Dynamic-Stability Characteristics of Premixed Methane Oxy-Combustion
This work explores the dynamic stability characteristics of premixed CH[subscript 4]/O[subscript 2]/CO[subscript 2] mixtures in a 50kW swirl stabilized combustor. In all cases, the methane-oxygen mixture is stoichiometric, with different fractions of carbon dioxide used to control the flame temperat...
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| Format: | Article |
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ASME International
2018
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| Online Access: | http://hdl.handle.net/1721.1/119264 https://orcid.org/0000-0002-0481-7945 https://orcid.org/0000-0001-8730-272X |
| _version_ | 1826190401709539328 |
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| author | Shroll, Andrew P Shanbhogue, Santosh Ghoniem, Ahmed F |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Shroll, Andrew P Shanbhogue, Santosh Ghoniem, Ahmed F |
| author_sort | Shroll, Andrew P |
| collection | MIT |
| description | This work explores the dynamic stability characteristics of premixed CH[subscript 4]/O[subscript 2]/CO[subscript 2] mixtures in a 50kW swirl stabilized combustor. In all cases, the methane-oxygen mixture is stoichiometric, with different fractions of carbon dioxide used to control the flame temperature (Tad). For the highest Tad's, the combustor is unstable at the five-quarter wave mode. As the temperature is reduced, the combustor jumps to the three quarter mode and then to the quarter wave before eventually reaching blowoff. Similar to the case of CH[subscript 4]/air mixtures, the transition from one mode to another is predominantly a function of the T ad of the reactive mixture, despite significant differences in laminar burning velocity and/or strained flame consumption speed between air and oxy-fuel mixtures for a given Tad. High speed images support this finding by revealing similar vortex breakdown modes and thus similar turbulent flame geometries that change as a function of flame temperature. Topics: Combustion , Dynamic stability , Methane |
| first_indexed | 2024-09-23T08:39:42Z |
| format | Article |
| id | mit-1721.1/119264 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T08:39:42Z |
| publishDate | 2018 |
| publisher | ASME International |
| record_format | dspace |
| spelling | mit-1721.1/1192642022-09-30T10:21:46Z Dynamic-Stability Characteristics of Premixed Methane Oxy-Combustion Shroll, Andrew P Shanbhogue, Santosh Ghoniem, Ahmed F Massachusetts Institute of Technology. Department of Mechanical Engineering Shroll, Andrew P Shanbhogue, Santosh Ghoniem, Ahmed F This work explores the dynamic stability characteristics of premixed CH[subscript 4]/O[subscript 2]/CO[subscript 2] mixtures in a 50kW swirl stabilized combustor. In all cases, the methane-oxygen mixture is stoichiometric, with different fractions of carbon dioxide used to control the flame temperature (Tad). For the highest Tad's, the combustor is unstable at the five-quarter wave mode. As the temperature is reduced, the combustor jumps to the three quarter mode and then to the quarter wave before eventually reaching blowoff. Similar to the case of CH[subscript 4]/air mixtures, the transition from one mode to another is predominantly a function of the T ad of the reactive mixture, despite significant differences in laminar burning velocity and/or strained flame consumption speed between air and oxy-fuel mixtures for a given Tad. High speed images support this finding by revealing similar vortex breakdown modes and thus similar turbulent flame geometries that change as a function of flame temperature. Topics: Combustion , Dynamic stability , Methane King Abdullah University of Science and Technology (Grant KSU-I1-010-01) 2018-11-27T15:31:05Z 2018-11-27T15:31:05Z 2011-06 2018-11-20T17:22:14Z Article http://purl.org/eprint/type/ConferencePaper 978-0-7918-5462-4 http://hdl.handle.net/1721.1/119264 Shroll, Andrew P., et al. “Dynamic-Stability Characteristics of Premixed Methane Oxy-Combustion.” Proceedings of ASME Turbo Expo 2011, 6-10 June, 2011, Vancouver, British Columbia, Canada, ASME, 2011, pp. 681–93. © 2011 by ASME https://orcid.org/0000-0002-0481-7945 https://orcid.org/0000-0001-8730-272X http://dx.doi.org/10.1115/GT2011-45753 Proceedings of ASME Turbo Expo 2011 Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf ASME International |
| spellingShingle | Shroll, Andrew P Shanbhogue, Santosh Ghoniem, Ahmed F Dynamic-Stability Characteristics of Premixed Methane Oxy-Combustion |
| title | Dynamic-Stability Characteristics of Premixed Methane Oxy-Combustion |
| title_full | Dynamic-Stability Characteristics of Premixed Methane Oxy-Combustion |
| title_fullStr | Dynamic-Stability Characteristics of Premixed Methane Oxy-Combustion |
| title_full_unstemmed | Dynamic-Stability Characteristics of Premixed Methane Oxy-Combustion |
| title_short | Dynamic-Stability Characteristics of Premixed Methane Oxy-Combustion |
| title_sort | dynamic stability characteristics of premixed methane oxy combustion |
| url | http://hdl.handle.net/1721.1/119264 https://orcid.org/0000-0002-0481-7945 https://orcid.org/0000-0001-8730-272X |
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