Modes of reaction front propagation and end-gas combustion of hydrogen/air mixtures in a closed chamber

Handle URI:
http://hdl.handle.net/10754/622791
Title:
Modes of reaction front propagation and end-gas combustion of hydrogen/air mixtures in a closed chamber
Authors:
Shi, Xian; Ryu, Je Ir; Chen, Jyh-Yuan; Dibble, Robert W. ( 0000-0002-4002-9356 )
Abstract:
Modes of reaction front propagation and end-gas combustion of hydrogen/air mixtures in a closed chamber are numerically investigated using an 1-D unsteady, shock-capturing, compressible and reacting flow solver. Different combinations of reaction front propagation and end-gas combustion modes are observed, i.e., 1) deflagration without end-gas combustion, 2) deflagration to end-gas autoignition, 3) deflagration to end-gas detonation, 4) developing or developed detonation, occurring in the sequence of increasing initial temperatures. Effects of ignition location and chamber size are evaluated: the asymmetric ignition is found to promote the reactivity of unburnt mixture compared to ignitions at center/wall, due to additional heating from asymmetric pressure waves. End-gas combustion occurs earlier in smaller chambers, where end-gas temperature rise due to compression heating from the deflagration is faster. According to the ξ−ε regime diagram based on Zeldovich theory, modes of reaction front propagation are primarily determined by reactivity gradients introduced by initial ignition, while modes of end-gas combustion are influenced by the total amount of unburnt mixture at the time when autoignition occurs. A transient reactivity gradient method is provided and able to capture the occurrence of detonation.
KAUST Department:
Clean Combustion Research Center
Citation:
Shi X, Ryu JI, Chen J-Y, Dibble RW (2017) Modes of reaction front propagation and end-gas combustion of hydrogen/air mixtures in a closed chamber. International Journal of Hydrogen Energy. Available: http://dx.doi.org/10.1016/j.ijhydene.2016.12.095.
Publisher:
Elsevier BV
Journal:
International Journal of Hydrogen Energy
Issue Date:
5-Jan-2017
DOI:
10.1016/j.ijhydene.2016.12.095
Type:
Article
ISSN:
0360-3199
Sponsors:
The authors thank Professor Zheng Chen at Peking University for providing ASURF source code. This work at the University of California, Berkeley was supported by the National Science Foundation and U.S. Department of Energy under award CBET-1258653. This work at King Abdullah University of Science and Technology was supported by Clean Combustion Research Center (CCRC) FUELCOM project.
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0360319916336412
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorShi, Xianen
dc.contributor.authorRyu, Je Iren
dc.contributor.authorChen, Jyh-Yuanen
dc.contributor.authorDibble, Robert W.en
dc.date.accessioned2017-01-29T13:51:39Z-
dc.date.available2017-01-29T13:51:39Z-
dc.date.issued2017-01-05en
dc.identifier.citationShi X, Ryu JI, Chen J-Y, Dibble RW (2017) Modes of reaction front propagation and end-gas combustion of hydrogen/air mixtures in a closed chamber. International Journal of Hydrogen Energy. Available: http://dx.doi.org/10.1016/j.ijhydene.2016.12.095.en
dc.identifier.issn0360-3199en
dc.identifier.doi10.1016/j.ijhydene.2016.12.095en
dc.identifier.urihttp://hdl.handle.net/10754/622791-
dc.description.abstractModes of reaction front propagation and end-gas combustion of hydrogen/air mixtures in a closed chamber are numerically investigated using an 1-D unsteady, shock-capturing, compressible and reacting flow solver. Different combinations of reaction front propagation and end-gas combustion modes are observed, i.e., 1) deflagration without end-gas combustion, 2) deflagration to end-gas autoignition, 3) deflagration to end-gas detonation, 4) developing or developed detonation, occurring in the sequence of increasing initial temperatures. Effects of ignition location and chamber size are evaluated: the asymmetric ignition is found to promote the reactivity of unburnt mixture compared to ignitions at center/wall, due to additional heating from asymmetric pressure waves. End-gas combustion occurs earlier in smaller chambers, where end-gas temperature rise due to compression heating from the deflagration is faster. According to the ξ−ε regime diagram based on Zeldovich theory, modes of reaction front propagation are primarily determined by reactivity gradients introduced by initial ignition, while modes of end-gas combustion are influenced by the total amount of unburnt mixture at the time when autoignition occurs. A transient reactivity gradient method is provided and able to capture the occurrence of detonation.en
dc.description.sponsorshipThe authors thank Professor Zheng Chen at Peking University for providing ASURF source code. This work at the University of California, Berkeley was supported by the National Science Foundation and U.S. Department of Energy under award CBET-1258653. This work at King Abdullah University of Science and Technology was supported by Clean Combustion Research Center (CCRC) FUELCOM project.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0360319916336412en
dc.subjectReaction front propagationen
dc.subjectEnd-gas combustionen
dc.subjectFlame-pressure-autoignition interactionen
dc.subjectDeflagration to detonation transitionen
dc.subjectDetonation developmenten
dc.titleModes of reaction front propagation and end-gas combustion of hydrogen/air mixtures in a closed chamberen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalInternational Journal of Hydrogen Energyen
dc.contributor.institutionDepartment of Mechanical Engineering, University of California – Berkeley, Berkeley, CA 94720, USAen
kaust.authorDibble, Robert W.en
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