Effect of Soret diffusion on lean hydrogen/air flames at normal and elevated pressure and temperature

Handle URI:
http://hdl.handle.net/10754/623261
Title:
Effect of Soret diffusion on lean hydrogen/air flames at normal and elevated pressure and temperature
Authors:
Zhou, Zhen; Hernandez Perez, Francisco; Shoshin, Yuriy; van Oijen, Jeroen A.; de Goey, Laurentius P.H.
Abstract:
The influence of Soret diffusion on lean premixed flames propagating in hydrogen/air mixtures is numerically investigated with a detailed chemical and transport models at normal and elevated pressure and temperature. The Soret diffusion influence on the one-dimensional (1D) flame mass burning rate and two-dimensional (2D) flame propagating characteristics is analysed, revealing a strong dependency on flame stretch rate, pressure and temperature. For 1D flames, at normal pressure and temperature, with an increase of Karlovitz number from 0 to 0.4, the mass burning rate is first reduced and then enhanced by Soret diffusion of H2 while it is reduced by Soret diffusion of H. The influence of Soret diffusion of H2 is enhanced by pressure and reduced by temperature. On the contrary, the influence of Soret diffusion of H is reduced by pressure and enhanced by temperature. For 2D flames, at normal pressure and temperature, during the early phase of flame evolution, flames with Soret diffusion display more curved flame cells. Pressure enhances this effect, while temperature reduces it. The influence of Soret diffusion of H2 on the global consumption speed is enhanced at elevated pressure. The influence of Soret diffusion of H on the global consumption speed is enhanced at elevated temperature. The flame evolution is more affected by Soret diffusion in the early phase of propagation than in the long run due to the local enrichment of H2 caused by flame curvature effects. The present study provides new insights into the Soret diffusion effect on the characteristics of lean hydrogen/air flames at conditions that are relevant to practical applications, e.g. gas engines and turbines.
KAUST Department:
Clean Combustion Research Center
Citation:
Zhou Z, Hernández-Pérez FE, Shoshin Y, van Oijen JA, de Goey LPH (2017) Effect of Soret diffusion on lean hydrogen/air flames at normal and elevated pressure and temperature. Combustion Theory and Modelling: 1–18. Available: http://dx.doi.org/10.1080/13647830.2017.1311028.
Publisher:
Informa UK Limited
Journal:
Combustion Theory and Modelling
Issue Date:
12-Apr-2017
DOI:
10.1080/13647830.2017.1311028
Type:
Article
ISSN:
1364-7830; 1741-3559
Sponsors:
The authors thank Professor Clinton Groth for providing access to the Computational Framework for Fluids and Combustion (CFFC) code. The financial support is gratefully acknowledged of the Dutch Technology Foundation (STW) [Project 13549].
Additional Links:
http://www.tandfonline.com/action/showCopyRight?scroll=top&doi=10.1080%2F13647830.2017.1311028
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorZhou, Zhenen
dc.contributor.authorHernandez Perez, Franciscoen
dc.contributor.authorShoshin, Yuriyen
dc.contributor.authorvan Oijen, Jeroen A.en
dc.contributor.authorde Goey, Laurentius P.H.en
dc.date.accessioned2017-04-20T08:08:16Z-
dc.date.available2017-04-20T08:08:16Z-
dc.date.issued2017-04-12en
dc.identifier.citationZhou Z, Hernández-Pérez FE, Shoshin Y, van Oijen JA, de Goey LPH (2017) Effect of Soret diffusion on lean hydrogen/air flames at normal and elevated pressure and temperature. Combustion Theory and Modelling: 1–18. Available: http://dx.doi.org/10.1080/13647830.2017.1311028.en
dc.identifier.issn1364-7830en
dc.identifier.issn1741-3559en
dc.identifier.doi10.1080/13647830.2017.1311028en
dc.identifier.urihttp://hdl.handle.net/10754/623261-
dc.description.abstractThe influence of Soret diffusion on lean premixed flames propagating in hydrogen/air mixtures is numerically investigated with a detailed chemical and transport models at normal and elevated pressure and temperature. The Soret diffusion influence on the one-dimensional (1D) flame mass burning rate and two-dimensional (2D) flame propagating characteristics is analysed, revealing a strong dependency on flame stretch rate, pressure and temperature. For 1D flames, at normal pressure and temperature, with an increase of Karlovitz number from 0 to 0.4, the mass burning rate is first reduced and then enhanced by Soret diffusion of H2 while it is reduced by Soret diffusion of H. The influence of Soret diffusion of H2 is enhanced by pressure and reduced by temperature. On the contrary, the influence of Soret diffusion of H is reduced by pressure and enhanced by temperature. For 2D flames, at normal pressure and temperature, during the early phase of flame evolution, flames with Soret diffusion display more curved flame cells. Pressure enhances this effect, while temperature reduces it. The influence of Soret diffusion of H2 on the global consumption speed is enhanced at elevated pressure. The influence of Soret diffusion of H on the global consumption speed is enhanced at elevated temperature. The flame evolution is more affected by Soret diffusion in the early phase of propagation than in the long run due to the local enrichment of H2 caused by flame curvature effects. The present study provides new insights into the Soret diffusion effect on the characteristics of lean hydrogen/air flames at conditions that are relevant to practical applications, e.g. gas engines and turbines.en
dc.description.sponsorshipThe authors thank Professor Clinton Groth for providing access to the Computational Framework for Fluids and Combustion (CFFC) code. The financial support is gratefully acknowledged of the Dutch Technology Foundation (STW) [Project 13549].en
dc.publisherInforma UK Limiteden
dc.relation.urlhttp://www.tandfonline.com/action/showCopyRight?scroll=top&doi=10.1080%2F13647830.2017.1311028en
dc.rightsThis is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectSoret diffusionen
dc.subjecthydrogen/airen
dc.subjectmass burning rateen
dc.subjectcellular flameen
dc.titleEffect of Soret diffusion on lean hydrogen/air flames at normal and elevated pressure and temperatureen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalCombustion Theory and Modellingen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlandsen
kaust.authorHernandez Perez, Franciscoen
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