Understanding the diesel-like spray characteristics applying a flamelet-based combustion model and detailed large eddy simulations

[EN] This investigation analyses the structure of spray A from engine combustion network (ECN), which is representative of diesel-like sprays, by means of large eddy simulations and an unsteady flamelet progress variable combustion model. A very good agreement between modelled and experimental measu...

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Authors: Pérez-Sánchez, Eduardo J., García-Oliver, José M|||0000-0002-2676-9681, Novella Rosa, Ricardo|||0000-0002-5123-6924, Pastor Enguídanos, José Manuel|||0000-0003-4458-0353
Format: article
Publication Date:2020
Country:España
Institution:Universitat Politècnica de València (UPV)
Repository:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Language:English
OAI Identifier:oai:riunet.upv.es:10251/169190
Online Access:https://riunet.upv.es/handle/10251/169190
Access Level:Open access
Keyword:Combustion modelling
Spray A
Flamelet concept
Auto-ignition
Large eddy simulation turbulence model
MAQUINAS Y MOTORES TERMICOS
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network_name_str España
repository_id_str
spelling Understanding the diesel-like spray characteristics applying a flamelet-based combustion model and detailed large eddy simulationsPérez-Sánchez, Eduardo J.García-Oliver, José M|||0000-0002-2676-9681Novella Rosa, Ricardo|||0000-0002-5123-6924Pastor Enguídanos, José Manuel|||0000-0003-4458-0353Combustion modellingSpray AFlamelet conceptAuto-ignitionLarge eddy simulation turbulence modelMAQUINAS Y MOTORES TERMICOS[EN] This investigation analyses the structure of spray A from engine combustion network (ECN), which is representative of diesel-like sprays, by means of large eddy simulations and an unsteady flamelet progress variable combustion model. A very good agreement between modelled and experimental measurements is obtained for the inert spray that supports further analysis. A parametric variation in oxygen concentration is carried out in order to describe the structure of the flame and how it is modified when mixture reactivity is changed. The most relevant trends for the flame metrics, ignition delay and lift-off length are well-captured by the simulations corroborating the suitability of the model for this type of configuration. Results show that the morphology of the flame is strongly affected by the boundary conditions in terms of the reactive scalar spatial fields and Z-T maps. The filtered instantaneous fields provided by the simulations allow investigation of the structure of the flame at the lift-off length, whose positioning shows low fluctuations, and how it is affected by turbulence. It is evidenced that small ignition kernels appear upstream and detached from the flame that eventually merge with its base in agreement with experimental observations, leading to state that auto-ignition plays a key role as one of the flame stabilization mechanisms of the flame.The author(s) disclosed receipt of the following financial support for the research, authorship and/or publication of this article: The authors acknowledge that this work was possible thanks to the Ayuda para la Formacion de Profesorado Universitario (FPU 14/03278) funded by the Subprogramas de Formacion y de Movilidad del Ministerio de Educacion, Cultura y Deporte from Spain. Also, this study was partially funded by the Ministerio de Economia y Competitividad from Spain in the frame of the CHEST (TRA2017-89139-C2-1-R) national project.SAGE PublicationsDepartamento de Máquinas y Motores TérmicosEscuela Técnica Superior de Ingeniería Aeroespacial y Diseño IndustrialInstituto Universitario de Investigación CMT - Clean Mobility & ThermofluidsAgencia Estatal de InvestigaciónMinisterio de Educación, Cultura y DeporteRepositorio Institucional de la Universitat Politècnica de València Riunet20202020-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/169190reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 TRA2017-89139-C2-1-R DESARROLLO DE MODELOS DE COMBUSTION Y EMISIONES HPC PARA EL ANALISIS DE PLANTAS PROPULSIVAS DE TRANSPORTE SOSTENIBLESMinisterio de Educación y Cultura http://dx.doi.org/10.13039/501100003176 FPU14%2F03278 FPU14%2F03278open accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1691902026-06-13T07:49:27Z
dc.title.none.fl_str_mv Understanding the diesel-like spray characteristics applying a flamelet-based combustion model and detailed large eddy simulations
title Understanding the diesel-like spray characteristics applying a flamelet-based combustion model and detailed large eddy simulations
spellingShingle Understanding the diesel-like spray characteristics applying a flamelet-based combustion model and detailed large eddy simulations
Pérez-Sánchez, Eduardo J.
Combustion modelling
Spray A
Flamelet concept
Auto-ignition
Large eddy simulation turbulence model
MAQUINAS Y MOTORES TERMICOS
title_short Understanding the diesel-like spray characteristics applying a flamelet-based combustion model and detailed large eddy simulations
title_full Understanding the diesel-like spray characteristics applying a flamelet-based combustion model and detailed large eddy simulations
title_fullStr Understanding the diesel-like spray characteristics applying a flamelet-based combustion model and detailed large eddy simulations
title_full_unstemmed Understanding the diesel-like spray characteristics applying a flamelet-based combustion model and detailed large eddy simulations
title_sort Understanding the diesel-like spray characteristics applying a flamelet-based combustion model and detailed large eddy simulations
dc.creator.none.fl_str_mv Pérez-Sánchez, Eduardo J.
García-Oliver, José M|||0000-0002-2676-9681
Novella Rosa, Ricardo|||0000-0002-5123-6924
Pastor Enguídanos, José Manuel|||0000-0003-4458-0353
author Pérez-Sánchez, Eduardo J.
author_facet Pérez-Sánchez, Eduardo J.
García-Oliver, José M|||0000-0002-2676-9681
Novella Rosa, Ricardo|||0000-0002-5123-6924
Pastor Enguídanos, José Manuel|||0000-0003-4458-0353
author_role author
author2 García-Oliver, José M|||0000-0002-2676-9681
Novella Rosa, Ricardo|||0000-0002-5123-6924
Pastor Enguídanos, José Manuel|||0000-0003-4458-0353
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
Agencia Estatal de Investigación
Ministerio de Educación, Cultura y Deporte
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Combustion modelling
Spray A
Flamelet concept
Auto-ignition
Large eddy simulation turbulence model
MAQUINAS Y MOTORES TERMICOS
topic Combustion modelling
Spray A
Flamelet concept
Auto-ignition
Large eddy simulation turbulence model
MAQUINAS Y MOTORES TERMICOS
description [EN] This investigation analyses the structure of spray A from engine combustion network (ECN), which is representative of diesel-like sprays, by means of large eddy simulations and an unsteady flamelet progress variable combustion model. A very good agreement between modelled and experimental measurements is obtained for the inert spray that supports further analysis. A parametric variation in oxygen concentration is carried out in order to describe the structure of the flame and how it is modified when mixture reactivity is changed. The most relevant trends for the flame metrics, ignition delay and lift-off length are well-captured by the simulations corroborating the suitability of the model for this type of configuration. Results show that the morphology of the flame is strongly affected by the boundary conditions in terms of the reactive scalar spatial fields and Z-T maps. The filtered instantaneous fields provided by the simulations allow investigation of the structure of the flame at the lift-off length, whose positioning shows low fluctuations, and how it is affected by turbulence. It is evidenced that small ignition kernels appear upstream and detached from the flame that eventually merge with its base in agreement with experimental observations, leading to state that auto-ignition plays a key role as one of the flame stabilization mechanisms of the flame.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-01-01
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/10251/169190
url https://riunet.upv.es/handle/10251/169190
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 TRA2017-89139-C2-1-R DESARROLLO DE MODELOS DE COMBUSTION Y EMISIONES HPC PARA EL ANALISIS DE PLANTAS PROPULSIVAS DE TRANSPORTE SOSTENIBLES
Ministerio de Educación y Cultura http://dx.doi.org/10.13039/501100003176 FPU14%2F03278 FPU14%2F03278
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
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
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv SAGE Publications
publisher.none.fl_str_mv SAGE Publications
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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score 15,301603

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