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| ファイル | 記述 | サイズ | フォーマット | |
|---|---|---|---|---|
| 5.0166412.pdf | 7.05 MB | Adobe PDF | 見る/開く |
| タイトル: | Large-eddy simulation of a lean-premixed hydrogen flame in a low-swirl combustor under combustion instability |
| 著者: | Nagao, Jun Pillai, Lakshman, Abhishek Shoji, Takeshi Tachibana, Shigeru Yokomori, Takeshi Kurose, Ryoichi    https://orcid.org/0000-0003-0377-6480 (unconfirmed) |
| 著者名の別形: | 長尾, 順 庄司, 烈 立花, 繁 横森, 剛 黒瀬, 良一 |
| キーワード: | Thermoacoustics Ideal gas Chemical elements Combustion Fluid flows Fluid jets Flow dynamics Turbulent flows Vortex dynamics Supercomputer |
| 発行日: | Oct-2023 |
| 出版者: | AIP Publishing |
| 誌名: | Physics of Fluids |
| 巻: | 35 |
| 号: | 10 |
| 論文番号: | 105124 |
| 抄録: | Large-eddy simulation (LES) of a lean-premixed hydrogen turbulent jet flame with combustion instability (CI) in a low-swirl combustor (LSC) is performed by employing a dynamically thickened flame model with a detailed chemical reaction model with 9 chemical species and 20 reactions, and the LES validity and the CI characteristics are investigated in detail. The results show that the present LES can accurately reproduce the experimentally observed characteristics of the CI such as intensity, frequency, sporadic decay of pressure oscillations, and a flame–flow interaction inducing the periodic transitions of an inverted conical flame structure and a flat flame structure in the LSC. The sporadic decay of pressure oscillations and the flame–flow interaction are caused by the temporal decoupling of pressure and heat release rate and the periodic outward and inward deflections of the inflow, which is associated with the flow behavior in the upstream injector channel, respectively. |
| 著作権等: | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in (Jun Nagao, Abhishek Lakshman Pillai, Takeshi Shoji, Shigeru Tachibana, Takeshi Yokomori, Ryoichi Kurose; Large-eddy simulation of a lean-premixed hydrogen flame in a low-swirl combustor under combustion instability. Physics of Fluids 1 October 2023; 35 (10): 105124.) and may be found at https://doi.org/10.1063/5.0166412. The full-text file will be made open to the public on OCTOBER 11 2024 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. |
| URI: | http://hdl.handle.net/2433/285749 |
| DOI(出版社版): | 10.1063/5.0166412 |
| 出現コレクション: | 学術雑誌掲載論文等 |
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