| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2024-12-06 |
| タイトル |
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|
タイトル |
Flame acceleration and detonation initiation around a T-shaped bifurcation |
|
言語 |
en |
| 作成者 |
Honda, Tomoaki
Ogawa, Syotaro
Kida, Yusuke
Kim, Wookyung
Johzaki, Tomoyuki
Yatsufusa, Tomoaki
Endo, Takuma
|
| アクセス権 |
|
|
アクセス権 |
embargoed access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_f1cf |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
© 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
This is not the published version. Please cite only the published version. |
| 権利情報 |
|
|
言語 |
ja |
|
権利情報 |
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。 |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Flame acceleration |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Detonation |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Deflagration-to-detonation transition |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
T-shaped bifurcation |
| 内容記述 |
|
|
内容記述 |
We experimentally studied the flame behavior of H2–O2–N2 premixed gas around a T-shaped bifurcation in a piping system with an inner diameter of 20 mm. In the experiments, we measured the flame speed as a function of the path length from the igniting spark plug using ion probes and observed self-emission images using a high-speed camera. The speed and disturbance of the flame entering the bifurcation were varied by installing various numbers of obstacle rods into the pipe just downstream of the igniting spark plug. We compared the effects of the bifurcation on the flame propagation between two cases: the flame propagating straight through the T-shaped bifurcation and the flame turning 90° at the T-shaped bifurcation. In both cases, the flame was accelerated around the T-shaped bifurcation. Especially, in the case of the flame turning 90° at the T-shaped bifurcation, the flame acceleration was remarkable and, in some cases, a detonation was initiated immediately downstream of the T-shaped bifurcation. The observed remarkable flame acceleration is considered to be ascribed to the recirculation region formed by the separation of the unburned-gas flow downstream of the T-shaped bifurcation, and governed by the ratio between the ignition delay time of the mixture of the burned and unburned gases and the sound-crossing time for the pipe diameter which is the only length scale of a long pipe. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Elsevier |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
|
|
関連タイプ |
isVersionOf |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1016/j.jlp.2024.105280 |
| 助成情報 |
|
|
|
助成機関名 |
日本学術振興会 |
|
|
言語 |
ja |
|
|
研究課題番号URI |
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20H02352/ |
|
|
研究課題番号 |
20H02352 |
|
|
研究課題名 |
助走距離の短縮と伝播の高速化によるパルスデトネーション技術の高度化 |
|
|
言語 |
ja |
| 助成情報 |
|
|
|
助成機関名 |
Japan Society for the Promotion of Science |
|
|
言語 |
en |
|
|
研究課題名 |
Improvement of the pulse-detonation technology by shortening of the run-up distance and speeding up of the propagation |
|
|
言語 |
en |
| 開始ページ |
|
|
開始ページ |
105280 |
| 書誌情報 |
en : Journal of Loss Prevention in the Process Industries
巻 89,
p. 105280,
発行日 2024-03-07
|
| 旧ID |
55830 |
| 備考 |
The full-text file will be made open to the public on 07 March 2026 in accordance with publisher's 'Terms and Conditions for Self-Archiving' |
JLPPI_89_105280.pdf (4.1 MB)
