DDT limits of ethanol–air in an obstacles-filled tube
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1080/00102202.2018.1477770 http://hdl.handle.net/11449/177148 |
Resumo: | Experiments were performed to study flame acceleration and deflagration-to-detonation transition (DDT) in ethanol–air mixtures in a tube filled with orifice plates with a blockage ratio of 0.44. Tests were conducted at initial temperatures of 100 and 200°C, and initial pressures of 60 and 101 kPa. Experiments carried out at 60 kPa did not result in DDT, whereas tests performed at 101 kPa, at both 100 and 200°C, resulted in DDT for mixtures in the equivalence ratio range of 1.1–1.3. In a previous study, cell size data of a “double cell structure” have been obtained for mixtures of ethanol–air. Using the d/λ = 1 criterion (that has been confirmed in the tube and orifice plate geometry used in this study with gaseous fuels at room temperature), it was determined that the DDT limit correlates with the ethanol large-cell size reported in the previous study. As a result, for explosion safety purposes, the large-cell size data should be used for assessing the DDT potential of an ethanol–air mixture. |
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Repositório Institucional da UNESP |
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DDT limits of ethanol–air in an obstacles-filled tubeCell sizeDDT-LimitsEthanolFlame accelerationExperiments were performed to study flame acceleration and deflagration-to-detonation transition (DDT) in ethanol–air mixtures in a tube filled with orifice plates with a blockage ratio of 0.44. Tests were conducted at initial temperatures of 100 and 200°C, and initial pressures of 60 and 101 kPa. Experiments carried out at 60 kPa did not result in DDT, whereas tests performed at 101 kPa, at both 100 and 200°C, resulted in DDT for mixtures in the equivalence ratio range of 1.1–1.3. In a previous study, cell size data of a “double cell structure” have been obtained for mixtures of ethanol–air. Using the d/λ = 1 criterion (that has been confirmed in the tube and orifice plate geometry used in this study with gaseous fuels at room temperature), it was determined that the DDT limit correlates with the ethanol large-cell size reported in the previous study. As a result, for explosion safety purposes, the large-cell size data should be used for assessing the DDT potential of an ethanol–air mixture.School of Engineering, Energy Department, São Paulo University (UNESP), Guaratinguetá, São Paulo, BrazilDepartment of Mechanical and Materials Engineering, Queen’s University, Kingston, ON, CanadaUniversidade Estadual Paulista (Unesp)Mendiburu Zevallos, Andrés ArmandoCiccarelli, GabrielCarvalho Jr., João A.2018-12-11T17:24:13Z2018-12-11T17:24:13Z2018-06-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-16application/pdfhttp://dx.doi.org/10.1080/00102202.2018.1477770Combustion Science and Technology, p. 1-16.1563-521X0010-2202http://hdl.handle.net/11449/17714810.1080/00102202.2018.14777702-s2.0-850483566152-s2.0-85048356615.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCombustion Science and Technology0,683info:eu-repo/semantics/openAccess2023-11-17T06:11:26Zoai:repositorio.unesp.br:11449/177148Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-17T06:11:26Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
DDT limits of ethanol–air in an obstacles-filled tube |
title |
DDT limits of ethanol–air in an obstacles-filled tube |
spellingShingle |
DDT limits of ethanol–air in an obstacles-filled tube Mendiburu Zevallos, Andrés Armando Cell size DDT-Limits Ethanol Flame acceleration |
title_short |
DDT limits of ethanol–air in an obstacles-filled tube |
title_full |
DDT limits of ethanol–air in an obstacles-filled tube |
title_fullStr |
DDT limits of ethanol–air in an obstacles-filled tube |
title_full_unstemmed |
DDT limits of ethanol–air in an obstacles-filled tube |
title_sort |
DDT limits of ethanol–air in an obstacles-filled tube |
author |
Mendiburu Zevallos, Andrés Armando |
author_facet |
Mendiburu Zevallos, Andrés Armando Ciccarelli, Gabriel Carvalho Jr., João A. |
author_role |
author |
author2 |
Ciccarelli, Gabriel Carvalho Jr., João A. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Mendiburu Zevallos, Andrés Armando Ciccarelli, Gabriel Carvalho Jr., João A. |
dc.subject.por.fl_str_mv |
Cell size DDT-Limits Ethanol Flame acceleration |
topic |
Cell size DDT-Limits Ethanol Flame acceleration |
description |
Experiments were performed to study flame acceleration and deflagration-to-detonation transition (DDT) in ethanol–air mixtures in a tube filled with orifice plates with a blockage ratio of 0.44. Tests were conducted at initial temperatures of 100 and 200°C, and initial pressures of 60 and 101 kPa. Experiments carried out at 60 kPa did not result in DDT, whereas tests performed at 101 kPa, at both 100 and 200°C, resulted in DDT for mixtures in the equivalence ratio range of 1.1–1.3. In a previous study, cell size data of a “double cell structure” have been obtained for mixtures of ethanol–air. Using the d/λ = 1 criterion (that has been confirmed in the tube and orifice plate geometry used in this study with gaseous fuels at room temperature), it was determined that the DDT limit correlates with the ethanol large-cell size reported in the previous study. As a result, for explosion safety purposes, the large-cell size data should be used for assessing the DDT potential of an ethanol–air mixture. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T17:24:13Z 2018-12-11T17:24:13Z 2018-06-09 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1080/00102202.2018.1477770 Combustion Science and Technology, p. 1-16. 1563-521X 0010-2202 http://hdl.handle.net/11449/177148 10.1080/00102202.2018.1477770 2-s2.0-85048356615 2-s2.0-85048356615.pdf |
url |
http://dx.doi.org/10.1080/00102202.2018.1477770 http://hdl.handle.net/11449/177148 |
identifier_str_mv |
Combustion Science and Technology, p. 1-16. 1563-521X 0010-2202 10.1080/00102202.2018.1477770 2-s2.0-85048356615 2-s2.0-85048356615.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Combustion Science and Technology 0,683 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1-16 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964967595671552 |