Differences between single and double-pass schlieren imaging on diesel vapor spray characteristics

[EN] The use olschlieren imaging at high acquisition rate has been adopted as a standard optical technique for the analysis of vaporizing diesel sprays under engine-like conditions. A single-pass schlieren arrangement is typically used for the study of axially drilled single-orifice nozzles, as vess...

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Autores: Payri, Raul|||0000-0001-7428-5510, Salvador, Francisco Javier|||0000-0003-3269-2251, Bracho Leon, Gabriela|||0000-0002-9198-7044, Viera-Sotillo, Alberto Antonio
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/148854
Acceso en línea:https://riunet.upv.es/handle/10251/148854
Access Level:acceso abierto
Palabra clave:Diesel injection
Schlieren
Vapor phase penetration
Spreading angle
MAQUINAS Y MOTORES TERMICOS
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oai_identifier_str oai:riunet.upv.es:10251/148854
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Differences between single and double-pass schlieren imaging on diesel vapor spray characteristics
title Differences between single and double-pass schlieren imaging on diesel vapor spray characteristics
spellingShingle Differences between single and double-pass schlieren imaging on diesel vapor spray characteristics
Payri, Raul|||0000-0001-7428-5510
Diesel injection
Schlieren
Vapor phase penetration
Spreading angle
MAQUINAS Y MOTORES TERMICOS
title_short Differences between single and double-pass schlieren imaging on diesel vapor spray characteristics
title_full Differences between single and double-pass schlieren imaging on diesel vapor spray characteristics
title_fullStr Differences between single and double-pass schlieren imaging on diesel vapor spray characteristics
title_full_unstemmed Differences between single and double-pass schlieren imaging on diesel vapor spray characteristics
title_sort Differences between single and double-pass schlieren imaging on diesel vapor spray characteristics
dc.creator.none.fl_str_mv Payri, Raul|||0000-0001-7428-5510
Salvador, Francisco Javier|||0000-0003-3269-2251
Bracho Leon, Gabriela|||0000-0002-9198-7044
Viera-Sotillo, Alberto Antonio
author Payri, Raul|||0000-0001-7428-5510
author_facet Payri, Raul|||0000-0001-7428-5510
Salvador, Francisco Javier|||0000-0003-3269-2251
Bracho Leon, Gabriela|||0000-0002-9198-7044
Viera-Sotillo, Alberto Antonio
author_role author
author2 Salvador, Francisco Javier|||0000-0003-3269-2251
Bracho Leon, Gabriela|||0000-0002-9198-7044
Viera-Sotillo, Alberto Antonio
author2_role author
author
author
dc.contributor.none.fl_str_mv Departamento de Máquinas y Motores Térmicos
Escuela Técnica Superior de Ingeniería Aeroespacial y Diseño Industrial
Instituto Universitario de Investigación CMT - Clean Mobility & Thermofluids
Escuela Técnica Superior de Ingeniería Industrial
European Regional Development Fund
Universitat Politècnica de València
Ministerio de Economía y Competitividad
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Diesel injection
Schlieren
Vapor phase penetration
Spreading angle
MAQUINAS Y MOTORES TERMICOS
topic Diesel injection
Schlieren
Vapor phase penetration
Spreading angle
MAQUINAS Y MOTORES TERMICOS
description [EN] The use olschlieren imaging at high acquisition rate has been adopted as a standard optical technique for the analysis of vaporizing diesel sprays under engine-like conditions. A single-pass schlieren arrangement is typically used for the study of axially drilled single-orifice nozzles, as vessels with multiple optical accesses regularly allow line of sight visualization. Contrarily, for multi-spray nozzles, measurements are commonly performed through a single,optical access, in which case a double-pass arrangement is employed. As a consequence, the light beams pass through the test section twice, increasing the optical sensitivity of the schlieren setup. However, the influence this has on the macroscopic spray characteristics is still unclear. The scope of this study is to analyze the differences in vapor phase penetration and spreading angle measured for the same injection event, through high-speed imaging, for both single and double-pass schlieren configurations. Experiments were carried out with a three hole nozzle with a nominal orifice diameter of 90 mu m, named Spray B from the Engine Combustion Network, using commercially available diesel fuel and in non-reactive conditions. The impact of different injection pressures, chamber temperatures and densities on the spray captured by each setup was assessed. On the results, vapor. phase penetration and spreading angle followed the expected trend found in the literature, for the different boundary conditions tested. Comparing the optical setups, vapor phase penetration and spreading angle results obtained with the double-pass arrangement were marginally higher than those from the single-pass. The deviation was observed throughout all tested conditions. For spray tip penetration, although the discrepancy was approximately constant for different injection pressures and chamber temperature, it increased with increasing density. These results highlight the importance of a proper understanding regarding the limitations of optical diagnostics, in particular for results used in calibration of computational models. (C) 2017 Elsevier Ltd. All rights reserved.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-10-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/148854
url https://riunet.upv.es/handle/10251/148854
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 TRA2015-67679-C2-1-R ESTUDIO DE LA INTERACCION CHORRO-PARED EN CONDICIONES REALISTAS DE MOTOR
Universitat Politècnica de València https://doi.org/10.13039/501100004233 FPI-2016-S2-1361
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Differences between single and double-pass schlieren imaging on diesel vapor spray characteristicsPayri, Raul|||0000-0001-7428-5510Salvador, Francisco Javier|||0000-0003-3269-2251Bracho Leon, Gabriela|||0000-0002-9198-7044Viera-Sotillo, Alberto AntonioDiesel injectionSchlierenVapor phase penetrationSpreading angleMAQUINAS Y MOTORES TERMICOS[EN] The use olschlieren imaging at high acquisition rate has been adopted as a standard optical technique for the analysis of vaporizing diesel sprays under engine-like conditions. A single-pass schlieren arrangement is typically used for the study of axially drilled single-orifice nozzles, as vessels with multiple optical accesses regularly allow line of sight visualization. Contrarily, for multi-spray nozzles, measurements are commonly performed through a single,optical access, in which case a double-pass arrangement is employed. As a consequence, the light beams pass through the test section twice, increasing the optical sensitivity of the schlieren setup. However, the influence this has on the macroscopic spray characteristics is still unclear. The scope of this study is to analyze the differences in vapor phase penetration and spreading angle measured for the same injection event, through high-speed imaging, for both single and double-pass schlieren configurations. Experiments were carried out with a three hole nozzle with a nominal orifice diameter of 90 mu m, named Spray B from the Engine Combustion Network, using commercially available diesel fuel and in non-reactive conditions. The impact of different injection pressures, chamber temperatures and densities on the spray captured by each setup was assessed. On the results, vapor. phase penetration and spreading angle followed the expected trend found in the literature, for the different boundary conditions tested. Comparing the optical setups, vapor phase penetration and spreading angle results obtained with the double-pass arrangement were marginally higher than those from the single-pass. The deviation was observed throughout all tested conditions. For spray tip penetration, although the discrepancy was approximately constant for different injection pressures and chamber temperature, it increased with increasing density. These results highlight the importance of a proper understanding regarding the limitations of optical diagnostics, in particular for results used in calibration of computational models. (C) 2017 Elsevier Ltd. All rights reserved.This research has been partially funded by FEDER and Spanish Ministerio de Economia y Competitividad through project TRA2015-67679-C2-1-R. Additionally, Alberto Viera is supported through the FPI contract 2016-S2-1361 of "Programa de Apoyo para la Investigacion y Desarrollo (PAID)" of Universitat Poltecnica de Valencia.ElsevierDepartamento de Máquinas y Motores TérmicosEscuela Técnica Superior de Ingeniería Aeroespacial y Diseño IndustrialInstituto Universitario de Investigación CMT - Clean Mobility & ThermofluidsEscuela Técnica Superior de Ingeniería IndustrialEuropean Regional Development FundUniversitat Politècnica de ValènciaMinisterio de Economía y CompetitividadRepositorio Institucional de la Universitat Politècnica de València Riunet20172017-10-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/148854reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 TRA2015-67679-C2-1-R ESTUDIO DE LA INTERACCION CHORRO-PARED EN CONDICIONES REALISTAS DE MOTORUniversitat Politècnica de València https://doi.org/10.13039/501100004233 FPI-2016-S2-1361open accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1488542026-06-13T07:49:27Z
score 15,300724

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