A study of the controlling parameters of fuel air mixture formation for ECN Spray A

[EN] Designing future ultra-high efficiency, ultra-low emission engines requires an in depth understanding of the multiscale, multi-phase phenomena taking place in the combustion chamber. The performance of the fuel delivery system is key in the air fuel mixture formation and hence the combustion ch...

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Bibliographic Details
Authors: Vogiatzaki, Konstantina, Crua, Cyril, Morgan, Robert, Heikal, Morgan
Format: book part
Publication Date:2017
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:10251/101607
Online Access:https://riunet.upv.es/handle/10251/101607
Access Level:Open access
Keyword:ECN Spray A
Eulerian-Lagrangian
LES
OpenFOAM
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spelling A study of the controlling parameters of fuel air mixture formation for ECN Spray AVogiatzaki, KonstantinaCrua, CyrilMorgan, RobertHeikal, MorganECN Spray AEulerian-LagrangianLESOpenFOAM[EN] Designing future ultra-high efficiency, ultra-low emission engines requires an in depth understanding of the multiscale, multi-phase phenomena taking place in the combustion chamber. The performance of the fuel delivery system is key in the air fuel mixture formation and hence the combustion characteristics, however in most spray modelling approaches is not considered directly. Thus, it is important to understand how the selection of models that mimic injection process affect predictions. In this paper we present an Eulerian-Lagrangian framework based on OpenFOAM libraries to model spray injection dynamics. The framework accounts for primary droplet formation (based on a parcel method with predefined initial droplet size distribution), secondary droplet breakup, evaporation and heat transfer. In order to account for the interaction of droplets with turbulence, simulations were performed within the LES context with two different turbulence models. A systematic variation of the key injection parameters (parcel number, parcel size distribution) of the parcel method as well as the grid size was considered. Varying the parcel number affects the initial droplet size distribution which in turn, depending on the selection of the turbulence and the evaporation sub-models, affects: spray dispersion; spray penetration; and subsequent droplet size distribution. Results were validated against the baseline experimental data for evaporating ECN Spray A with n-dodecane chosen as a surrogate for Diesel fuel.This work was supported by the UK’s Engineering and Physical Science Research Council [grants EP/P012744/1 and EP/K020528/1].Editorial Universitat Politècnica de ValènciaEngineering and Physical Sciences Research Council, Reino UnidoUK Research and InnovationRepositorio Institucional de la Universitat Politècnica de València Riunet20172017-07-28book parthttp://purl.org/coar/resource_type/c_3248VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/bookPartapplication/pdfhttps://riunet.upv.es/handle/10251/101607reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengUK Research and Innovation https://doi.org/10.13039/100014013 EP%2FK020528%2F1 Investigation of Non-Spherical Droplets in High-Pressure Fuel SpraysUK Research and Innovation https://doi.org/10.13039/100014013 EP%2FP012744%2F1 Unified modelling framework of sub- and super- critical injection dynamicsopen 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:10251/1016072026-06-13T07:49:27Z
dc.title.none.fl_str_mv A study of the controlling parameters of fuel air mixture formation for ECN Spray A
title A study of the controlling parameters of fuel air mixture formation for ECN Spray A
spellingShingle A study of the controlling parameters of fuel air mixture formation for ECN Spray A
Vogiatzaki, Konstantina
ECN Spray A
Eulerian-Lagrangian
LES
OpenFOAM
title_short A study of the controlling parameters of fuel air mixture formation for ECN Spray A
title_full A study of the controlling parameters of fuel air mixture formation for ECN Spray A
title_fullStr A study of the controlling parameters of fuel air mixture formation for ECN Spray A
title_full_unstemmed A study of the controlling parameters of fuel air mixture formation for ECN Spray A
title_sort A study of the controlling parameters of fuel air mixture formation for ECN Spray A
dc.creator.none.fl_str_mv Vogiatzaki, Konstantina
Crua, Cyril
Morgan, Robert
Heikal, Morgan
author Vogiatzaki, Konstantina
author_facet Vogiatzaki, Konstantina
Crua, Cyril
Morgan, Robert
Heikal, Morgan
author_role author
author2 Crua, Cyril
Morgan, Robert
Heikal, Morgan
author2_role author
author
author
dc.contributor.none.fl_str_mv Engineering and Physical Sciences Research Council, Reino Unido
UK Research and Innovation
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv ECN Spray A
Eulerian-Lagrangian
LES
OpenFOAM
topic ECN Spray A
Eulerian-Lagrangian
LES
OpenFOAM
description [EN] Designing future ultra-high efficiency, ultra-low emission engines requires an in depth understanding of the multiscale, multi-phase phenomena taking place in the combustion chamber. The performance of the fuel delivery system is key in the air fuel mixture formation and hence the combustion characteristics, however in most spray modelling approaches is not considered directly. Thus, it is important to understand how the selection of models that mimic injection process affect predictions. In this paper we present an Eulerian-Lagrangian framework based on OpenFOAM libraries to model spray injection dynamics. The framework accounts for primary droplet formation (based on a parcel method with predefined initial droplet size distribution), secondary droplet breakup, evaporation and heat transfer. In order to account for the interaction of droplets with turbulence, simulations were performed within the LES context with two different turbulence models. A systematic variation of the key injection parameters (parcel number, parcel size distribution) of the parcel method as well as the grid size was considered. Varying the parcel number affects the initial droplet size distribution which in turn, depending on the selection of the turbulence and the evaporation sub-models, affects: spray dispersion; spray penetration; and subsequent droplet size distribution. Results were validated against the baseline experimental data for evaporating ECN Spray A with n-dodecane chosen as a surrogate for Diesel fuel.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-07-28
dc.type.none.fl_str_mv book part
http://purl.org/coar/resource_type/c_3248
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/bookPart
format bookPart
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/101607
url https://riunet.upv.es/handle/10251/101607
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv UK Research and Innovation https://doi.org/10.13039/100014013 EP%2FK020528%2F1 Investigation of Non-Spherical Droplets in High-Pressure Fuel Sprays
UK Research and Innovation https://doi.org/10.13039/100014013 EP%2FP012744%2F1 Unified modelling framework of sub- and super- critical injection dynamics
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
dc.publisher.none.fl_str_mv Editorial Universitat Politècnica de València
publisher.none.fl_str_mv Editorial Universitat Politècnica de València
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 15,198674

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