The role of composition in the combustion of n-heptane/iso-butanol mixtures: experiments and detailed modelling
Experimental data and detailed numerical modelling are presented on the burning characteristics of a model gasoline/biofuel mixture consisting of n-heptane and iso-butanol. A droplet burning in an environment that minimises the influence of buoyant and forced convective flows in the standard atmosph...
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| Veröffentlicht in: | Combustion theory and modelling 2020-11, Vol.24 (6), p.1002-1020 |
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| creator | Dalili, Alireza Brunson, Jordan D. Guo, Songtao Turello, Massimiliano Pizzetti, Fabio Badiali, Lucia Avedisian, Charles T. Seshadri, Kalyanasundaram Cuoci, Alberto Williams, Forman A. Frassoldati, Alessio Hicks, Michael C. |
| description | Experimental data and detailed numerical modelling are presented on the burning characteristics of a model gasoline/biofuel mixture consisting of n-heptane and iso-butanol. A droplet burning in an environment that minimises the influence of buoyant and forced convective flows in the standard atmosphere is used to promote one-dimensional gas transport to facilitate numerical modelling of the droplet burning process. The numerical model includes a detailed combustion kinetic mechanism, unsteady gas and liquid transport, multicomponent diffusion inside the droplet, variable properties, and non-luminous radiative heat transfer from the flame. The numerical simulation was validated by experimental measurements in the standard atmosphere which showed good agreement with the evolutions of droplet and flame diameters. The iso-butanol concentration had a strong effect on formation of particulates. Above ~20% (volume) iso-butanol, flame luminosity was significantly diminished anddecreased with increasing iso-butanol concentration, while CO
2
emissions as a representative greenhouse gas were not strongly influenced by the iso-butanol loading. The soot shell was located near a 1350 K isotherm for concentrations up to 20% (volume) iso-butanol, suggesting this value as a possible soot inception temperature for the mixture droplet. The combustion rate decreased with increasing iso-butanol concentration which was attributed to iso-butanol's higher liquid density. No evidence of a low temperature burning regime, or of extinction, was found (in experiments and simulations) for the small droplet sizes investigated. |
| doi_str_mv | 10.1080/13647830.2020.1800823 |
| format | Article |
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2
emissions as a representative greenhouse gas were not strongly influenced by the iso-butanol loading. The soot shell was located near a 1350 K isotherm for concentrations up to 20% (volume) iso-butanol, suggesting this value as a possible soot inception temperature for the mixture droplet. The combustion rate decreased with increasing iso-butanol concentration which was attributed to iso-butanol's higher liquid density. No evidence of a low temperature burning regime, or of extinction, was found (in experiments and simulations) for the small droplet sizes investigated.</description><identifier>ISSN: 1364-7830</identifier><identifier>EISSN: 1741-3559</identifier><identifier>DOI: 10.1080/13647830.2020.1800823</identifier><language>eng</language><publisher>Abingdon: Taylor & Francis</publisher><subject>Atmospheric models ; biofuel ; Biofuels ; Butanol ; Combustion ; Convective flow ; Diameters ; droplet ; droplet combustion ; Droplets ; Energy & Fuels ; Engineering ; Gas transport ; Gasoline ; Greenhouse effect ; Greenhouse gases ; Heptanes ; iso-butanol ; Low temperature ; Luminosity ; Mathematical models ; Mathematics ; n-heptane ; Numerical models ; Particulates ; Radiative heat transfer ; Soot ; surrogate ; Thermodynamics</subject><ispartof>Combustion theory and modelling, 2020-11, Vol.24 (6), p.1002-1020</ispartof><rights>2020 Informa UK Limited, trading as Taylor & Francis Group 2020</rights><rights>2020 Informa UK Limited, trading as Taylor & Francis Group</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c365t-c2edbdc409d1f9e88e853c2605f42312fd3bd7cde862a9704a4fd6d96ae1927e3</citedby><cites>FETCH-LOGICAL-c365t-c2edbdc409d1f9e88e853c2605f42312fd3bd7cde862a9704a4fd6d96ae1927e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.tandfonline.com/doi/pdf/10.1080/13647830.2020.1800823$$EPDF$$P50$$Ginformaworld$$H</linktopdf><linktohtml>$$Uhttps://www.tandfonline.com/doi/full/10.1080/13647830.2020.1800823$$EHTML$$P50$$Ginformaworld$$H</linktohtml><link.rule.ids>230,314,778,782,883,27907,27908,59628,60417</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/1848654$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Dalili, Alireza</creatorcontrib><creatorcontrib>Brunson, Jordan D.</creatorcontrib><creatorcontrib>Guo, Songtao</creatorcontrib><creatorcontrib>Turello, Massimiliano</creatorcontrib><creatorcontrib>Pizzetti, Fabio</creatorcontrib><creatorcontrib>Badiali, Lucia</creatorcontrib><creatorcontrib>Avedisian, Charles T.</creatorcontrib><creatorcontrib>Seshadri, Kalyanasundaram</creatorcontrib><creatorcontrib>Cuoci, Alberto</creatorcontrib><creatorcontrib>Williams, Forman A.</creatorcontrib><creatorcontrib>Frassoldati, Alessio</creatorcontrib><creatorcontrib>Hicks, Michael C.</creatorcontrib><creatorcontrib>Cornell Univ., Ithaca, NY (United States)</creatorcontrib><title>The role of composition in the combustion of n-heptane/iso-butanol mixtures: experiments and detailed modelling</title><title>Combustion theory and modelling</title><description>Experimental data and detailed numerical modelling are presented on the burning characteristics of a model gasoline/biofuel mixture consisting of n-heptane and iso-butanol. A droplet burning in an environment that minimises the influence of buoyant and forced convective flows in the standard atmosphere is used to promote one-dimensional gas transport to facilitate numerical modelling of the droplet burning process. The numerical model includes a detailed combustion kinetic mechanism, unsteady gas and liquid transport, multicomponent diffusion inside the droplet, variable properties, and non-luminous radiative heat transfer from the flame. The numerical simulation was validated by experimental measurements in the standard atmosphere which showed good agreement with the evolutions of droplet and flame diameters. The iso-butanol concentration had a strong effect on formation of particulates. Above ~20% (volume) iso-butanol, flame luminosity was significantly diminished anddecreased with increasing iso-butanol concentration, while CO
2
emissions as a representative greenhouse gas were not strongly influenced by the iso-butanol loading. The soot shell was located near a 1350 K isotherm for concentrations up to 20% (volume) iso-butanol, suggesting this value as a possible soot inception temperature for the mixture droplet. The combustion rate decreased with increasing iso-butanol concentration which was attributed to iso-butanol's higher liquid density. No evidence of a low temperature burning regime, or of extinction, was found (in experiments and simulations) for the small droplet sizes investigated.</description><subject>Atmospheric models</subject><subject>biofuel</subject><subject>Biofuels</subject><subject>Butanol</subject><subject>Combustion</subject><subject>Convective flow</subject><subject>Diameters</subject><subject>droplet</subject><subject>droplet combustion</subject><subject>Droplets</subject><subject>Energy & Fuels</subject><subject>Engineering</subject><subject>Gas transport</subject><subject>Gasoline</subject><subject>Greenhouse effect</subject><subject>Greenhouse gases</subject><subject>Heptanes</subject><subject>iso-butanol</subject><subject>Low temperature</subject><subject>Luminosity</subject><subject>Mathematical models</subject><subject>Mathematics</subject><subject>n-heptane</subject><subject>Numerical models</subject><subject>Particulates</subject><subject>Radiative heat transfer</subject><subject>Soot</subject><subject>surrogate</subject><subject>Thermodynamics</subject><issn>1364-7830</issn><issn>1741-3559</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kUtP3TAQhaMKpPLoT6hktevA-JHE6aoI8ZKQ2MDa8rXHvUaJndqOgH9f317YsprRmW9GZ3Sa5juFMwoSzinvxSA5nDFgVZIAkvEvzREdBG15140Hta9Mu4O-Nsc5PwMAG5g4auLjFkmKE5LoiInzErMvPgbiAyl1VKXNmv8rFQjtFpeiA577HNvNWts4kdm_ljVh_kXwdcHkZwwlEx0ssVi0n9CSOVqcJh_-nDaHTk8Zv73Xk-bp-urx8ra9f7i5u7y4bw3vu9IahnZjjYDRUjeilCg7blgPnROMU-Ys39jBWJQ90-MAQgtnezv2GunIBuQnzY_93VjNq2x8QbM1MQQ0RVEpZN-JCv3cQ0uKf1fMRT3HNYXqSzHR05HDAFCpbk-ZFHNO6NRSf9TpTVFQuwDURwBqF4B6D6Du_d7v-eBimvVLTJNVRb9NMbmkg_FZ8c9P_APqvI32</recordid><startdate>20201101</startdate><enddate>20201101</enddate><creator>Dalili, Alireza</creator><creator>Brunson, Jordan D.</creator><creator>Guo, Songtao</creator><creator>Turello, Massimiliano</creator><creator>Pizzetti, Fabio</creator><creator>Badiali, Lucia</creator><creator>Avedisian, Charles T.</creator><creator>Seshadri, Kalyanasundaram</creator><creator>Cuoci, Alberto</creator><creator>Williams, Forman A.</creator><creator>Frassoldati, Alessio</creator><creator>Hicks, Michael C.</creator><general>Taylor & Francis</general><general>Taylor & Francis Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20201101</creationdate><title>The role of composition in the combustion of n-heptane/iso-butanol mixtures: experiments and detailed modelling</title><author>Dalili, Alireza ; Brunson, Jordan D. ; Guo, Songtao ; Turello, Massimiliano ; Pizzetti, Fabio ; Badiali, Lucia ; Avedisian, Charles T. ; Seshadri, Kalyanasundaram ; Cuoci, Alberto ; Williams, Forman A. ; Frassoldati, Alessio ; Hicks, Michael C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c365t-c2edbdc409d1f9e88e853c2605f42312fd3bd7cde862a9704a4fd6d96ae1927e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Atmospheric models</topic><topic>biofuel</topic><topic>Biofuels</topic><topic>Butanol</topic><topic>Combustion</topic><topic>Convective flow</topic><topic>Diameters</topic><topic>droplet</topic><topic>droplet combustion</topic><topic>Droplets</topic><topic>Energy & Fuels</topic><topic>Engineering</topic><topic>Gas transport</topic><topic>Gasoline</topic><topic>Greenhouse effect</topic><topic>Greenhouse gases</topic><topic>Heptanes</topic><topic>iso-butanol</topic><topic>Low temperature</topic><topic>Luminosity</topic><topic>Mathematical models</topic><topic>Mathematics</topic><topic>n-heptane</topic><topic>Numerical models</topic><topic>Particulates</topic><topic>Radiative heat transfer</topic><topic>Soot</topic><topic>surrogate</topic><topic>Thermodynamics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dalili, Alireza</creatorcontrib><creatorcontrib>Brunson, Jordan D.</creatorcontrib><creatorcontrib>Guo, Songtao</creatorcontrib><creatorcontrib>Turello, Massimiliano</creatorcontrib><creatorcontrib>Pizzetti, Fabio</creatorcontrib><creatorcontrib>Badiali, Lucia</creatorcontrib><creatorcontrib>Avedisian, Charles T.</creatorcontrib><creatorcontrib>Seshadri, Kalyanasundaram</creatorcontrib><creatorcontrib>Cuoci, Alberto</creatorcontrib><creatorcontrib>Williams, Forman A.</creatorcontrib><creatorcontrib>Frassoldati, Alessio</creatorcontrib><creatorcontrib>Hicks, Michael C.</creatorcontrib><creatorcontrib>Cornell Univ., Ithaca, NY (United States)</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Combustion theory and modelling</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dalili, Alireza</au><au>Brunson, Jordan D.</au><au>Guo, Songtao</au><au>Turello, Massimiliano</au><au>Pizzetti, Fabio</au><au>Badiali, Lucia</au><au>Avedisian, Charles T.</au><au>Seshadri, Kalyanasundaram</au><au>Cuoci, Alberto</au><au>Williams, Forman A.</au><au>Frassoldati, Alessio</au><au>Hicks, Michael C.</au><aucorp>Cornell Univ., Ithaca, NY (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The role of composition in the combustion of n-heptane/iso-butanol mixtures: experiments and detailed modelling</atitle><jtitle>Combustion theory and modelling</jtitle><date>2020-11-01</date><risdate>2020</risdate><volume>24</volume><issue>6</issue><spage>1002</spage><epage>1020</epage><pages>1002-1020</pages><issn>1364-7830</issn><eissn>1741-3559</eissn><abstract>Experimental data and detailed numerical modelling are presented on the burning characteristics of a model gasoline/biofuel mixture consisting of n-heptane and iso-butanol. A droplet burning in an environment that minimises the influence of buoyant and forced convective flows in the standard atmosphere is used to promote one-dimensional gas transport to facilitate numerical modelling of the droplet burning process. The numerical model includes a detailed combustion kinetic mechanism, unsteady gas and liquid transport, multicomponent diffusion inside the droplet, variable properties, and non-luminous radiative heat transfer from the flame. The numerical simulation was validated by experimental measurements in the standard atmosphere which showed good agreement with the evolutions of droplet and flame diameters. The iso-butanol concentration had a strong effect on formation of particulates. Above ~20% (volume) iso-butanol, flame luminosity was significantly diminished anddecreased with increasing iso-butanol concentration, while CO
2
emissions as a representative greenhouse gas were not strongly influenced by the iso-butanol loading. The soot shell was located near a 1350 K isotherm for concentrations up to 20% (volume) iso-butanol, suggesting this value as a possible soot inception temperature for the mixture droplet. The combustion rate decreased with increasing iso-butanol concentration which was attributed to iso-butanol's higher liquid density. No evidence of a low temperature burning regime, or of extinction, was found (in experiments and simulations) for the small droplet sizes investigated.</abstract><cop>Abingdon</cop><pub>Taylor & Francis</pub><doi>10.1080/13647830.2020.1800823</doi><tpages>19</tpages></addata></record> |
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| ispartof | Combustion theory and modelling, 2020-11, Vol.24 (6), p.1002-1020 |
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| source | Taylor & Francis Journals Complete |
| subjects | Atmospheric models biofuel Biofuels Butanol Combustion Convective flow Diameters droplet droplet combustion Droplets Energy & Fuels Engineering Gas transport Gasoline Greenhouse effect Greenhouse gases Heptanes iso-butanol Low temperature Luminosity Mathematical models Mathematics n-heptane Numerical models Particulates Radiative heat transfer Soot surrogate Thermodynamics |
| title | The role of composition in the combustion of n-heptane/iso-butanol mixtures: experiments and detailed modelling |
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