Numerical characterization of a technically premixed hydrogen flame under conditions close to flashback
This work presents a numerical study of a technically premixed swirling combustor with central air injection at conditions close to flashback using large-eddy simulation with flamelet modelling. This burner has the characteristics of showing flashback at low equivalence ratios, so numerical simulati...
| Autores: | , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/192654 |
| Acceso en línea: | https://hdl.handle.net/2117/192654 https://dx.doi.org/10.1007/s10494-019-00106-z |
| Access Level: | acceso abierto |
| Palabra clave: | Combustion Premixed burner Swirl-stabilized flames Flashback safety Precessing vortex core Flamelet Combustió Àrees temàtiques de la UPC::Aeronàutica i espai::Astronàutica::Enginyeria aeroespacial |
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| dc.title.none.fl_str_mv |
Numerical characterization of a technically premixed hydrogen flame under conditions close to flashback |
| title |
Numerical characterization of a technically premixed hydrogen flame under conditions close to flashback |
| spellingShingle |
Numerical characterization of a technically premixed hydrogen flame under conditions close to flashback Mira Martínez, Daniel Combustion Premixed burner Swirl-stabilized flames Flashback safety Precessing vortex core Flamelet Combustió Àrees temàtiques de la UPC::Aeronàutica i espai::Astronàutica::Enginyeria aeroespacial |
| title_short |
Numerical characterization of a technically premixed hydrogen flame under conditions close to flashback |
| title_full |
Numerical characterization of a technically premixed hydrogen flame under conditions close to flashback |
| title_fullStr |
Numerical characterization of a technically premixed hydrogen flame under conditions close to flashback |
| title_full_unstemmed |
Numerical characterization of a technically premixed hydrogen flame under conditions close to flashback |
| title_sort |
Numerical characterization of a technically premixed hydrogen flame under conditions close to flashback |
| dc.creator.none.fl_str_mv |
Mira Martínez, Daniel Lehmkuhl Barba, Oriol|||0000-0002-2670-1871 Both, Ambrus|||0000-0002-5267-204X Stathopoulos, Panagiotis Tanneberger, Tom Reichel, Thoralf G. Paschereit, Christian Oliver Vázquez, Mariano|||0000-0002-2526-6708 Houzeaux, Guillaume|||0000-0002-2592-1426 |
| author |
Mira Martínez, Daniel |
| author_facet |
Mira Martínez, Daniel Lehmkuhl Barba, Oriol|||0000-0002-2670-1871 Both, Ambrus|||0000-0002-5267-204X Stathopoulos, Panagiotis Tanneberger, Tom Reichel, Thoralf G. Paschereit, Christian Oliver Vázquez, Mariano|||0000-0002-2526-6708 Houzeaux, Guillaume|||0000-0002-2592-1426 |
| author_role |
author |
| author2 |
Lehmkuhl Barba, Oriol|||0000-0002-2670-1871 Both, Ambrus|||0000-0002-5267-204X Stathopoulos, Panagiotis Tanneberger, Tom Reichel, Thoralf G. Paschereit, Christian Oliver Vázquez, Mariano|||0000-0002-2526-6708 Houzeaux, Guillaume|||0000-0002-2592-1426 |
| author2_role |
author author author author author author author author |
| dc.subject.none.fl_str_mv |
Combustion Premixed burner Swirl-stabilized flames Flashback safety Precessing vortex core Flamelet Combustió Àrees temàtiques de la UPC::Aeronàutica i espai::Astronàutica::Enginyeria aeroespacial |
| topic |
Combustion Premixed burner Swirl-stabilized flames Flashback safety Precessing vortex core Flamelet Combustió Àrees temàtiques de la UPC::Aeronàutica i espai::Astronàutica::Enginyeria aeroespacial |
| description |
This work presents a numerical study of a technically premixed swirling combustor with central air injection at conditions close to flashback using large-eddy simulation with flamelet modelling. This burner has the characteristics of showing flashback at low equivalence ratios, so numerical simulations are set to identify the mechanisms behind the flashback formation. Experimental findings suggest the axial momentum ratio between fuel and air dominates the flame stabilization mechanism and flashback resistance over mixing and equivalence ratio fluctuations. This aspect is investigated here for two operating conditions with the same axial momentum ratio as in the experiment using a perfectly premixed assumption. The two test cases correspond to two stable operating points, far and close to the flashback point. The study shows the assumption of perfect premixing is valid during the stable operation of the burner up to flashback conditions. The experimental results are well predicted under inert and reacting conditions by using a perfectly premixed mixture. It is found that the non reacting flow field develops a self-excited oscillation in the form of a precessing vortex core. This oscillation is attenuated by the fuel injection due to the respective increase in axial momentum and it is ultimately suppressed in the reacting flow field. Both experiments and simulations confirm the same trends. The analysis of the flames have shown certain dynamics as the flashback point is approached. The flashback resistance of the burner is minimized due to an increase in the velocity deficit of the incoming mixture. The recirculation region is shifted upstream, the central recirculation is altered and the flame position is displaced towards the inlet of the reactants in the combustion chamber. The analysis of instabilities and flow dynamics suggest that the formation of flashback can be attributed to combustion induced vortex breakdown, which in turn is associated to the lower axial momentum introduced by the fuel jets in leaner conditions. |
| publishDate |
2020 |
| dc.date.none.fl_str_mv |
2020 2020-03-01 2020 2020-07-08 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 AM http://purl.org/coar/version/c_ab4af688f83e57aa |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2117/192654 https://dx.doi.org/10.1007/s10494-019-00106-z |
| url |
https://hdl.handle.net/2117/192654 https://dx.doi.org/10.1007/s10494-019-00106-z |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.relation.none.fl_str_mv |
European Commission http://doi.org/10.13039/100010661 Horizon 2020 Framework Programme 713673 Innovative doctoral programme for talented early-stage researchers in Spanish host organisations excellent in the areas of Science, Technology, Engineering and Mathematics (STEM). Agencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 TRA2017-89139-C2-2-R IMPLEMENTACION Y VALIDACION DE MODELOS HPC DE COMBUSTION Y EMISIONES PARA EL ANALISIS DE SISTEMAS DE TRANSPORTE SOSTENIBLES Ministerio de Economía y Competitividad http://doi.org/10.13039/501100003329 IJCI-2015-26686 IJCI-2015-26686 |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| 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 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Springer |
| publisher.none.fl_str_mv |
Springer |
| dc.source.none.fl_str_mv |
reponame:UPCommons. Portal del coneixement obert de la UPC instname:Universitat Politècnica de Catalunya (UPC) |
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Universitat Politècnica de Catalunya (UPC) |
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UPCommons. Portal del coneixement obert de la UPC |
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UPCommons. Portal del coneixement obert de la UPC |
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1869421798218530816 |
| spelling |
Numerical characterization of a technically premixed hydrogen flame under conditions close to flashbackMira Martínez, DanielLehmkuhl Barba, Oriol|||0000-0002-2670-1871Both, Ambrus|||0000-0002-5267-204XStathopoulos, PanagiotisTanneberger, TomReichel, Thoralf G.Paschereit, Christian OliverVázquez, Mariano|||0000-0002-2526-6708Houzeaux, Guillaume|||0000-0002-2592-1426CombustionPremixed burnerSwirl-stabilized flamesFlashback safetyPrecessing vortex coreFlameletCombustióÀrees temàtiques de la UPC::Aeronàutica i espai::Astronàutica::Enginyeria aeroespacialThis work presents a numerical study of a technically premixed swirling combustor with central air injection at conditions close to flashback using large-eddy simulation with flamelet modelling. This burner has the characteristics of showing flashback at low equivalence ratios, so numerical simulations are set to identify the mechanisms behind the flashback formation. Experimental findings suggest the axial momentum ratio between fuel and air dominates the flame stabilization mechanism and flashback resistance over mixing and equivalence ratio fluctuations. This aspect is investigated here for two operating conditions with the same axial momentum ratio as in the experiment using a perfectly premixed assumption. The two test cases correspond to two stable operating points, far and close to the flashback point. The study shows the assumption of perfect premixing is valid during the stable operation of the burner up to flashback conditions. The experimental results are well predicted under inert and reacting conditions by using a perfectly premixed mixture. It is found that the non reacting flow field develops a self-excited oscillation in the form of a precessing vortex core. This oscillation is attenuated by the fuel injection due to the respective increase in axial momentum and it is ultimately suppressed in the reacting flow field. Both experiments and simulations confirm the same trends. The analysis of the flames have shown certain dynamics as the flashback point is approached. The flashback resistance of the burner is minimized due to an increase in the velocity deficit of the incoming mixture. The recirculation region is shifted upstream, the central recirculation is altered and the flame position is displaced towards the inlet of the reactants in the combustion chamber. The analysis of instabilities and flow dynamics suggest that the formation of flashback can be attributed to combustion induced vortex breakdown, which in turn is associated to the lower axial momentum introduced by the fuel jets in leaner conditions.The research leading to these results has received funding through the Spanish Ministry of Economy and Competitiveness in the frame of the CHEST project (TRA2017- 89139-C2-2-R). Conflict of Interest: Daniel Mira acknowledges the Juan de la Cierva personal grant IJCI-2015-26686 and Ambrus Both the Marie Skłodowska-Curie grant agreement No. 713673 through the ”la Caixa” INPhINIT Fellowship Grant. Computer resources and technical assistance has been provided by the Red Española de Supercomputación (RES) and the Gauss Centre for Supercomputing e.V. (www.gauss-centre.eu) on the GCS Supercomputer SuperMUC at Leibniz Supercomputing Centre (www.lrz.de). The TU Berlin would like to acknowledge the funding received from the EU Seventh Framework Program (FP7/2007-2013) under GA284636 and the European Research Council under the ERC GREENEST with GA247322.Peer ReviewedSpringer20202020-03-0120202020-07-08journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/192654https://dx.doi.org/10.1007/s10494-019-00106-zreponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengEuropean Commission http://doi.org/10.13039/100010661 Horizon 2020 Framework Programme 713673 Innovative doctoral programme for talented early-stage researchers in Spanish host organisations excellent in the areas of Science, Technology, Engineering and Mathematics (STEM).Agencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 TRA2017-89139-C2-2-R IMPLEMENTACION Y VALIDACION DE MODELOS HPC DE COMBUSTION Y EMISIONES PARA EL ANALISIS DE SISTEMAS DE TRANSPORTE SOSTENIBLESMinisterio de Economía y Competitividad http://doi.org/10.13039/501100003329 IJCI-2015-26686 IJCI-2015-26686open accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1926542026-05-27T15:37:01Z |
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15,300719 |