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Turbulent burning velocity of ammonia/oxygen/nitrogen premixed flame in O₂-enriched air condition
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| Title: | Turbulent burning velocity of ammonia/oxygen/nitrogen premixed flame in O₂-enriched air condition |
| Authors: | Xia, Yu Browse this author | | Hashimoto, Genya Browse this author | | Hadi, Khalid Browse this author | | Hashimoto, Nozomu Browse this author →KAKEN DB | | Hayakawa, Akihiro Browse this author →KAKEN DB | | Kobayashi, Hideaki Browse this author →KAKEN DB | | Fujita, Osamu Browse this author →KAKEN DB |
| Keywords: | Premixed ammonia/oxygen/nitrogen flame | | Turbulent burning velocity | | Laminar burning velocity | | O₂-enriched combustion |
| Issue Date: | 15-May-2020 |
| Publisher: | Elsevier |
| Journal Title: | Fuel |
| Volume: | 268 |
| Start Page: | 117383 |
| Publisher DOI: | 10.1016/j.fuel.2020.117383 |
| Abstract: | Ammonia is a promising hydrogen-energy carrier as well as a carbon-free fuel. However, turbulent burning behavior of ammonia flame had yet to be sufficiently studied. In this work, laminar and turbulent burning velocities of ammonia/oxygen/nitrogen flames were investigated under the condition of oxygen enrichment. The turbulent burning velocity of ammonia/oxygen/nitrogen mixtures was found to increase with increasing turbulence intensity. The ratio of the turbulent burning velocity to stretched laminar burning velocity, Utr/UN, increased with the turbulence Karlovitz number. However, because of the diffusional–thermal instability effect, given the same turbulent Karlovitz numbers, Utr/UN in ammonia-lean cases is larger than in ammonia-rich cases. These findings indicate that consideration of the effects of diffusional–thermal instability and of the turbulence is important for the prediction of turbulent flame propagation velocity in ammonia combustion fields. |
| Rights: | © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/85293 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 橋本 望
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