An experimental study to assess the impact of discharge frequency of the dielectric barrier discharge on ignition process of premixed mixture under elevated pressure
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- 形態
- 価格
- 一般価格(税込)：￥1,100 会員価格(税込)：￥880
- 文献番号
- 20239264
- 文献・情報種別
- その他の国際会議
- 掲載ページ
- 1-11(Total 11 p)
- 発行年月
- 2023年 8月
- 出版社
- (公社)自動車技術会 & SAE
- 言語
- 英語
- イベント
- 2023 P, E&L
書誌事項
| カテゴリ（英） | IC3 Fundamentals of Mixture Formation and Combustion 翻訳 |
|---|---|
| 著者（英） | 1) Saurabh AGRAWAL, 2) Shuya YAMAMOTO, 3) Naoto HORIBE, 4) Jun HAYASHI, 5) Hiroshi KAWANABE |
| 勤務先（英） | 1) Kyoto University, 2) Kyoto University, 3) Kyoto University, 4) Kyoto University, 5) Kyoto University |
| 抄録（英） | Dielectric Barrier Discharge (DBD) plasma coupled with repeating pulse discharge holds huge potential in LTP igniters owing to its capability to create volumetric discharge and prevent streamer-to-arc transition. When igniting a high pressure premixed mixture with a dielectric barrier discharge (DBD) ignition system, it is essential to understand the flame kernel formation and development process. In this research, a DBD igniter with multiple ground electrodes was applied to achieve volumetric ignition. The influence of discharge frequency and total duration of the DBD on the ignition process was experimentally evaluated using high-speed imaging. The discharge frequency of the DBD considered in this study are 40, 100 and 300 kHz. High-speed imaging was performed in a constant volume vessel for DBD in air to understand the energy released during the discharge process. Methane-air premixed mixture were ignited in a constant volume combustion chamber. Additionally, the flame kernel formation and development process were visualized using OH* chemiluminescence. Results showed that the energy of DBD released during a single discharge cycle decreases, but the power of the discharges increases as the frequency increased. The ignition probability increased and the time for the flame propagation decreased under high frequency because the increased power of the discharges efficiently rises the local gas temperature near the electrodes and promotes the production of radicals. 翻訳 |
