, D.; Martínez López, J. (2015). Analysis of the combined effect of hydrogrinding process and inclination angle on hydraulic performance of diesel injection nozzles. Energy Conversion and Management. 105:1352-1365. doi:10.1016/j.enconman.2015.08.035 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.enconman.2015.08.035 es_ES
dc.description.upvformatpinicio 1352 es_ES
dc.description.upvformatpfin 1365 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 105 es_ES
dc.relation.senia 293189 es_ES


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