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A computational investigation on the influence of the use of elliptical orifices on the inner nozzle flow and cavitation development in diesel injector nozzles

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A computational investigation on the influence of the use of elliptical orifices on the inner nozzle flow and cavitation development in diesel injector nozzles

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dc.contributor.author Molina, Santiago es_ES
dc.contributor.author Salvador Rubio, Francisco Javier es_ES
dc.contributor.author Carreres Talens, Marcos es_ES
dc.contributor.author Jaramillo, D. es_ES
dc.date.accessioned 2016-01-19T13:48:32Z
dc.date.available 2016-01-19T13:48:32Z
dc.date.issued 2014-03
dc.identifier.issn 0196-8904
dc.identifier.uri http://hdl.handle.net/10251/60021
dc.description.abstract In this paper a computational study was carried out in order to investigate the influence of the use of elliptical orifices on the inner nozzle flow and cavitation development. With this aim, a large number of injection conditions have been simulated and analysed for 5 different nozzles: four nozzles with different elliptical orifices and one standard nozzle with circular orifices. The four elliptical nozzles differ from each other in the orientation of the major axis (vertical or horizontal) and in the eccentricity value, but keeping the same outlet section in all cases. The comparison has been made in terms of mass flow, momentum flux and other important non-dimensional parameters which help to describe the behaviour of the inner nozzle flow: discharge coefficient (C-d), area coefficient (C-a) and velocity coefficient (C-v). The simulations have been done with a code able to simulate the flow under either cavitating or non-cavitating conditions. This code has been previously validated using experimental measurements over the standard nozzle with circular orifices. The main results of the investigation have shown how the different geometries modify the critical cavitation conditions as well as the discharge coefficient and the effective velocity. In particular, elliptical geometries with vertically oriented major axis are less prone to cavitate and have a lower discharge coefficient, whereas elliptical geometries with horizontally oriented major axis are more prone to cavitate and show a higher discharge coefficient. (C) 2013 Elsevier Ltd. All rights reserved. es_ES
dc.description.sponsorship This work was partly sponsored by "Vicerrectorado de Investigacion, Desarrollo e Innovacion" of the "Universitat Politecnica de Valencia" in the frame of the project "Estudio de la influencia del uso de combustibles alternativos sobre el proceso de inyeccion mediante GRID computing (FUELGRID)", Reference SP20120396 and 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. This support is gratefully acknowledged by the authors. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation "Vicerrectorado de Investigacion, Desarrollo e Innovacion" of the "Universitat Politecnica de Valencia" in the frame of the project "Estudio de la influencia del uso de combustibles alternativos sobre el proceso de inyeccion mediante GRID computing" SP20120396 es_ES
dc.relation "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" TRA2012-36932 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 Elliptical nozzle 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 A computational investigation on the influence of the use of elliptical orifices on the inner nozzle flow and cavitation development in diesel injector nozzles es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.enconman.2013.12.015
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 Molina, S.; Salvador Rubio, FJ.; Carreres Talens, M.; Jaramillo, D. (2014). A computational investigation on the influence of the use of elliptical orifices on the inner nozzle flow and cavitation development in diesel injector nozzles. Energy Conversion and Management. 79:114-127. doi:10.1016/j.enconman.2013.12.015 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.enconman.2013.12.015 es_ES
dc.description.upvformatpinicio 114 es_ES
dc.description.upvformatpfin 127 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 79 es_ES
dc.relation.senia 265523 es_ES


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